截止阀使用说明书(英文版)

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截止阀使用说明书

截止阀使用说明书

截止阀使用说明书第一章:引言1.1 产品概述截止阀是一种常见的管道阀门,用于控制介质的流动,并具有截止流体的功能。

本使用说明书将为您提供有关截止阀的详细信息,包括安装、操作和维护等方面的内容。

1.2 目标用户本使用说明书主要针对进行截止阀的安装、操作和维护的技术人员和用户。

在阅读本文档之前,请确保您具备一定的技术基础和相关知识。

第二章:产品特点2.1 结构特点截止阀主体一般由阀体、阀盖、阀座、阀芯等组件组成。

阀体和阀盖由高强度材料制成,具有良好的耐腐蚀性和密封性能。

阀座和阀芯采用特殊制造工艺,具有耐磨损和耐高温的特点。

2.2 使用特点截止阀具有结构简单、操作方便、结实耐用等特点。

它适用于液体、气体和蒸汽介质的控制,广泛应用于石油、化工、冶金等行业。

第三章:安全须知3.1 安装前须知在安装截止阀之前,请确保以下事项:- 检查截止阀的型号、规格和压力等级是否符合实际需求。

- 确保安装位置符合相关标准,并且设备周围没有任何障碍物。

- 在进行安装之前,请关闭管道系统,并排空管道中的介质。

3.2 安装注意事项- 使用适当的工具进行截止阀的安装,确保安装过程中不会损坏阀门的密封面。

- 安装过程中,请注意调整阀门的开度,确保其处于正常的工作状态。

第四章:使用方法4.1 阀门开启- 旋转手轮,使阀门开度逐渐增大。

- 根据需求,适当调整手轮角度,控制介质的流动量。

4.2 阀门关闭- 顺时针旋转手轮,使阀门逐渐关闭。

- 在完全关闭阀门之后,检查阀门的密封情况,确保没有泄漏。

4.3 注意事项- 在开启或关闭阀门时,请适度用力,不要过度操作,以免损坏阀门和相关设备。

- 定期检查阀门的工作状态,如发现异常情况,请及时进行维修或更换。

第五章:维护保养5.1 维护周期截止阀的维护周期一般为半年或一年一次,具体频率根据使用环境和介质的要求而定。

5.2 维护内容- 定期清洁阀门的外部和内部表面,确保无灰尘和污垢。

- 检查阀门的密封性能,如发现泄漏或磨损现象,请及时处理。

截止阀使用说明书

截止阀使用说明书

截止阀安装使用说明书1 概述截止阀是用来关闭、开启和节流管道介质,截止阀可以完全阻断流体,在阀杆作用力下形成良好密封;Y型截止阀根据阀门的总体设计安装要求确定;截止止回阀在打开状态下可作为控制管道介质单向流动的元件,当介质顺流时由管线自身压力的作用开启阀门,当介质倒流时依靠阀瓣自身重量和介质回流的压力作用在阀瓣背部,使阀瓣与阀座形成密封,达到止回截流的目的。

