Vacuum butterfly valve installation mainly need to pay attention to these points

Vacuum butterfly valve installation mainly needs to pay attention to these points

1. The installation position, height, and inlet and outlet direction must meet the design requirements. Note that the direction of the medium flow should be consistent with the direction of the arrow marked on the valve body, and the connection should be firm and tight.

2. The electric butterfly valve must be inspected before installation. The nameplate of the valve should conform to 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, the strength and tight performance tests shall be carried out before installation, and shall be used after passing the test. In the strength test, the test pressure is 1.5 times the nominal pressure, the duration is not less than 5 min, and the valve casing and the packing should be free of leakage. In the rigorous test, the test pressure is 1.1 times the nominal pressure.