Safety valve installation and maintenance
2015-07-03 by bridge
Safety gas valve installation and maintenance should note the following installation points
1, the installation position, altitude, direction of imports and exports must meet the design requirements, meaning the medium flow direction should be consistent with the direction of the arrow on the gas safety valves body, the connection should be firmly tight.
2, the valve must be visually inspected prior to installation, the valve plate should be consistent with the provisions of GB 12220 of the line national standards, "Universal Valve logo." For working pressure greater than 1.0 MPa and the role played off valve in the main pipe, the installation should be the strength and rigorous performance tests, passing behind the prospective use. Strength test, the test pressure is 1.5 times the nominal duration of not less than 5min, the valve housing, packing should be no leakage in compliance. Tightness test, the test pressure for the nominal pressure of 1.1 times; test duration in line with GB50243 requirements.
3, various safety valve should be installed vertically.