在10%的开启位置至全开时,采用节流型阀瓣的截止阀对管线的流量调节是有效的。

该类阀门顺时针旋转手轮,阀瓣下降,直到完全将通道切断,阀门关闭。

逆时针旋转手轮,阀瓣上升,直到碰到阻挡,阀门打开。

对于电动装置阀门,在断电等紧急情况下,可以使用备用手轮打开和关闭阀门。

注意!在不超过10%开启状态连续节流会对阀瓣和阀座引起剧烈振动、噪音、磨损和损坏。

2 阀门的储存2.1 发运准备阀门的包装应能防止阀门在运输过程和储存时不发生任何损坏。

并应注意以下几点:1) 包装时,阀瓣应处于关闭状态。

2) 阀门法兰密封面/焊接坡口/螺纹端应涂合适的防护油脂(不锈钢材质除外),阀门两端应可靠地固接木质、木纤维或塑料端盖以防护连接端面和阀门内部。

3) 电动装置阀门包装时须小心地安全固定,以确保电动装置不会损坏并不至于穿破木箱/板条箱。

4) 包装型式应在订单中明确规定,以便安全地运输至目的地和确保安装前的保存。

2.2 吊运要求A. 包装完好的阀门板条箱:用叉车进行装卸。

木箱:在木箱的重心位置处设置装吊点进行装卸。

B. 已开箱的阀门1) 这些阀门的吊运要采取合适的手段和措施如应用货盘进行装卸,注意应避免加工面受到损坏。

2) 对大尺寸阀门,在吊运阀门时可用皮带或链条绕过阀体的颈部吊起,并应保持平衡以防止意外坠落或在吊运过程中松动。

警告!1) 吊运设备(如皮带、链条等)的尺寸须合适,以便足够承受阀门的重量。

2) 吊运须由有资格人员操作。

3) 吊运时应避免通过人员的上空或任何当意外坠落时可能导致损害的区域。

Parker Pneumatic N Series neumatic阀门说明书

Parker Pneumatic N Series neumatic阀门说明书

Material specificationsValve body Cast aluminumPoppet assembly Aluminum and stainless steel Pilot Valve Zinc, stainless steel, brass,copper, zinc plated steel SealsNitrileFeatures• Continuous duty rated option • Non-lube service• Hi-flow, short stroke poppet • Indicator lights available Specifications • 2-way NC• 3-way NO & NC • Selector functionPorts• 3/8" Body – 3/8", 1/2" NPT • 3/4" Body – 1/2", 3/4", 1" NPT• 1-1/4" Body – 1", 1-1/4", 1-1/2" NPT • BSPP “G” threads availableCertification / approval• Approved to be CE marked (Standard L-Pilot & P-Pilot)• NEMA 4 Option• Hazardous Duty Option IP 65 Rating / NEMA 4LubricationThe high speed poppet valves are pre-lubricated to permit use with non-lubricated air. However, air should be lubricated to assure maximum seal life.F442 lubricating oil is recommended. This oil is speciallyformulated to provide peak performance and maximum service life from air-operated equipment.InstallationCAUTION: DO NOT RESTRICT THE INLET TO POPPET VALVESRestriction of the inlet can starve the air supply to the pilot section of internally piloted poppet valves and result in slow shifting or failure of the valve to shift properly. Always connect the supply line directly to the inlet of the valve using the full pipe size of the valve inlet. Never use a quick coupling to connect a poppet valve to the air supply. On valves with a small inlet port, use of an upstream surge tank may be required at lower operating pressures to insure an adequate air supply and proper operation.Parker PneumaticN Series ValvesSingle Solenoid, Locking manual override, internal “P” pilot 140 PSI, standard service, junction box w/ light.Body In / cyl Exhaust 2-way, 2-position 3-way, 2-position 3-way, 2-positionSingle Remote Pilot, 1/4" NPT remote pilot port with internal pilot return.BodyIn / cyl Exhaust 2-way, 2-position3-way, 2-position 3-way, 2-positionSingle Solenoid, Locking manual override, internal “P” pilot 125 PSI, standard service, P-pilot junction box w/ light.Body In / cyl Exhaust2-way, 2-position 3-way, 2-position 3-way, 2-positionSingle Remote Pilot, 1/4" NPT remote pilot port with internal pilot return.Body In / cyl Exhaust 2-way, 2-position 3-way, 2-position 3-way, 2-positionParker PneumaticN Series Valves Model Number Index“N” Series 3/8", 3/4" & 1-1/4" Body Sizes - Solenoid ‘L’ PilotNote: BSPP is to the ISO 228 standard, and requires an R-BSPT male fitting.“N” Series 1-1/4" Body Sizes - Solenoid Hi-Flow ‘P’ PilotR-BSPT male fitting.Parker PneumaticReplacement PilotsDescriptionHazardous duty L-pilot NEMA 4 L-pilot Hazardous duty L-pilot - UL & CSA K0451025**N/AOverride typeLocking Non-Locking Locking Non-Locking Hazardous duty with override K0453025**K0452025**NEMA 4 with overrideK2553025**K255202549** Voltage code - 49 & 53N Series Valve Replacement PartsReplacement PilotsDescription Standard L-pilot Continuous duty L-pilot Override type Locking Non-locking Locking Non-locking Basic with overrideK0653035**K0652035**K0853025**K0852025**JIC with junction box & override K0656035**K0655035**K0856025**K0855025**JIC pilot with junction box &override & indicator lights (120VAC only)K0659035**K0658035**K0859025**K0858025**** Voltage code - (reference model index for availability)Replacement PilotsDescription Heavy duty P-Pilot Override type No override Non-locking Locking Basic with overrideK1351045**N/A N/A JIC with junction box & override N/A K1355045**K1356045**JIC Pilot with junction box & override & indicator lights (120VAC only)N/AK135804553K135904553** Voltage code - 49 & 53Voltage Code **Voltage Coil 60Hz 50Hz DC 19" Leads 72" Leads 4224——K593099—43—24—K593098—45——12K593094—49—— 24K593097—51——48—K59325453115——K593108—58—230—K593111—Coils for L-Pilot Operated ValvesCoils for P-Pilot Operated ValvesVoltage Code **Voltage Coil60Hz 50Hz DC 19" Leads 72" Leads 4012——K593007—41,4224—6K593003—45*——12K593010—49*——24 (Standard)K593014—79——24 (ArcSuppressed)K593271—51*——48—K59318553*120110—K593025—57*240240—K593035—60240220—K593035—61——120K593041—* Indicates voltages approved for solenoid operators designed for use inhazardous locations.NVoltage Code* *Internal Pilot -3/8" & 3/4" Basic BodyKey 3/8" Body3/4" Body Inch mm Inch mm A 1.5640 2.1354B 1.5038 1.9449C1.8146 1.3434D .5614.5614E 3/8-16UNC 7/16" deep 3/8-16UNC 9/16" deepF 1.7544 2.2557G 1.5038 1.5038H 5.921507.14181J3.1981 3.7595K 1.8847 2.4462N 1.4437 1.7845P 7.361968.58218Q2.31593.0984216891351051A 10AKey 3/8" Valve 3/4" Valve Description4*H14510H13676U-cup (3/8), o-ring (3/4)5K493002K493009Stem6K202001K202002Lower piston assy.7*H14509H13676U-cup (3/8), o-ring (3/4)8H17811H17813Washer (2)9H06326H06332Stop nut (2)10K103035K103053Bottom cap (N.C.)10A K092020K092034Bottom cap assy. (N.O.)11*K183049K183057Gasket 12K473014K473015Spring 13K563015K563017Adapter 14*K41RB72121K41RB72221O-ringKey3/8" Valve 3/4" Valve Description1—1/2" Tap K053075Body (N.C.)3/8" TapK0530223/4" Tap K0530761/2" Tap K0530231" Tap K0532201A—3/4" Tap K053077Body (N.O.)3/8" Tap K0530253/4" Tap K0530781/2" Tap K0530261" Tap K0532182K212001K212002Upper piston assy Top view indicates flow through 3-Way valve with coil de-energized.NOTE: For normal valve operation, override must be in “out” position.Service KitsInclude all parts normally required for in-service maintenance:3/8" Basic valve with standard service L -Pilots .................K352076 3/8" Basic valve with continuous duty L -Pilots .....................K3522763/4" Basic valve with standard service L -Pilots .................K3520773/4" Basic valve with continuous duty L -Pilots .....................K352277Exhaust PressureNormally Closed1351A 10A216891351410Key 3/8" Valve 3/4" Valve Description 4*K41RB72211H13676O-ring 5K493002K493009Stem6K202001K202002Lower piston assy.7*K41RB72210H13676O-ring 8H17811H17813Washer (2)9H06326H06332Stop nut (2)10K103035K103053Bottom cap (N.C.)10A K092020K092034Bottom cap assy. (N.O.)11K473014K473015Spring 12*K183049K183057Gasket 13K563016K563021Adapter 14*K41RB72121K41RB72221O-ringKey 3/8" Valve 3/4" Valve Description1—1/2" Tap K053067Body (N.C.)3/8" TapK0530193/4" Tap K0530691/2" Tap K0531571" Tap K0532211A—3/4" Tap K053065Body (N.O.)3/8" Tap K0530183/4" Tap K0530701/2" Tap K0530641" Tap K0532192K212001K212002Upper piston assy 3*H13648H13728SealNormally ClosedNormally OpenExternal Pilot -3/8" & 3/4" Basic BodyKey3/8" Body 3/4" Body InchmmInchmmA 1.5640 2.1354B 1.5038 1.9449C1.8146 1.3434D .5614.5614E3/8-16UNC 7/16" deep 3/8-16UNC 9/16" deepF 1.7544 2.2557G 1.5038 1.5038H 6.421637.45189J 3.1981 3.7595K 1.8847 2.4462N1.4437 1.7845P 7.862008.89226Q2.31593.0984R4.341105.38137Top view indicates flow through 3-Way valve with coil de-energized.NOTE: For normal valve operation, override must be in “out” position.Service KitsInclude all parts normally required for in-service maintenance:3/8" Basic valve with standard service L -Pilots .................K352076 3/8" Basic valve with continuous duty L -Pilots .....................K3522763/4" Basic valve with standard service L -Pilots .................K3520773/4" Basic valve with continuous duty L -Pilots .....................K352277Exhaust PressureTop view indicates flow through 3-Way valve with coil de-energized.NOTE: For normal valve operation, override must be in “out” position.Service KitsInclude all parts normally required for in-service maintenance:1-1/4" Basic valve with standard service P-Pilots ............K352078Exhaust Pressure5Key 1-1/4" Valve Description 4*H13728Seal 5K493016Stem6K313028Lower piston 7*H13728Seal 8H17817Washer 9H06338Stop nut10K092046Bottom cap (N.C.)10A K103061Bottom cap (N.O.)11*K183058Gasket 12K473016Spring 13K012003Adapter 14*K41RB72143O-ringKey1-1/4" Valve Description11" Tap K053111Body (N.C.)1-1/4" Tap K0531121-1/2" Tap K0531131A1" Tap K053114Body (N.O.)1-1/4" Tap K0531151-1/2" Tap K0531162K313029Upper piston assy 3*H13752O-ringInternal Pilot - 1-1/4" Basic BodyInternal Pilot - 1-1/4" Basic BodyKey 1-14" BodyInch mm A 3.0076B2.2557C 1.3434D 1.1930E 1/2-13 UNC 3/4 DeepF 3.1380G 1.5038H 9.30236J5.34136K 3.4487N2.3159P 11.14283Q4.56116Continuous Duty Pilot - 1-1/4" Basic BodyContinuous Duty Pilot - 1-1/4" Basic BodyKey 1-1/4" BodyInch mmA 3.0076B 2.2557C1.3434D 1.1930E 1/2-13 UNC 3/4 DeepF 3.1380G 1.5038H 9.02229J 5.34136K 3.4487N2.3159P 10.45265Q4.561165Key 1-1/4" Valve Description 4*H13728Seal 5K493016Stem6K313028Lower piston 7*H13728Seal 8H17817Washer 9H06338Stop nut10K092046Bottom cap (N.C.)10A K103061Bottom cap (N.O.)11*K183058Gasket 12K473016Spring 13K012003Adapter 14*K41RB72143O-ringKey1-1/4" Valve Description11" Tap K053111Body (N.C.)1-1/4" Tap K0531121-1/2" Tap K0531131A1" Tap K053114Body (N.O.)1-1/4" Tap K0531151-1/2" Tap K0531162K313029Upper piston assy Normally ClosedTop view indicates flow through 3-Way valve with coil de-energized.NOTE: For normal valve operation, override must be in “out” position.Service KitsInclude all parts normally required for in-service maintenance:1-1/4" Basic valve with continuous duty L -Pilot ...................K352080Exhaust PressureInternal Return - 3/8", 3/4", 1-1/4" Basic BodyKey3/8" Body 3/4" Body 1-1/4" Body Inch mm Inch mm Inch mmH 3.1981 3.7595 5.34136J 1.8848 2.4462 3.4487M 1.4437 1.7845 2.6667N 4.22107 5.311357.19183Q2.31593.09784.56116Key 3/8" Valve 3/4" Valve1-1/4" Valve Description 5K493002K493009K493016Stem6K202001K202002K313028Lower pistonassy.7*H13499H13676H13728Seal 8H17811H17813H17817Washer (2)9H06326H06332H06338Stop nut (2)10K092020K092034K092046Bottom cap(N.C.)10A K103035K103053K103061Bottom cap(N.O.)11*K183049K183057K183058Gasket 12K473014K473015K473016Spring 14*K41RB72121K41RB72221K41RB72143O-ring 21K123018K123021K123024CoverKey 3/8" Valve 3/4" Valve1-1/4" ValveDescription1—1/2" TapK0530751" Tap K053111Body (N.O.)3/8" Tap K0530223/4" Tap K0530761-1/4" Tap K0531121/2" Tap K0530231" Tap K0532201-1/2" Tap K0531131A—1/2" TapK0530771" Tap K053114Body (N.C.)3/8" Tap K0530253/4" Tap K0530781-1/4" Tap K0531151/2" Tap K0530261" Tap K0532181-1/2" Tap K0531162K212001K212002K313029Upper piston assy 3*H13648H13728H13752Seal 4*H14510H13676H13728Seal2152151A 7*10Service KitsInclude all parts normally required for in-service maintenance:3/8" Basic valve ........................K3520733/4" Basic valve .........................K3520741-1/4" Basic valve .....................K352075Normally ClosedTop view indicates flow through 3-Way valve.NOTE: For normal valve operation, override must be in “out” position.Exhaust PressureTop view indicates flow through 3-Way valve.NOTE: For normal valve operation, override must be in “out” position.Exhaust Pressure132151051A 7*Internal Return - 3/8", 3/4", 1-1/4" Basic BodyKey3/8" Body 3/4" Body 1-1/4" Body Inch mm Inch mm Inch mm A 1.5640 2.1354 3.0076B 1.5038 1.9449 2.2557C 1.1329 1.1329 2.3860D .5614.5614 1.1930E 3/8–16UNC 7/16" deep 3/8– 16UNC 9/16" deep 1/2–13UNC 3/4" deep F 1.7544 2.2557 3.1379G 1.5640 2.1354 3.1379H 3.1981 3.7595 5.34136J 1.8848 2.4462 3.4487K 2.3159 3.0978 4.56116L 4.34110 5.381377.31186M5.311356.341617.88200N Left of centerOn center.53 13 1.0025Q1.4437 1.78452.3159Key 3/8" Valve 3/4" Valve1-1/4" Valve Description 5K493002K493009K493016Stem6K202001K202002K313028Lower pistonassy.7*H13499H13676H13728Seal 8H17811H17813H17817Washer (2)9H06326H06332H06338Stop nut (2)10K092020K092034K092046Bottom capassy. (N.C.)10A K103035K103053K103061Bottom cap(N.O.)11*K183049K183057K183058Gasket 12K473014K473015K473016Spring 13K563016K563021K563027Adapter 14*K41RB72121K41RB72221K41RB72143O-ring 21K323027K323027Not used CoverKey3/8" Valve 3/4" Valve 1-1/4" Valve Description11/4" Tap K0530111/2" Tap K0530671" Tap K053143Body (N.O.)—3/4" Tap K0530691-1/4" Tap K0531101/2" TapK0531571" Tap K0532211-1/2" Tap K0531461A 1/4" Tap K0530101/2" Tap K0530651" Tap K053159Body (N.C.)—3/4" Tap K0530701-1/4" Tap K0531441/2" Tap K0530641" Tap K053 2191-1/2" Tap K0531452K212001K212002K313029Upper piston assy 3*H13648H13728H13752Seal 4*H13529H13676H13728SealNormally ClosedService KitsInclude all parts normally required for in-service maintenance:3/8" Basic valve ........................K3520313/4" Basic valve ........................K3520561-1/4" Basic valve .....................K352083Catalog PDN1000-2USParker PneumaticParker Hannifin Corporation Pneumatic Division Richland, Michigan/pneumaticsD88Valve ProductsN Series Valve DimensionsInternal Return -3/8" & 3/4" Basic BodyKey 3/8" Body 3/4" Body 1-1/4" Body Inch mm Inch mm Inch mm A 1.5640 2.1354 3.0076B 1.5038 1.9449 2.2557C 1.1329 1.1329 2.3860D .5614.5614 1.1930E 3/8–16UNC 7/16" deep 3/8–16UNC 9/16" deep 1/2–13UNC 3/4" deep F 1.7544 2.2557 3.1379G 1.5640 2.1354 3.1379H 3.1981 3.7595 5.34136J 1.8848 2.4462 3.4487K .5013.5013.5013L .113.164.256M 1.4437 1.7845 2.6667N 4.22107 5.311357.19183P 4.78121 5.561417.53191Q2.31593.09784.56116Internal Return -3/8" & 3/4" Basic Body3/8" Body 3/4" Body 1-1/4" Body Key Inch mm Inch mm Inch mm A 1.5640 2.1354 3.0076B 1.5038 1.9449 2.2557C 1.1329 1.1329 2.3860D .5614.5614 1.1930E3/8–16UNC 7/16" deep 3/8–16UNC 9/16" deep 1/2–13UNC 3/4" deep F 1.7544 2.2557 3.1379G 1.5640 2.1354 3.1379H 3.1981 3.7595 5.34136J 1.8848 2.4462 3.4487K 2.3159 3.0978 4.56116L 4.34110 5.381377.31186M 5.31135 6.341617.88200N Left of centerOn center.53 13 1.0025Q1.44371.78452.3159Internal Return - 3/8" & 3/4" Basic BodyExternal Return - 3/8" & 3/4" Basic Body1/4 NPT。

