Test Procedure for Cast Steel Globe Valve with Additional Back Pressure

截止閥的主要作用是在管道系統(tǒng)中調(diào)節(jié)流量的一種閥門。相比其他閥門，它開閉過程于密封面的摩擦力小，經(jīng)久耐用，而且結(jié)構(gòu)簡單，維修和安裝都比較方便，所以有著很廣泛的應(yīng)用。

The main function of globe valve is to regulate the flow of a valve in the pipeline system. Compared with other valves, it has less friction on the sealing surface during the opening and closing process, durable, simple structure, convenient maintenance and installation, so it has a very wide range of applications.

設(shè)計標(biāo)準

Design standard

設(shè)計制造：鑄鋼截止閥按照BS 1873 and ASME B16.34

Design and Manufacture: Cast Steel Globe Valve According to BS 1873 and ASME B16.34

檢驗和試驗：API 598 法蘭連接：ASME B16.5

Inspection and test: API 598 flange connection: ASME B16.5

對焊端：ASME B16.25

Butt welding end: ASME B16.25

結(jié)構(gòu)長度：ASME B16.10

Structural length: ASME B16.10

溫壓等級：ASME B16.34

Temperature and pressure grade: ASME B16.34

操作形式：

Form of operation:

一般情況下采用手輪驅(qū)動或者齒輪傳動方法，可根據(jù)用戶需要采用鏈輪傳動或者電動裝置。

Generally speaking, handwheel drive or gear drive method is adopted, and sprocket drive or electric device can be adopted according to user's needs.