Thread end socket weld end c ast steel swing check valve

Check valve also known as one-way valve or reverse check valve, its function is to prevent the medium in the pipeline backflow. The bottom valve of the pump suction shut also belongs to the type of check valve. A valve that opens or closes on its own by the flow and force of the medium to prevent the flow of the medium is called a check valve. Check valve belongs to automatic valve class, mainly used on the pipe of medium unidirectional flow, only allow medium to flow in one direction to prevent accidents. Check valve according to structure, can be divided into lift check valve, swing check valve and butterfly check valve three kinds. Lift check valve can be divided into vertical and horizontal two. There are three types of rotary check valve: single valve, double valve and multi valve. Butterfly check valve is straight-through type, the above several check valves in connection form can be divided into thread connection, flange connection and welding three.

Features:

1/4~3 (DN6~DN80)

W.P.:200WOG (PN16)

W.T.:-20℃-180℃

Investment casting

Swing type disc

Presicion grinding

Thread end:ASME B 1.20.1 (NPT)

DIN 259/DIN 2999,BS 21,

ISO 288-1,ISO 7-1

Socket weld end: ASME B 16.11

Unit:mm

|52|

|53||54|
|55||56|