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Electric Butterfly Valve
- Apr 28, 2018 -

Electric adjustment butterfly valve is a kind of electric valve and electric control valve. The main connection methods are: flange type and wafer type. It is an important execution unit in the field of industrial automation control. Electric adjustment butterfly valve installation points two major analysis: installation location, height, import and export direction must meet the design requirements, pay attention to the direction of media flow should be consistent with the direction of the body arrow, the connection should be firmly close. Electric adjustment butterfly valve must be checked before installation. The nameplate of the valve shall comply with the current national standard "General Valve Marking" GB12220. For valves with a working pressure greater than 1.0 MPa and a cut-off on the main pipe, strength and tightness tests shall be performed before installation. Qualified to use. 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. Electric adjustment butterfly valve can be divided into offset plate type, vertical plate type, inclined plate type and lever type according to the structural form. According to the sealed form, it can be divided into soft seal type and hard seal type. Soft seals are generally rubber ring seals, and hard seals are usually metal ring seals.