Do not allow the check valve to withstand the weight in the pipeline. The large check valve should be supported independently so that it is not affected by the pressure generated by the piping system. When the butterfly check valve is installed, note that the direction of the flow of the media should be the same as that of the valve body. Should be installed in the vertical pipe, the role of the principle and structure that the valve in use, the media flow in the direction of the arrow. When the medium flows in the specified direction, the valve plate by the role of medium force, was opened; medium countercurrent, due to the valve self-weight and the valve by the role of the reverse force of the media, so that the valve flap and seal the sealing surface Close, to prevent the purpose of the media countercurrent.
Performance:
  Butterfly check valve, also known as one-way valve or check valve, its role is to prevent the pipeline in the medium back. Water pump off the end of the valve also belong to the check valve class. Forged steel check valve has two kinds of body cover connection design form: The first is the body bolts connected to the forged steel check valve, according to the connection design of the valve, the valve body and the valve cover with bolts, Piece seal, for example, is easy to repair; the second body cover full-welded sealed forged steel check valve, according to the connection design of the valve, the valve body and bonnet connected with snails, full welding seal, the advantage is no leakage The Forged steel check valve flap form also have cut-off type, needle type, ball type, can be reasonably selected according to the actual situation. Check valve is an automatic valve, its main role is to prevent the media back to prevent the pump and drive the motor reversal, and the container media discharge.