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Gate valve installation points
Apr 23, 2018

1) The installation position, height, and direction of import and export must meet the design requirements and the connection should be firm and tight.

Dark rod wedge cast iron gate valve

Dark rod wedge cast iron gate valve

2) All types of manual valves installed on the insulation pipe shall not be downwards.

3) Before the valve is installed, a visual inspection must be performed. The nameplate of the valve shall comply with the provisions of the current national standard "General Valve Mark" GB 12220. For valves with a working pressure greater than 1.0 MPa and a shut-off effect on the main pipe, strength and tight performance tests shall be performed before installation. In the strength test, the test pressure is 1.5 times the nominal pressure, and the duration is not less than 5 minutes. The valve housing and the packing should have no leakage as qualified. For the tightness test, the test pressure is 1.1 times the nominal pressure; the test pressure shall meet the requirements of GB 50243 standard for the duration of the test, and no leakage of the valve sealing surface shall be qualified.

4) Handwheels, handles and transmission mechanisms are not allowed to be lifted. No collision is allowed.

5) The gate valve with transmission mechanism shall be installed in accordance with the instructions of the product manual.