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Installation Instructions of Large Diameter Cast Iron Gate Valve

Large diameter cast iron gate valve used to cut off or connect the line of medium. with different materials. It applied to water, steam, oil, nitric acid, acetic acid, oxidizing medium, urea and other media with different materials. There are many applications on the oil pipeline.

Cast Steel Check Valve

 

Main points of installation:

1, The installation position, height, import and export direction must comply with the design requirements, the connection should be solid and close.

2, The handle of all kinds of manual valves installed on the insulated pipe shall not be downward.

3, Visual inspection must be made installation. For the cutting off cast iron gate valves in the main pipe, if working pressure greater than 1 MPa, the performance test of strength and tight should be qualified before using. The strength test. The test pressure is 1.5 times the nominal pressure, duration of not less than 5min, the valve housing, packing should be no leakage is qualified. Tightness test, the test pressure is 1.1 times the nominal pressure. The test pressure shall comply with GB 50243 Standard Test duration Quasi requirements, in order to gate sealing surface leakage is qualified.

We are Cast Iron Gate Valve Manufacturer in China, our main products catalogue are gate valve, globe valve, check valve, butterfly valve, ball valve and strainer.

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