1) The installation location, height, and direction of inlet and outlet must meet the design requirements, and the connection should be firm and tight.
2) For all kinds of manual valves installed on the insulation pipe, the handles must not be downward.
3) Appearance inspection must be carried out before the valve is installed, and the nameplate of the valve should comply with the provisions of the current national standard "General Valve Marking" GB 12220. For valves with a working pressure greater than 1.0 MPa and which function as a cut-off on the main pipe, strength and tightness performance tests should be carried out before installation, and they can only be used after passing the test. During the strength test, the test pressure is 1.5 times the nominal pressure, and the duration is not less than 5 minutes. The valve shell and packing should be qualified if there is no leakage. During the tightness test, the test pressure is 1.1 times the nominal pressure; the test pressure should meet the requirements of the GB 50243 standard for the duration of the test, and it is qualified if there is no leakage on the sealing surface of the valve disc.
4) Handwheels, handles and transmission mechanisms are not allowed to be used for lifting, and collisions are strictly prohibited.
5) The gate valve with transmission mechanism shall be installed according to the product instruction manual.
What are the installation points of the gate valve?
Jul 14, 2023 Leave a message
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