EPDT-316a 截止阀 GLV-10 使用说明书

EPDT-316a 截止阀 GLV-10 使用说明书

EPDT-316a截止阀 GLV-10感谢您此次购买耀希达凯产品。

为了您能安全正确地使用购买的产品,请您在使用之前务必阅读本文。

并请将本文书妥善保管,如需其他资料,请向您所购买的经销商或本公司提出。

本书中使用的符号如下。

警 告在发生不当操作时,有可能导致使用者发生死亡或重伤的危险状态。

注 意在发生不当操作时,有可能导致使用者负轻伤或物质损害的危险状态。

1. 规 格型号GLV-10公称直径8~50A适用流体蒸汽、空气、冷温水、油、其他非危险流体最高使用压力 1.4Mpa※1最高使用温度220℃※1接口方式JIS Rc※1 使用压力与使用温度的关系参照JIS B2051 压力-温度标准。

注 意请确认产品所附的标示内容及所订购型号的规格内容。

※如内容有误,不要使用,请向本公司咨询。

2. 保管、安装注 意(1)产品请保管在室内垃圾、尘埃、湿气较少且通风良好的场所中。

(2)安装请由熟练的专业人员在保护好头部、眼睛、手足的前提下实施。

(3)请在确认流体的流动方向和产品上标示的箭头方向后,正确进行安装。

(4)请实施定心,使连接产品的配管与管轴呈一条直线,不要对产品施加过大的配管应力。

(5)搬运、保管产品过程中会因垫片应力缓和导致紧固压力下降,从而从大螺母部发生泄漏。

请务必在使用前对大螺母实施追加紧固。

(6)阀门开关操作不要施加过大力,请在最大扭矩限制下进行。

限制扭矩如日本阀门工业协会发行的 「阀门用户手册」所示。

(7)可能会发生冻结时,请实施防冻措施和使用后的排水处置。

3.在使用时警 告请在流体流动前确认即使流体流动至配管末端也不会导致危险。

※有可能因流体流出导致物质损害。

注 意(1)全开时,为防止阀门手柄被打开至全开状态导致卡紧而不可回转,即使为全开状态,也请将阀门手柄稍往回旋转45度状态使用。

(2)阀请勿使用过大的力于阀门的开关,请在扭矩的规定范围内操作。

扭矩规定范围请参考日本阀门工业会发行的《阀门客户指导手册》。

阀门的安装说明书(中英文)

阀门的安装说明书(中英文)

阀门的安装说明书(中英文对照)焊接与银钎焊SOLDERING AND SILVER BRAZING务必记住所推荐的阀门的用途是什么,并对所应用的环境进行分析,这样才能决定选用最适合安装什么样的阀门。

在安装正确的阀门之前,为了防止损坏阀门,并保证充分发挥阀门的工作性能,请阅读一下安装指南:Analyze the application to determine which valve is best suited for installations, keeping in mind the service for which the valve is recommended. Before installing the correct valve, review the installation instructions to prevent damage to the valve and to assure its maximum efficiency:先沿着垂直方向切割管道,并修整、去除毛刺,测量管径。

Cut tube end square. Ream, burr and size.使用纱布或钢丝刷清除管道和切割部位,使其金属表面发光发亮。

建议不要使用钢丝绒。

Use sand cloth or steel wire brush to clean both ends to a bright metal finish. Steel wool is not recommended.在管道的外面和焊接罩的内部涂上焊剂,焊剂必须完全覆盖焊接表面。

请有节制地使用焊剂。

Apply flux to outside of tube and inside of solder cup. Surfaces to be joined must be completely covered. Use flux sparingly.要确保阀门处于开启状态。

截止阀使用说明书english

截止阀使用说明书english

Operational ManualType of product: Globe valveModel Number: 6”-J41H-150LBZHEJIANG MAILON VALVE CO.,LTD浙江迈隆阀门有限公司Date:1.Main Application:1.1 ApplicationSuch valve is mainly used as open and close device on the industrial pipelines for Petroluem, gas and chemicals.1.2 Range of ApplicationTemperature(℃) Medium Nominal pressure(LB)■ -29~425 ■ without corrosive ■ 150□ -29~595 □with corrosive □ 300□ -46~345 □ others □ 400□ -254~800 □ 600□ others □ 900□ 15002.Applicable standard□ ANSI□ API□ MSS□ BS□ ASTM■ others-(ASME B16.34)4.Main characteristics of design:4.1 valve type:□ angle type ■through way type □ Y-type □ others4.2 end connection:■ flange type □ welded type □ threaded type □ others 4.3 bonnet connection:■flanged □pressure retaining □welded □ others4.4 seat:■ parallel type □wedge type □ others4.5 disc:■ normal type □ balance type □ pilot-operated type □ others 4.6 Operation:■hand □electric □ others4.7 The globe has backseat sealing construction,but should replace packing without pressure.5.Main dimensionn and end connection:7.Installation and usage7.1 installation7.1.1 The installation postion of the valve shall be covenient for operation and maintenance.7.1.2 Before the installation of the valve,the following items must be checked whether they are in accordance with the usage condition:valve model number,performance specification,technical requirement,nameplate and marking,installation direction,etc. Especially the installtion direction must be correct.7.1.3 Before the installation,the dirt and rust in the cavity and on the sealing face shall be removed. 7.1.4 To check whether the bolt of the cover flange and the packing gland are tightened.To check the smoothness of the open and close operation.For valves with actuators,to check the travel position,to ensure the sealing but without overload.7.2Usage7.2.1The valve is for open and close,not suitable for adjusting function.It is not permitted to use it over the temperature and pressure limitation.For high temperature application,the bolts should tightened periodically to prevent it from leaking.Less heat grad is necessary.For low temperature application,the impact overload stress concentration is not permitted.7.2.2 For hand operated valve,the clockwise is close direction,and the anti-clockwise is open direction.For the other operation types,the control device indication for open/close shall be consistent with the open/close direction of the valve.8.Maintenance and storage8.1 Maintenance8.1.1 The valve in operation should be checked and maintained periodically to prevent it from rust and jamming.8.1.2 If leakage pls check whether the middle flange and packing gland is loosed,although there are backseat sealing but should not replace packing with pressure;8.1.3If the internal leakage at the sealing faces is found,pls check whether the valve is fully closed position.8.1.4When due time for maintenance of valve,all parts should be cleaned again to remove the dirt and rust.And also to replace the damaged gasket and sealing rings,to lap and adjust the sealingfaces.After maintenance,pls make new pressure test.If the valve is fixed with safety device,the setpressure of the safety device should be re-set as less than 1.1times of the pressure-temperaturevalue.8.2 Storage8.2.1 The valve should be stored in dired house.Stacked or stored in open air is forbidden.8.2.2 The stored valve should have end covers for protection.The naked position of the stem should be protected by oil paper,preventing from damaing.8.2.3 For long time stored valve,it should be maintained periodically:to clean the dirt and rust,re-coat the anti-rust oil/grease,to check the flexibility of operation with no jamming.。

