Ventilation butterfly valve is one of the many types of butterfly valve, it has a wide range of use and many advantages, which is also the reason why the ventilation butterfly valve by consumers like.In order to help you use the correct ventilation butterfly valve, small make up on the ventilation butterfly valve structure characteristics and installation instructions to do some introduction!
Installation instructions for ventilation butterfly valve:
On the ventilation butterfly valve structure characteristics and installation instructions, small series on the introduction of so much, I hope the above can help you, the valve in use, such as found fault, should immediately stop using.The connecting bolts between the ventilation butterfly valve and the pipeline shall be tightened several times according to the diagonal direction during installation, and shall not be tightened single time to prevent the leakage of flange connection caused by uneven force.When the ventilation butterfly valve is installed, it is advisable to use the butterfly plate in the closed position to prevent sundries from entering the valve cavity to rub the sealing surface. When the user wants to test the pressure, it is necessary to use flanges at both ends to test the pressure after clamping.When the valve is connected with the pipeline, it is required to use butt-welded steel flange or special flange for ventilation butterfly valve on the pipeline.If a flat welded steel flange is used, the flange inner hole is required to be as large as the gasket inner hole to ensure the effective sealing surface of the gasket.The opening and closing stroke of the control mechanism has been adjusted when the ventilation butterfly valve leaves the factory. In order to prevent the wrong direction when the power supply is connected, the user should manually open 1/3 of the position before the power supply is connected.Check that the direction of the indicator panel is consistent with the valve opening direction.
Before installation, carefully check whether the mark and qualification certificate of the valve meet the use requirements, and after verification, it should be cleaned.Uninstalled valves should be stored in a dry room.Keep the valve for a long time, clean it regularly, blow dry and apply anti-rust oil.Blind plate shall be applied to protect flange sealing surface at both ends of valve.Install according to the flow direction of medium;Horizontal installation is preferred.
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