1. Compact structure, light weight, easy to install, small flow resistance, large flow volume, avoid the influence of high temperature expansion, easy to operate.
2. No connecting rods, bolts, etc., reliable operation, long service life. Can be installed in multiple positions, not affected by the flow direction of the medium
The damper butterfly valve is a non-sealed butterfly valve, widely used in the production process of building materials, metallurgy, mining, electricity, etc., with medium temperature Less than or equal to 300 degree and nominal pressure of 0.1Mpa pipeline, used to connect, open and close or adjust the medium flow.
The whole is made of high-quality materials, which is harder than ordinary materials, easy to operate and has a long service life.
1. The installation position, height, and inlet and outlet directions 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 appearance of the valve must be inspected before installation, 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 a cut-off function 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 housing and packing should be leak-free to be qualified. During the tightness test, the test pressure is 1.1 times the nominal pressure; the test duration meets the requirements of GB 50243.
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