Butterfly buffer check valve classification

Butterfly buffer check valve according to its structure and installation can be divided:

1.butterfly buffer check valve disc was disc-shaped, around the seat of the shaft for the rotation of the shaft, because the valve channel into a streamline, flow resistance than the butterfly check valve is small, suitable for low flow rate And the flow is not changing the large aperture occasions, but not for pulsating flow, the sealing performance is less than lift. Butterfly check valve is divided into single, double and multi-type three, these three forms mainly by the valve caliber to the purpose, in order to prevent the media to stop the flow or back flow, weaken the hydraulic shock.

2.butterfly buffer check valve: valve flap along the vertical center of the valve body sliding check valve, the internal thread check valve can only be installed in the horizontal pipe, in the high pressure small diameter check valve on the valve can be used round ball. The butterfly check valve has the same shape as the shut-off valve (which can be used with the globe valve), so its fluid resistance coefficient is large. The structure and the valve is similar to the valve body and valve and the same valve. The upper part of the valve flap and the lower part of the valve cover are machined with a guide sleeve. The valve guide can be freely lifted in the valve guide. When the medium flows downstream, the valve flap is opened by the medium thrust. When the medium stops, Hanging down on the seat, from the media to prevent countercurrent effect. Straight-type butterfly check valve medium inlet and outlet channel direction and the direction of the valve seat channel vertical; vertical lift check valve, the media inlet and outlet channel direction and the same direction of the valve seat, the flow resistance than the straight through.

3.butterfly buffer check valve: valve flap around the valve seat rotation of the check valve. Disc-type check valve structure is simple, can only be installed in the horizontal pipe, the seal is better.

4.butterfly buffer check valve: valve flap along the valve center line sliding valve. Pipeline check valve is a new type of valve, its small size, light weight, processing technology is good, is one of the direction of development of the check valve. But the fluid resistance coefficient is slightly larger than the swivel check valve.

5.pressed check valve: This valve is used as boiler feed water and steam cut off the valve, it has a lift check valve and cut valve or angle valve integrated function.

In addition, there are check valves that do not apply to pump outlet installation, such as bottom valves, spring type, Y type and other check valves.