Check valve is to rely on the flow of the medium itself automatically open and close the valve, the valve is used to prevent the media back.

1.Lift check valve: valve slide along the vertical centerline of the valve body.Lift check valve can be installed in horizontal pipe, small diameter high pressure valve can be used on a ball check valve. Lift check valve body shape and the same (with the cut-off valve common), so it's fluid drag coefficient.

2.Swing check valve: valve seat around the outside of the valve pin rotation.Figure:

Swing Check more general use.

3.Disc check valve: valve seat around the valve pin rotation.

Disc check valve structure is simple, can only be installed in horizontal pipelines, poor sealing.

4.Pipeline valve, the valve slide along the centerline of the valve body.

Pipeline valve is a valve emerging, its small size, light weight,Good processing, is the development direction of the check valve. But the fluid drag coefficient is slightly larger than the swing check valve.

Keywords:knife gate valve,ball valve,globe valve,slurry gate valve,butterfly valve