升降式止回阀使用说明

Type HY41W lift check valve HY41W型升降式止回阀

An instruction manual

使用说明书

Lift check valve for use

升降式止回阀使用说明

1. Purpose and performance specifications用途和性能规范：

The valve is used for industry pipeline for preventing medium

countercurrent device本阀门用于工业管道上作阻止介质逆流的装置。Performance specification性能规范

2. Function principle and structure作用原理和结构说明：

The valve is in use process, as shown in the direction of the arrow flow medium.

When the medium in the specified direction flow valve medium, by force, be opened; media inverse

Flow valve, because the valve by the medium weight and reverse force, so that the valve flap and the valve seat.

Cover sealing off, in order to prevent the medium countercurrent purpose.

本阀门在使用过程中，介质按图示箭头方向流动。

当介质按规定方向流动时，阀瓣受介质力的作用，被开启;介质逆

流时，因阀瓣自重和阀瓣受介质反向力的作用，使阀瓣与阀座的密

封面密合而关闭，达到阻止介质逆流的目的。

1

2.1The valve structure length according to the provisions of GB12221-1989,

flange connection dimension according to JB / T79-1994 regulations本阀门的结构长度按GB12221-1989的规定，法兰连接尺寸按JB/T79-1994的规定。

3. Main outline主要外形：

4. Material of main parts主要零件的材料：

2

5.Storage, installation and use保管、安装和使用

①The valve channel to be blocked at both ends, in a dry and ventilated room.

Such as long-term storage, should always check the corrosion prevention本阀门通路两端须堵塞，存在干燥通风的室内。如长期存放，应经常检查防锈蚀。

②Before installation should be clean and remove valve, in the transport

process caused by defects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。

③The installation must be carefully checked valve on the sign and nameplate

with the use requirements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。

④The valve installed in the horizontal pipe, valve cover up本阀门安装在水平管道上，阀盖向上。

6.Possible faults, causes and eliminating measures可能发生的故障、原因及消除办法：

6.1The valve body and the valve cover junction leakage阀体和阀盖连接处渗漏:

(1)The nut is screwed too tight or elastic inhomogeneity, can be adjusted螺母拧得不紧或松紧不均匀,可重新调整之。

(2)Flange sealing face of damage or accumulate dirt, shall be modified

sealing surface or removing filth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)Gasket is damaged, replace the new gasket垫片损坏，应更换新垫片。

3

6.2The valve and valve seat sealing surface leakage阀瓣与阀座密封面处渗漏(1)The sealing surface is clamped between the dirt, can be cleane密封面间夹有污物，可清洗干净。

(2)The sealing surface is damaged, to ground or to welding and machining密封面有损伤，重新研磨或重新堆焊及加工。

4