2007 HE-LO 自动停止阀门用户指南说明书

2007 HE-LO 自动停止阀门用户指南说明书

Shut-off valve HE-LO,to safety standardTechnical dataFunction-M-Flow rate5,200…12,000l/min-Q-Temperature range –10…+60°C-L-Operating pressure 1 (10)bar-H-NoteThe shut-off valve may not be used as an emergency stop valve.For units that require a pneumatic shut-off in order to carry out mainten-ance or repair work,for example.The into the air Function:The valve is used for shutting off the compressed air supply,whilesimultaneously exhausting systems are using The largest exhaust flow rate is achieved by keeping the actuating knob in the actuated position until the connected system is completely exhausted.valve is installed supply line and fulfils requirements set forth by OSHA 29CFR 147,“Controlling Dangerous EnergySources”,issued by the United States Department of Labor.which powered compressed air.Flow from port 1to port 2is blocked when the actuator knob is pressed,and flow from port 2to port 3is opened.The valve can be locked in the closed position using a padlock.This ensures that a decommissioned system (e.g.during maintenance work)cannot be pressurised without authorisation.General technical data TypeHE-G y -LO HE-G ½-LO HE-G ¾-LO HE-G1-LODesignManually actuated 3/2-way valve with piston slide Type of mounting Screwed into piping2through holes in housing with ∅8mm for wall mounting Mounting position Any,but make sure there is easy access to the actuating knob Connection 1,2G y G ½G ¾G1(Female thread)3G1Operating pressure[bar]1 (10)-H-Note:This product conforms with the ISO 1179-1standard and the ISO 228-1standard.Standard nominal flow rate 1)qnN [l/min]Connection G y G ½G ¾G11>25,2006,2008,00010,0002>312,0001)Measured at primary pressure pl =6bar and Δp =1bar.Ambient conditions Ambient temperature [°C]–10…+60Corrosion resistanceCRC 1)31)Corrosion resistance class 3according to Festo standard 940070Components requiring higher corrosion resistance.External visible parts in direct contact with industrial atmospheres or media such as solvents and cleaning agents,with a predominantly functional requirement for the surface.Weights [g]G yG ½G ¾G1HE-…-LO1,1001,000I n d i v i d u a l u n i t s S t a r t -u p a n d e x h a u s t v a l v e s4.4Shut-off valve HE-LO,to safety standard Technical dataType D1HE-G y-LO G yHE-G½-LO G½HE-G¾-LO G¾HE-G1-LO G1-H-Note:This product conforms with the ISO1179-1standard and the ISO228-1standard.Ordering dataConnection Part No.TypeG y197133HE-G y-LOG½197134HE-G½-LOG¾197135HE-G¾-LOG1197136HE-G1-LO IndividualunitsStart-upandexhaustvalves 4.4Shut-off valve HE-LO,to safety standardAccessories Padlock LRVS-Dfor shut-off valve Material:Housing:BrassOrdering dataWeight Part No.Type [g]yp Padlock120193786LRVS-DI n d i v i d u a l u n i t sS t a r t -u p a n d e x h a u s t v a l v e s4.4Solenoid valves MFHE/Pneumatic valves VLHEPeripheralsoverview5AccessoriesMFHEVLHE Page 1Solenoid coil MSFG/MSFW –3/4.4-92Plug socket with cable KMF –3/4.4-93Illuminating seal MF-LD –3/4.4-94Plug socket MSSD-F –3/4.4-95Silencer U3/4.4-9I n d i v i d u a l u n i t s S t a r t -u p a n d e x h a u s t v a l v e s4.4Solenoid valves MFHETechnical dataFunction-M-Flow rate1,200…2,900l/min-Q-Temperature range –10…+60°C-L-Operating pressure2…10bar/28…145psi-W-/en/Spare_parts_serviceSolenoid actuated soft start valve for gradual pressure build-up inpneumatic systems.This ensures safe start-up of pneumatic systems.A minimal amount of air flows into the system via an adjustable flow control valve.Output pressure is built up slowly.Downstream cylinders and slowly output pressure reaches approx.50%of the supply pressure,the valve switches to full flow.•For F solenoid coils –12,24,42V DC–24,42,48,110,230,240V AC (50…60Hz)•On-off valve in combination with service -H-NoteManual override can be detented and secured in the initial position.In the depressed position,the man-ual override is advanced automati-cally to its initial position when the valve is actuated.-H-NoteControl voltage should not be switched to downstream solenoid valves until after pressure has been built up.working devices are advanced to their initial positions.When the units•Manual override,detentingGeneral technical data TypeMFHE-3-¼-BMFHE-3-y MFHE-3-½Pneumatic connection 1,2G ¼G y G ½Pneumatic connection 3G ¼G y G ½Nominal diameter [mm]8912DesignDisk seatType of mounting Via through-holes Mounting position AnyValve function 3/2-way valve,single solenoid,closed Exhaust function Without flow control Reset method Mechanical spring Actuation type DirectDirection of flow Non-reversible Sealing principle Soft Response time on/off[ms]12/8020/9428/76Standard nominal flow rate qnN [l/min]Pneumatic connection G ¼G y G ½In flow direction unthrottled 1,2002,1002,9001>2throttledmax.150max.450max.450In venting direction 2>31,6002,7003,400I n d i v i d u a l u n i t s S t a r t -u p a n d e x h a u s t v a l v e s4.4Solenoid valves MFHETechnical dataOperating and environmental conditions Operating pressure [bar]2...10p g p [psi]28 (145)Operating medium Compressed air,lubricated or unlubricated Ambient temperature [°C]–5…+40Temperature of medium [°C]–10…+60Weights [g]Pneumatic connection G ¼G y G ½Solenoid valve MFHE 5508001,000I n d i v i d u a l u n i t s S t a r t -u p a n d e x h a u s t v a l v e s4.4Solenoid valves MFHETechnical dataType B1B2B3B4B5B6D1∅D2∅E1H1MFHE-3-¼-B 277136.5516.485.0522 5.510G ¼82MFHE-3-y 29.7864315.791.528.2 5.510G y 95MFHE-3-½29.790.745.320.393.830.5 6.511G ½98.2Type H2H3H4H5L1L2L3L4L5L6MFHE-3-¼-B 104013211655.664.31014.347.216.5MFHE-3-y 104714512963.470.11014.356.618.7MFHE-3-½10.146.714813271.6761014.763.722.9Ordering dataPneumatic connection Part No.Type G ¼14329MFHE-3-¼-B G y 12908MFHE-3-y G ½10421MFHE-3-½I n d i v i d u a l u n i t s S t a r t -u p a n d e x h a u s t v a l v e s4.4Pneumatic valves VLHETechnical dataFunction-M-Flow rate1,200…2,900l/min-Q-Temperature range –10…+60°C-L-Operating pressure2…12bar/28…180psi-W-/en/Spare_parts_servicePneumatically actuated soft start valve for gradual pressure build-up inpneumatic systems.This ensures safe start-up of pneumatic systems.A minimal amount of air flows into the system via an adjustable flow control valve.Output pressure is built up slowly.Downstream cylinders andwork devices are slowly advanced to their initial positions.When theoutput pressure reaches approx.50%of the supply pressure,the valve switches to full flow.•On-off valve in combination with service units•Manual override,detenting-H-NoteManual override can be detented and secured in the initial position.In the depressed position,the man-ual override is advanced automati-cally to its initial position when the valve is actuated.General technical data TypeVLHE-3-¼-BVLHE-3-y VLHE-3-½Pneumatic connection 1,2G ¼G y G ½Pneumatic connection 3G ¼G y G ½Pneumatic connection 12(pilot air)G x G x G x Nominal diameter [mm]8912DesignDisk seatType of mounting Via through-holes Mounting position AnyValve function 3/2-way valve,single solenoid,closed Exhaust function With flow control Sealing principle Soft Response time on/off [ms]8/238.5/19.525/39Standard nominal flow rate qnN [l/min]Pneumatic connection G ¼G y G ½In flow direction unthrottled 1,2002,1002,9001>2throttledmax.150max.450max.450In venting direction 2>31,6002,7003,400Operating and environmental conditions Operating pressure [bar]2...12p g p [psi]28 (180)Operating medium Compressed air,lubricated or unlubricated Ambient temperature [°C]–10…+60Temperature of medium [°C]–10…+60Weights [g]Pneumatic connection G ¼G y G ½Pneumatic valve VLHE430790980I n d i v i d u a l u n i t s S t a r t -u p a n d e x h a u s t v a l v e s4.4Pneumatic valves VLHETechnical dataType B1B2B3B4B5B6D1∅D2∅E1VLHE-3-¼-B 277136.516.54022 5.510G ¼VLHE-3-y 29.7864315.748.228 5.510G y VLHE-3-½29.790.745.320.25130.5 6.511G ½Type H1H2H3L1L2L3L4L5L6VLHE-3-¼-B 82104055.664.31014.347.216.5VLHE-3-y 95104763.470.11014.356.618.7VLHE-3-½98.210.146.771.6761014.763.722.9Ordering dataPneumatic connection Part No.Type G ¼14330VLHE-3-¼-B G y 12909VLHE-3-y G ½10420VLHE-3-½I n d i v i d u a l u n i t s S t a r t -u p a n d e x h a u s t v a l v e s4.4Solenoid valves MFHE/Pneumatic valves VLHE AccessoriesIndividualunitsStart-upandexhaustvalves 4.4。

