Gate Valve is the gate to open and close documents, gate movement direction perpendicular to the direction of the fluid, Gate valve can only be fully open and fully closed, can not be adjusted and the throttle.
Gate valve can be divided according to different classification methods: parallel gate valve, wedge gate valve, lift valve, rotary Gate valve rod, quickly open and close valve, necking Gate valve, flat Gate valve and so on.
1), installation position, altitude, direction of imports and exports must meet the design requirements, the connection should be firmly tight.
2), installed in various types of pipe insulation manual valve handle shall not be down.
3), the Stainless Steel Gate Valve must be installed before the visual inspection of the valve plate should be consistent with current national standards, “Universal Valve logo” GB 12220′s requirements. For working pressure greater than 1.0 MPa and cut off the main pipe played the role of the valve And installation should be carried out before the strength and rigorous performance tests, passing behind the prospective use. Strength test, the test pressure is 1.5 times the nominal pressure, duration of not less than 5min, the Cast Iron Gate Valve housing, packing should be no leakage as qualified. Tightness test, the test pressure for the nominal pressure of 1.1 times; test pressure in the test duration should be consistent with GB 50243 standards, the valve sealing surface with no leakage to pass.
The article comes from Gate Valves Manufacturers.
Category: Brass Valves
You can follow any responses to this entry through the RSS 2.0 feed.Both comments and pings are currently closed.