如何选配阀门

如何指定和订购正确的阀门

How to Specify and Order the Correct Valves

这本颁布的样本帮助您为各种管道应用领域选择正确的阀门。Aloyco(阿罗伊科)阀门系列为您提供一个广泛的选择。本样本对这些阀门进行了介绍。

This catalog has been published to assist you in choosing the correct valve for a vast number of piping conditions. The Aloyco product line makes available to you a very broad choice of valves. These valves are described in this catalog.

在为您的应用选择最适当的阀门时需要小心谨慎。必须明确每个阀门的规格说明，避免含糊不清。在寻求报价或订购时，必须对产品进行充分恰当的说明描述。

Care should be taken to select the most suitable valves for your service(s). Exact specification of each valve should be made to avoid possible ambiguity. When requesting quotations and/or ordering the product a fully adequate description should be made.

确定阀门的通径

Selecting the Valve Size

必须确定阀门将要安装进去的管道的公称通径。

Nominal size of the pipeline into which the valve will be placed must be determined.

阀门材料

Valve Material

在确定正确的阀门材料时，需要考虑下列因素：

The following facts should be considered in determining the correct valve material:

∙将要流经的流体介质

the medium or media which will be controlled

∙管道流体介质的温度范围

the temperature range of the line medium (media)∙相关阀门的压力范围

the pressure range to which the valve will be subjected ∙可能影响阀门的气候条件

possible atmospheric conditions which may affect the

valve

∙相关阀门的可能出现的异常应力

possible extraordinary stresses to which the valve will be

阀门和连接

Valve and Connections

在确定管线中阀门的连接方法时，需要考虑到管道的整体性，今后的维护，腐蚀性，现场安装，重量和安全等因素。

Considerations as to pipeline integrity, future maintenance, corrosion factors, field assembly, weight and safety should be given in determining the method of connecting the valve in the pipeline.

操作方法

Method of Operation

所供应的阀门的操作方法在本样本中有描述。许多其它操作装置通常由Aloyco(阿罗伊科)提供。

The means by which the valve is operated as supplied are shown for the valves in this catalog. Many optional operating devices are regularly supplied by Aloyco.

阀门的订购

Ordering the Valve

为了避免不必要的耽误，确保我们提供给您的阀门符合您的要求，请在订购时，提供下列资料：

Please state the following information when ordering a valve in order to avoid unnecessary delays and to insure we supply you with the valve you have requested.

1. 阀门通径

Valve size

2. 压力材料：铸件和部件的金属性能

Pressure boundary material - metallurgy of the castings

and components.

3. 阀门的类型：闸阀，截止阀，止回阀，等等

Type of valve - gate, globe, check, etc.

4. 连接方式，如果是焊接端口和任何法兰面或表面，则包括连

接管道的壁厚。

End connection including wall thickness of connecting pipe

if weld end and any special flange facings or finishes

5. 任何非标准的材料：填料，垫圈，螺栓，等等

Any material deviations from standard - packing, gasket,

bolting, etc.

6. 任何附件：酸外壳，锁定装置，链条操作，等等

Any accessories - acid shield, locking devices, chain