截止阀用途和使用说明

截止阀用途和使用说明

截止阀产品使用说明书厦门弗瑞特流体控制有限公司目录一,截止阀(stop valve,Globe V alve)的启闭件是塞形的阀瓣,密封面呈平面或锥面,阀瓣沿流体的中心线作直线运动。

阀杆的运动形式,有升降杆式(阀杆升降,手轮不升降),也有升降旋转杆式(手轮与阀杆一起旋转升降,螺母设在阀体上)。

截止阀只适用于全开和全关,不允许作调节和节流。

截止阀属于强制密封式阀门,所以在阀门关闭时,必须向阀瓣施加压力,以强制密封面不泄漏。

当介质由阀瓣下方进入阀六时,操作力所需要克服的阻力,是阀杆和填料的磨擦力与由介质的压力所产生的推力,关阀门的力比开阀门的力大,所以阀杆的直径要大,否则会发生阀杆顶弯的故障。

近年来,从自密封的阀门出现后,截止阀的介质流向就改由阀瓣上方进入阀腔,这时在介质压力作用下,关阀门的力小,而开阀门的力大,阀杆的直径可以相应地减少。

同时,在介质作用下,这种形式的阀门也较严密。

我国阀门“三化给”曾规定,截止阀的流向,一律采用自上而下。

截止阀开启时,阀瓣的开启高度,为公称直径的25%~30%时,流量已达到最大,表示阀门已达全开位置。

所以截止阀的全开位置,应由阀瓣的行程来决定。

截止阀的分类1.根据截止阀的通道方向,分为:1)直通式截止阀2)直流式截止阀:在直流式或Y形截止阀中,阀体的流道与主流道成一斜线,这样流动状态的破坏程度比常规截止阀要小,因而通过阀门的压力损失也相应的小了。

3)角式截止阀:在角式截止阀中,流体只需改变一次方向,以致于通过此阀门的压力降比常规结构的截止阀小。

4)柱塞式截止阀:这种形式的截止阀是常规截止阀的变型。

在该阀门中,阀瓣和阀座通常是基于柱塞原理设计的。

阀瓣磨光成柱塞与阀杆相连接,密封是由套在柱塞上的两个弹性密封圈实现的。

两个弹性密封圈用一个套环隔开,并通过由阀盖螺母施加在阀盖上的载荷把柱塞周围的密封圈压牢。

弹性密封圈能够更换,可以采用各种各样的材料制成,该阀门主要用于“开”或者“关”,但是备有特制形式的柱塞或特殊的套环,也可以用于调节流量。

止回阀zGLO Fig. 201用户手册说明书

止回阀zGLO Fig. 201用户手册说明书

USERS MANUALStop valve zGLO Fig. 201Edition: 07/2016 Date: 01.07.2016CONTENTS1. Product description2. Requirement for maintenance staff3. Transport and storage4. Function5. Application6. Assembly7. Maintenance8. Service and repair9. Reasons of operating disturbances and remedy 10. Valve service discountinuity 11.Warranty terms1. PRODUCT DESCRIPTION201figureends threaded form straightStop valves are manufactured at different executions, they are designed for shut off and open the flowStop valves are provided with casted marking according to requirements of PN-EN19 standard. The marking facilitates technical identification and contains:∙ diameter nominal DN (mm), ∙ pressure nominal PN (bar),∙ body and bonnet material marking,∙ arrow indicating medium flow direction, ∙ manufacturer marking, ∙ heat number,∙ CE marking, for valves subjected 2014/68/UE directive. CE marking starts from DN322. REQUIREMENTS FOR MAINTENANCE STAFFThe staff assigned to assembly, operating and maintenance tasks should be qualified to carry out such jobs. If during valve operation heat parts of the valve, for example handwheel, body or bonnet parts could cause burn, user is obliged to protect them against touch.3. TRANSPORT AND STORAGETransport and storage should be carried out at temperature from –200 to 650C, and valves should be protected against external forces influence and destruction of painting layer as well. The aim of painting layer is to protect the valves against rust during transport and storage. Valves should be kept at unpolluted rooms and they should be also protected against influence of atmospheric conditions. There should be applied drying agent or heating at damp rooms in order to prevent condensate formation. The valves should be transported in such a way to avoid handwheel and valve stem damage.4. FUNCTIONApplication range was mentioned at catalogue card. The kind of working medium makes some materials to be use or to be prohibited for use. Valves were designed for normal working conditions. In the case that working conditions exceed these requirements (for example for aggressive or abrasive medium) user should ask manufacturer before placing an order.When selecting the valve for specific medium,”List of Chemical Resistan ce ” can be helpful. It can be found at manufacturer website near catalogue cards.Working pressure should be adapted to maximum medium temperature according to the table as below.ZETKAMA Sp. z o.o. ul. 3 Maja 12PL 57-410 Ścinawka ŚredniaAcc. to EN 1092-2 Temperature [º C]Material PN -10 do 120 150 200EN-GJL250 16 16 bar 14,4 bar 12,8 barPlant designer is responsible for valve selection suitable for working conditions.5.APPLICATIONApplication range was mentioned at catalogue card.6.ASSEMBLYDuring the assembly of balancing valves following rules should be observed:-to evaluate before an assembly if the valves were not damaged during the transport or storage,-to make sure that applied valves are suitable for working conditions and medium used in the plant,-to take off dust caps if the valves are provided with them,-to protect the valves during welding jobs against splinters and used plastics against excessive temperature,-steam pipelines should be fitted in such a way to avoid condensate collection; in order to avoid water hammer steam trap should be applied.Pipeline where the valves are fitted should be conducted and assembled in such a way that the valve body is not subjected to bending moment and stretching forces.Bolted joints on the pipeline must not cause additional stress resulted from excessive tightening, and fastener materials must comply with working conditions of the plant,-during pipeline painting valve stem should be protected,-stop valves can be assembled in any position, however it is recommended to install the valve with handwheel upwards, -screw down and non-return valves (version with spring) can be assembled in any position, screw down and non-return valves (version without spring) should be assembled only on the horizontal pipelines with handwheel upwardsIt should be take note of medium flow direction, marked with an arrow on the body.-before plant startup, especially after repairs carried out, flash out the pipeline through entirely open valve, in order to avoid solid particles or welding splinters which may be harmful for sealing surfaces,-strainer ( wire mesh filter) installed before the valve increases certainty of its correct action.7.MAINTENANCEDuring maintenance following rules should be observed:-startup process – sudden changes of pressure and temperature should be avoided when starting the plant,- valve is closed by turning the handwheel clockwise when looking from above the handwheel (according to arrow direction marked on the handwheel),-valve is opened by turning the handwheel counter-clockwise,It is prohibited to use additional lever when turning the handwheel,-performance of fitted valves can be checked by multiple closing and opening,-if leakage on stem occurs for valves Fig.201 packing rings are pressed by tightening threaded gland nut screwed in the bonnet, the nut press the rings by gland,Tighten the nuts-in the case of necessity to replace packing rings, it should be done without overpressure inside the valve, when the valve is completely open. In this position inner space of the valve is entirely shut off,-in order to refill packing rings of valves can be refilled when gland nut is unscrewed.In order to assure safety performance, each valve (especially rarely used) should be surveyed on regular basis.Inspection frequency should be laid down by user, but not less than one time per month.8.SERVICE AND REPAIRAll service and repair jobs should be carried out by authorized staff using suitable tools and original spare parts. Before disassembly of complete valve from the pipeline or before service, the pipeline should be out of operation. During service and repair jobs it is necessary to decrease pressure to 0 bars , valve temperature to ambient temperature and to use personal health protectives in pursuance of existing threat. After valve disassembly it is necessary to replace flange connection gaskets between valve and pipelineEverytime when valve bonnet was disassembled sealing surface should be cleaned. During assembly it should be applied new gasket of the same type as previously used. Body-bonnet bolt connections should be tighten when the valve is at open position.The bolts should be tighten evenly and crosswise by torque wrench.Tightness test should be carried out with water pressure of 1,5 nominal pressure of the valve.9.REASONS OF OPERATING DISTURBANCES AND REMEDY-When seeking of valve malfunction reasons safety rules should be strictly obeyedFault Possible reason RemedyNo flow Valve closed Open the valveFlange dust caps were not removed Remove dust caps on the flangesPoor flow Valve is not open enough Open the valveDirty filter Clean or replace the screenClogged pipeline Check the pipelineControl difficulties Dry stem Grease the stemGland packing tighten too much Slightly slacken gland nuts. Put attention tokeep stuffing box tightnessStem leakage Too much loose on the gland Tighten the gland untill tightness willbe reachedIf necessary add packing rings instuffing box. Keep special caution. Seat leakage Shut off not correct Tighten the handwheel without anyauxiliary toolsUszkodzone gniazdo lub grzybekSeat or disc damage Replace the valve and contact supplieror manufacturerApply the valve with balancing disc.Pressure difference too muchCheck if the valve was assembledaccording to arrow direction markedon the valve.Clean the valve. Fit strainer before the Medium polluted with solid particlesvalve.10.V ALVE SERVICE DISCOUNTINUITYAll obsolete and dismantled valves must not be disposed with houshold waste. ZETKAMA valves are made of materials which can be re-used and should be delivered to designated recycling centres.11.WARRANTY TERMS- ZETKAMA grants quality warranty with assurance for proper operation of its products, providing that assembly of them is done according to the users manual and they are operated according to technical conditions and parameters des cribed in ZETKAMA’s catalogue cards. Warranty period is 18 months starting from assembly date, however not longer than 24 months from the sales date. - warranty claim does not cover assembly of foreign parts and design changes done by user as well as natural wear.- immediately after detection the user should inform ZETKAMA about hidden defects of the product- a claim should be prepared in written form.Address for correspondence :ZETKAMA Sp. z o.o.ul. 3 Maja 1257-410 Ścinawka ŚredniaPhone +48 74 86 52 111Fax +48 74 86 52 101Website: 。

