jktl valve,ball valve
HEBEI TONGLI AUTOMATIC CONTROL VALVE MANUFACTURING  CO.,TLD.

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How to prevent the media backflow jktl check valve working principle analysis
check valve,jktl check valve
The role of this type of jktl valve is to allow only the medium to flow in one direction, and to prevent the direction of flow. Usually this valve is automatically working, in a direction of the flow of fluid under pressure, the valve flap open; the flow of fluid in the opposite direction, By the fluid pressure and the valve flap from the valve flap acting on the valve seat, which cut off the flow.

The check valve belongs to this type of valve, which includes a swivel check valve and a lift check valve. The swivel check valve has a hinge mechanism, and a valve-like valve flap free to rest on the inclined seat surface. in order to ensure that the valve flap each time to reach the seat surface of the appropriate position, the valve design in the hinge mechanism, so that the valve flap has enough to open space, and the valve flap real, comprehensive contact with the valve seat. The flap can be made entirely of metal and can also be used Metal inlaid leather, rubber, or synthetic coverage, depending on the performance requirements. Swing check valve in the fully open condition, the fluid pressure is almost unimpeded, so the pressure drop through the valve is relatively small.

The flap of the descending check valve is located on the valve seat sealing surface of the valve body. This valve in addition to the valve can be free to lift, the rest as the same as the valve, the fluid pressure to the valve from the valve seat sealing surface lift, the media back to the valve and back to the seat, and cut off the flow. Depending on the conditions of use, the flap may be of the all-metal structure or in the form of a rubber pad or rubber ring in the flap frame. Like a globe valve, the passage of fluid through the lift check valve is also narrow, so the pressure drop through the lift check valve is larger than the
swing check valve, and the flow of the swivel check valve is limited.