buneenglan46

China Check Valve Screw End manufacturers H14 check valve connection type: thread Structure: spin starter Nominal diameter: 1/2 "-4" (mm) Applicable medium: various highly corrosive chemical media Pressure environment: atmospheric pressure Standard: national standard Flow direction: unidirectional Screw check valve drive mode: manual Working temperature: normal temperature Type (channel position): straight-through Swing Check Valve A basic swing Check valve consists of a valve body, a bonnet, and a disk that is connected to a hinge. The disk swings away from the valve-seat to allow flow in the forward direction, and returns to valve-seat when upstream flow is stopped, to prevent backflow. The disc in a swing type Check valve is unguided as it fully opens or closes. There are many disk and seat designs available, in order to meet the requirements of different applications.