美标截止阀说明书

美标截止阀说明书

截止阀使用说明书公司标识公司名称1. 用途和性能规范1.1用途: 截止阀适用于工业管路上,作为启闭机构。

1.2性能规范:2. 工作原理和结构说明2.1本手动阀门按顺时针方向旋转手轮时,阀瓣向下运动使密封面闭合,既为关闭;逆转时则为开启。

该产品在阀盖上端设有阀杆螺母,转动阀杆,阀杆上下运动,达到开关的目的。

2.2工作介质由阀瓣的下面往上流,也可反方向流。

2.3阀座与阀瓣的密封面采用不锈钢堆焊或镶铜合金,软密封阀座堆焊不锈钢。

详细说明见小样图所示。

2.4本阀门的结构长度按ANSI B16.10的规定;法兰连接尺寸:ANSI B16.5 。

3.主要外形尺寸和连接尺寸:3.1连接尺寸:4.主要零件的材料:5.维护保养和安装使用注意事项5.1本阀门通路两端须堵塞,存放在干燥通风的室内,如长期存放,应经常检查,防止锈蚀。

5.2安装前应将阀门清洗干净,并消除在运输过程中造成的缺陷。

5.3安装时必须仔细核对阀门上的标志和铭牌是否符合使用要求。

5.4本阀门可安装于任何工作位置,但必须便于检修和操作,阀体上的流向与管道内介质流向一致。

5.5本阀门在运行时应全开或全关,不能作节流使用,以免密封面受冲刷加速磨损。

5.6开启或关闭阀门时应用手轮,不得借助杠杆或其它工具5.7传动部位应保持清洁,定期加注润滑剂。

6. 可能发生的故障及其消除办法6.1填料处渗漏(1)填料压盖太松,可均匀地将压紧填料压盖用的螺母旋紧。

(2)填料圈数不够,应增加填料。

(3)填料由于使用过久或保存不当失效,应更换填料。

6.2阀瓣和阀座密封面处渗漏(1)密封面间夹有污物,可冲洗消除之。

(2)密封面如有损伤,应重新研磨,必要时可重新堆焊及加工,研磨的密封面必须平整,其粗糙度不得低于0.4,软密封的应更换橡胶圈。

6.3阀体和阀盖连接处渗漏(1)螺母拧得不紧或松紧不均匀,可重新调整之。

(2)法兰密封面上有损伤或积有污物。

应进行修整密封面或清除污物。

(3)垫片损坏,应更换新垫片。

Parker Hannifin Z1DW NG06 快速关断阀门参考手册说明书

Parker Hannifin Z1DW NG06 快速关断阀门参考手册说明书

7Z1DW*E without inductive position controlZ1DW*E with inductive position controlDirect operated, spool-type sandwich DC valves series Z1DW size NG06 are used for shutting off the flow in stack systems.For shut off secondary ports A and B, body version A is applied. P and T are drilled through.For applications with port B drained in a switching posi-tion to tank, body version B is used. P and A are drilled through.Valves are sealed to the manifold side.The valves can be ordered with inductive position control optionally.Attention:The adjustment of the position control is factory set and sealed. Replacement and repairs can only be undertaken by the manufacturer.Technical Features• Shut-off sandwich valve NG06• Inductive position control optional7Series Z1DWOrdering CodeSpoolSpool BodySize 1) W ithout position control.2) T o be used in combination with rectifier plugs at 120 VAC / 230 VAC power supply.3) F or hydraulic presses according to the safety regulations DIN EN ISO16092-3, manual override code “T” (without manual override) and position control “I4N” or “I5N” (start position monitored) are required.4) Please order female connector M12x1 separately (see accessories in chapter 2, female connector M12x1 (order no.: 5004109).Sandwich Wet pin Z 1WD Further spool types and voltages on request.Connector as per EN 175301-803, without plug (please order plug separately)Solenoid voltage Positioncontrol Manual override option CodePosition control Spool position omit Standard C, E, B, K I2N 4)End position monitored side B E, B(Solenoid on a-side)I5N 3)4)Start position monitored side B I1N 4)End position monitored side A K(Solenoid on b-side)I4N 3)4)Start position monitored side ACode Voltage K 12 V =J 24 V =U 2)98 V =G 2)205 V =Code Manual override omit Standard valve with manual override T 3)without manualoverrideSealsCode Seals N NBR V FPMWDesignseries(not required for ordering)7Series Z1DWWith electrical connections the protective conductor (PE W) must be connected according to the relevant regulations. Technical Data7Series Z1DWPosition ControlElectrical characteristics of position control as per IEC 61076-2-101 (M12x1)DefinitionsStart position monitored:The valve is de-energized. The inductive switch gives a signal at the moment when the spool leaves the spring offset position (below 25 % spool stroke).At the switching point the spool is located within the clo-sed position. It is secured that only the flow paths of the offset position are granted.The switch can only be located on the opposite side of the solenoid for direct operated valves.Please order plug M12 x 1 separately (see accessories, plug M12x1; order no.: 5004109).End position monitored:The inductive switch gives a signal before the end position is reached (above 75 % spool stroke).M12 pin assignment1 + U S 19.2...28.8 V2 Out B: normally open3 0V4Out A: normally closedU SOut GNDOut neg.Outputs: Open collector1) Only guaranted with screened cable and female connector21347Series Z1DWCharacteristic CurvesFlow curvesShift limitsM easured with HLP46 at 50 °C, 90 % U nomand warm solenoids.50100150200250300350102030405060Flow [l/min]Pressure[bar]01/023703/04The flow curve diagram shows the flow versus pressuredrop curves for all spool types. The relevant curve numberfor each spool type, operating position and flow directionis given in the table below.7Series Z1DWDimensionsZ1DW Standard B, E -styleK -styleC -styleThe space necessary to remove the plug per EN 175301-803, design type AF is at least 15 mm. The torque for the screw M3 of the plug has to be 0.5 to 0.6 Nm.Solenoid is freely turnable.Solenoid is freely turnable.7Series Z1DWZ1DW with inductive position controlInterface EN 175301-803, DC solenoid, without plug M12x1 1)B, E -style1)Please order plug M12 x 1 separately (see accessories, plug M12x1; order no.: 5004109).DimensionsK -styleThe space necessary to remove the plug per EN 175301-803, design type AF is at least 15 mm.The torque for the screw M3 of the plug has to be 0.5 to 0.6 Nm.Attention: The adjustment of the position control is factory set and sealed. Replacement and repairs can only be undertaken by the manufacturer.。

截止阀使用说明书

截止阀使用说明书

截止阀使用说明书1.用途和性能规范:本阀门系BS1873常规型截止阀,适用于温度为 -20℉~ 800℉的水、蒸汽、油品其它非腐蚀介质的长输管线上,用来截断或接通介质流体介质。

2.工作原理和结构说明2.1本阀门系常规截止阀,装置在水平管线上,依靠手轮的转动而开闭阀瓣,用于截断或接通流体介质。

2.2本阀门结构长度按ANSI B16.10规定,端法兰按ASME B16.5规定。

2.3中头垫片使用304 SS+柔性石墨垫片。

2.4本阀门的基本结构按照BS1873常规型截止阀规定。

2.5本阀门公称通径:6"3.4 阀门的流量系数验算:5保管、保养、按装调试、使用及维修5.1保管保养5.1.1本阀门应存放在干燥、通风的室内,阀门两端应封堵。

5.1.2存放的阀门应定期检查,清除污垢,并在加工面上涂防锈油。

5.1.3按装后,应定期进行检修。

5.1.4检修装配后,应进封试验,并作详细记录,以备查考。

5.2按装调试5.2.1按装前,仔细检查本阀门标志是否与使用要求相符。

5.2.2按装前,应检查阀门内腔和密封面,不允许有污垢附着。

5.2.3阀门按装或拆卸其所需空间应予考虑。

5.2.4在阀门按装于配管时,为防止阀瓣受配管的铁锈或其它物质的损坏,阀门应处于全开为位置。

5.2.5阀门在长期存放后,在使用前应进行操作试验。

5.2.6阀门按装后,应检查联接螺栓是否均匀拧紧。

5.3使用5.3.1在使用中,要求将阀瓣全开或全闭,允许将阀瓣部分开启作调节流量用。

5.3.2在使用中,应经常给阀杆梯形螺纹部分加含铜润滑剂。

5.3.3开启或关闭阀门时,应用手轮,不得借助杠杆或其它工具。

5.4维修ML/JS24-2004 截止阀使用说明书 3/3。

德国b+s ASB 型压力释放阀安全截止阀 手动操作式和电磁操作式说明书

德国b+s ASB 型压力释放阀安全截止阀 手动操作式和电磁操作式说明书
Accumulator connector
Test gage connector G1/2 (DIN EN ISO 228-1)
Test gage connector G1/4 (DIN EN ISO 228-1)
Pressure relief valve cavity thread M35x1.5
2/2 solenoid valve cavity thread 3/4-16 UNF-2B
Manual relief valve
für Ausführung mit elektromagnetisch betätigter CIRCUfüIrTADuIAsfGüRhAruMng mit handbetätigterEEnnttlalassttuunngg::
P
Ø20
37,5
PT
70
88
139
25
PORT DESCRIPTION
P
T S M1 M2 DBV SV V
Pump connector G1 (DIN EN ISO 228-1) M-version 400 bar E-version 400 bar
Tank connector G1/2 (DIN EN ISO 228-1)
MANUAL OPERATED
MANUAL AND SOLENOID OPERATED
S M1 M2
S M1 M2
PT
PT
∆p (bar) Accumulator safety blocks
FLOW CHARACTERISTICS
Flow direction: P-S
1,4 1,2
1 0,8 0,6 0,4 0,2
2/2 solenoid valve cavity thread 3/4-16 UNF-2B

截止阀使用说明书

截止阀使用说明书

ZX/QR-SJ016编号:J1302 API Std 602-2009钢制截止阀使用说明书J61W-800Lb NPS 1/4~2江苏新中信电器设备有限公司截止阀使用说明书一、用途钢制截止阀是采用美国API Std 602标准生产的石油天然气工业用阀门产品,是一种常用的截断阀,主要用来接通和截断管路中的介质,一般不用于调节流量。

本截止阀适用于工作温度≤538℃、工作压力≤PN14.0MPa工况条件下水、蒸汽、油品、硝酸等的各种管路。

二、工作原理此系列阀门为手动阀门,通过转动手轮而启闭阀瓣。

顺时针转动手轮为关逆时针转动为开。

三、标准与规范设计与制造结构长度承插端尺寸压力温度基准检验与试验API Std 602 API Std 602 ANSI B16.11 ANSI B16.34 API Std 598 阀门最大工作压力额定值(800级号压力-温度基准)(表压:MPa)温度(℃)-29~38 100 200 300 400 450 500 538 额定值(MPa)13.24 10.90 9.19 8.24 7.58 7.31 7.07 6.52 四、主要技术参数公称压力公称通径流道直径结构长度L(mm)中心高度全开H(mm)适用介质适用温度(℃)NPS(in)DN(mm) do(mm)PN14.0 Class800Lb1/4 8 6 79 169水、蒸汽、油品、硝酸-29~538 3/8 10 9 79 1691/2 15 10.5 80 1693/4 20 13.5 92 1701 25 18 111 2101 1/4 32 24 120 2251 1/2 40 29 152 2602 50 36.5 170 300五、主要外形、零件及连接尺寸1.阀体2.阀瓣3.阀杆4.垫片5.阀盖6.六角螺栓7.填料 8、圆柱销 9.填料压盖 10.填料压板 11.活节螺栓 12.螺母13.阀杆螺母 14.铭牌 15.手轮 16.垫圈 17.螺母六, 阀门主要零件材料零件名称阀体阀盖阀瓣阀杆中法兰垫片填料螺栓阀杆螺母所用材料F304 F304 304+STL 304 304+柔性石墨柔性石墨B8 A276 410七、运输、贮存、安装,使用及维护7.1 运输7.1.1、发运时,截止阀的阀瓣应处于关闭位置。

【F'A】截止阀使用说明书

【F'A】截止阀使用说明书

截止阀安装使用技术指导文件概述截止阀是用来关闭、开启和节流管道介质,截止阀可以完全阻断流体,在阀杆作用力下形成良好密封。

型截止阀根据阀门的总体设计安装要求确定。

截止止回阀在打开状态下可作为控制管道介质单向流动的元件,当介质顺流时由管线自身压力的作用开启阀门,当介质倒流时依靠阀瓣自身重量和介质回流的压力作用在阀瓣背部,使阀瓣与阀座形成密封,达到止回截流的追求。

在的开启位置至全开时,采用节流型阀瓣的截止阀对管线的流量调节是有效的。

该类阀门顺时针旋转手轮,阀瓣下降,直到完全将通道切断,阀门关闭。

逆时针旋转手轮,阀瓣上升,直到碰到阻挡,阀门打开。

对于电动装置阀门,在断电等紧急情况下,可以使用备用手轮打开和关闭阀门。

注意!在不超过开启状态连续节流会对阀瓣和阀座引起剧烈振动、噪音、磨损和损坏。

阀门的储存发运准备阀门的包装应能防止阀门在运输过程和储存时不发生任何损坏。

并应注意以下几点:) 包装时,阀瓣应处于关闭状态。

) 阀门法兰密封面焊接坡口螺纹端应涂合适的防护油脂(不锈钢材质除外),阀门两端应可靠地固接木质、木纤维或塑料端盖以防护连接端面和阀门内部。

) 电动装置阀门包装时须小心地安全固定,以确保电动装置不会损坏并不至于穿破木箱板条箱。

) 包装型式应在订单中明确要求,以便安全地运输至追求地和确保安装前的保存。

吊运要求. 包装完好的阀门板条箱:用叉车进行装卸。

木箱:在木箱的重心位置处设置装吊点进行装卸。

. 已开箱的阀门) 这些阀门的吊运要采取合适的手段和措施如应用货盘进行装卸,注意应避免加工面受到损坏。

) 对大尺寸阀门,在吊运阀门时可用皮带或链条绕过阀体的颈部吊起,并应保持平衡以防止意外坠落或在吊运过程中松动。

警告!) 吊运设备(如皮带、链条等)的尺寸须合适,以便足够承受阀门的重量。

) 吊运须由有资格人员制作。

) 吊运时应避免通过人员的上空或任何当意外坠落时可能导致损害的区域。

并按相关地方法律法规制作。

) 禁止通过绕在手轮、螺栓、马达、电动装置或其它附加装置上吊装阀门。

截止阀说明书

截止阀说明书

产品使用说明书气动截止阀2009年5月一、用途和性能规范:本阀门适用于工业管道上,作启闭装置。

二、主要零件材料:三、工作原理和结构说明:1制造与验收技术条件按 KFA33-88标准的规定。

2.阀门采用四柱式连接。

3.阀瓣和阀体密封面均采用硬质合金材料,抗擦伤性好,使用寿命长。

4.阀瓣采用锥面密封,介质流动方向从阀瓣下方流入,上方流出。

5.结构长度按ANSI B16.10的规定,焊接坡口按ASME B16.25要求。

6.气动阀门启闭由气动装置控制,可根据用户要求选用不同类型的气动装置。

四、保管、安装和使用:1.本阀门通路两端须封堵,存放在干燥通风的室内,长期存放应经常检查,防止锈蚀。

2.阀门到现场后不须解体,安装前将阀门两端堵头去掉,并检查和清洗体腔,通道和坡口.3.安装时必须仔细核对阀门上的标志和铭牌是否符合使用要求。

4.本阀门可安装于任何位置,但应便于检修和操作。

5.阀门在进行1.5倍设计压力的强度试验时禁止操作,以免损坏机件。

6.截止阀只作全开或全关使用,不作调节使用,以免密封面受冲刷加速损坏。

7.使用前应检查各连接螺栓是否均匀拧紧,特别是预紧螺栓,在运行72小时后应重紧一遍预紧螺栓。

8.传动部位应保持清洁,定期加注润滑油。

9.阀门发生故障时,应立即查明原因,并按本说明书消除之。

10.阀门自发货之日起十八个月内,在说明书规定的操作条件下,因设计、制造质量造成的损坏,由本厂负责。

五、可能发生的故障及其消除方法:1.填料函泄漏:(1).填料太松,应将填料压板均匀地压紧。

(2).填料圈数不够,应增加填料。

(3).填料失效,应更换新填料,但必须注意填料切口为45°,相邻两圈之间的接头不得凸起,并应平整地互相交叉错成120°。

2.密封副泄漏:(1).密封面间夹有脏物,应卸下清洗之。

(2).密封面擦伤磨损,应重新加工和研磨,若有严重缺陷时,应重新堆焊。

3.阀杆转动不灵活:(1).填料压得太紧,应适当地、均匀地拧松填料压盖上的两个螺母。

阿姆斯特朗TVS 4000 F型截止阀站使用说明书

阿姆斯特朗TVS 4000 F型截止阀站使用说明书

TVS 4000/F Trap Valve StationInstallation and Operation Manual79-C2General Safety InformationThis bulletin should be used by experienced personnel as a guide to the installation and maintenance of the TVS 4000/F Trap Valve Station Series. Selection or installation of equipment should always be accompanied by competent technical assistance. We encourage you to contact Armstrong or its local representative if further information is required.OperationIn a piston valve, the control of stem and seat leakage is obtained by tightness of valve sealing rings to the body and valve plug. The bonnet compresses the valve sealing rings against the body and the valve plug.Flexible disc springs automatically assure a tight seal by exerting pressure on the valve sealing rings, keeping them compressed.Opening and Closing the TVS Isolation Valve The isolation valve begins to stop flow when the valve plug enters the lower valve sealing ring.When the isolation valve is completely closed, the valve plug is in full contact with the valve sealing rings, ensuring the best possible seal. Since there is no metal to metal seating, torquing the isolation valve closed is not required. Armstrong recommends that after closing the isolation valve completely, the handwheel should be turned back one half turn. This makes it easy to re-open the valve after prolonged periods of no use.Testing TVS 4000/F Trap for OperationOpen test valve – Condensate may discharge from the test port on the bottom of the connector.Note: Test valve is on the inlet side of the casting marked “Test”.Caution: Hot condensate and flash steam will be discharged from the test port. Use caution as burns could occur to personnel.Close TVS outlet isolation valve.Observe trap operation at test port.To place trap back in operation open TVS outlet isolation valve and close test valve.Close test valve with 40-50 ft. lbs. torque.Testing TVS 4000/F Trap for OperationClose TVS 4000/F inlet and outlet isolation valves.Open TVS 4000/F strainer blowdown valve to relieve pressure inside trap.Caution: Hot condensate and flash steam will be discharged from the trap at the strainer blowdown valve discharge port. Use caution as burns could occur to personnel.After pressure has been relieved, remove bolts and the trap.Clean trap connector sealing surfaces.Apply “never seize” to the new trap bolts, insert bolts through connector block making sure, if the trap is an inverted bucket type it is in the vertical position. Tighten bolts evenly.Close TVS 4000/F strainer blowdown valve.Open TVS 4000/F inlet and outlet isolation valves.Check for leaks around trap connector.3Troubleshooting – TVS 4000/F Isolation ValvesA piston valve will retain its leak tightness for several years without maintenance. In severe service, such as rapid heating and cooling, some field maintenance may be required. Depending on the problem, these simple steps may help:Isolation valve leaks when the valve is closed. First, Check to make sure the valve is actually closed. Check to see if bonnet is seated on the body, if not, tighten the bonnet bolts until the bonnet seats. This compresses the valve sealing rings against the body and the valve plug. If valve continues to leak, replace the isolation valve assembly.Valve stem leaks. Same as above.Maintain the isolation valves as soon as leakage starts. Internal leakage can wear the valve plug or valve sealing rings and they will have to be replaced if leakage continues.Caution: Before tightening the bonnet bolts, make sure the valve is in the closed position.Test valve leaks. Reseat with 40-50 ft. lbs. torque.Removing the bonnet assembly, valve sealing rings, lantern bushing and valve washers.This can be done with the TVS 4000/F Trap Valve Station remaining in the steam line. Be sure to isolate the TVS 4000/F Trap Valve Station both up and down stream by using separate shut-off valves before performing any maintenance.Open TVS 4000/F Isolation ValvesOpen the bleed valve all the way slowly to depressurize trap and then open the test valve all the way until it stops.Loosen and remove the bonnet bolts.Pull bonnet assembly out of valve body.Remove valve sealing rings, valve washers and lantern bushing using a Packing Hook. Check to to see if all components, have been removed. Inspect and clean any debris that might have remained in the valve body.Installing New Isolation Valve AssemblyPlace Armstrong Part No. B7024 isolation valve assembly in valve body.Lightly tap the isolation valve assembly to the bottom of the valve body.Coat the treads of the bonnet bolts with “never seize”, insert bolts through bonnet and tighten evenly until the bonnet seats on the valve body.Check the TVS 4000/F isolation valve for proper operation by opening and closing the valve one or two times leaving them in the open position.Open isolation valves up and down stream from the Trap Valve Station and check for leaks with trap installed.Valve Assembly Part No. B7024Limited Warranty and RemedyArmstrong International, Inc. or the Armstrong division that sold the product (“Armstrong”) warrants to the original user of those products supplied by it and used in the service and in the manner for which they are intended, that such products shall be free from defects in material and workmanship for a period of one (1) year from the date of installation, but not longer than 15 months from the date of shipment from the factory, [unless a Special Warranty Period applies, as listed below]. This warranty does not extend to any product that has been subject to misuse, neglect or alteration after shipment from the Armstrong factory. Except as may be expressly provided in a written agreement between Armstrong and the user, which is signed by both parties, Armstrong DOES NOT MAKE ANY OTHER REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR ANY IMPLIED WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.The sole and exclusive remedy with respect to the above limited warranty or with respect to any other claim relating to the products or to defects or any condition or use of the products supplied by Armstrong, however caused, and whether such claim is based upon warranty, contract, negligence, strict liability, or any other basis or theory, is limited to Armstrong’s repair or replacement of the part or product, excluding any labor or any other cost to remove or install said part or product, or at Armstrong’s option, to repayment of the purchase price.As a condition of enforcing any rights or remedies relating to Armstrong products, notice of any warranty or other claim relating to the products must be given in writing to Armstrong: (i) within 30 days of last day of the applicable warranty period, or (ii) within 30 days of the date of the manifestation of the condition or occurrence giving rise to the claim, whichever is earlier. IN NO EVENT SHALL ARMSTRONG BE LIABLE FOR SPECIAL, DIRECT, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING, BUT NOT LIMITED TO, LOSS OF USE OR PROFITS OR INTERRUPTION OF BUSINESS. The Limited Warranty and Remedy terms herein apply notwithstanding any contrary terms in any purchase order or form submitted or issued by any user, purchaser, or third party and all such contrary terms shall be deemed rejected by Armstrong.Armstrong InternationalNorth America • Latin America • India • Europe / Middle East / Africa • China • Pacific Rimarmstrong 79-CPrinted in U.S.A. - 8/14© 2014 Armstrong International, Inc.。

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WCB
Chrome SS
Overlay welding Ferrous alloy
Flexible graphite
5.Maintenance, installation and usage:
5.1The valves shall be kept in a dry and well-ventilated room, the both ends shall be covered. If itisrestored for a long period, it shall be regularly inspected to prevent from rust.
2)If the packing gland is not correctly assembled to stick the stem, the gland nuts willbe evenly loosened to restore a correct place.
3)If the thread of the stem or stem nuts is hurt, it will be removed off after having been disassembled.
5.6A Valve shall be kept in fully open or fully close position after it is installed. It shall not be used as a throttle valve to avoid wearing out its seating surfaces quickly because oferosion.
批注本地保存成功开通会员云端永久保存去开通
Globe valve
O&M MANUAL
J41H-150LB DN15~150
Edited by
Date
Verified by
Date
Approved by
Date
DIRECTORY
1、Applications and Performance specification
6.3 Leakage occurs between bonnet flanges.
1) If the flange nuts are tightened loosely or unevenly, they will be evenly re-tightened.
2)If the faces of the flange are damaged or collected with dirt, they will be repaired orcleaned up.
6.2 Leakage occurs between the seating surfaces between the gate and seat.
1) If there is dirt between them, they will be cleaned by flush washing.
2)If the seating surfaces are damaged, they will be re-lapped, or machined and lappedafter weld deposition, and their surface roughness must be0.4μmand higher.
3.Main overall connection dimensions:
3.1Overall drawing
3.2Flange ends dimensions:
Model
NPS
DN
L
D
D1
D2
b
Z-d
H
W
kg
J41H-150LB
1/2
15
108
88.9
60.5
34.9
9.7
ห้องสมุดไป่ตู้4-16
169
125
3.8
5.4Its inspection packing whether compress tightly and ensure tightness of packing,meanwhileit don’t prevent stem rotated.
5.5A valve can be installed on pipes in any direction, but it should be easy to be checked and operated.。
2、Principle and structural description
3、Main overall dimensions and connecting dimensions
4、Material of main parts
5、Maintenance, installation and usage
3/4
20
117
98.5
70
43
11.2
4-16
180
125
4.2
1 1/2
40
165
127
98.5
73.2
12.7
4-16
347
180
13
2
50
203
152
120.7
92
15.9
4-19
356
180
21
5
125
356
254
216
186
23.9
8-22
463
350
86
6
150
406
279
241.5
216
6、Possible trouble and solution
7.Matters need attentions
1.Applications and Performance specification
1.1 Applications:
Globevalve usedfortheworktemperature ≤ 200℃water, steam, petroleum, petroleum productsmedium inpipeline, whichused toget throughorcut-offthe mediain pipeline.
3)If the gasket on flange is damaged, it will be replaced with a new one.
6.4 The stem cannot operate smoothly.
1) If the packing is over-tightened, please loosen the gland nuts properly and evenly.
25.5
8-22
541
355
113
4.Manly material:
Body、bonnet、disc
Stem
Sealing
Packing
Bolt
Nut
A105
Chrome SS
Overlay welding Ferrous alloy
Flexible graphite
ASTM
A193 B7
ASTM A194 2H
1.2Performance specifications:
Nominal dimension(NPS)
1/2”~6″
in
Pressure(Class)
150
Lb
Test pressure
Shell
3.1
MPa
Seal
2.2
Air
0.6
Application T
-29~425
ºC
Suitable medium
2.2The stembottom anddisc joint together,the top and the stem nut rotationjoint, the clockwisedirectly start rotatehand wheel, when stemdropping,jointing closely disc and seatsealing surface to prevent medium in pipeline.thediscshallrisingwhile hand wheelstartanti-clockwise to rotate thatwillconnectto the mediainpipeline,which meansopen.
2.3The Seat and disc sealing surface used in Stainless steel with overlay welding.
2.4Valve design and manufacture byAPI 6Dstandard;Face-to-face byANSI B16.10standard;Flange ends byANSI B16.5standard;Inspection and test by API 598standard;valve pressure-temperature level byASME B16.34 standard.
5.7Its moving parts shall be kept clean and regularly lubricated.
5.8The valve shallbe checked regularly after used, check the sealing surface,stem, gasket and packing haveworn outor not, If the damage to failure,itsshould be repaired or replacedpromptly.
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