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Rubber-coated check valve manufacturers take you to understand the working principle of the check valve

2022-03-03 14:53

Rubber-coated check valve manufacturers tell you that check valves can also be used on pipelines that supply auxiliary systems where the pressure may rise above the system pressure. Rubber-coated check valve manufacturers tell you that check valves can be mainly divided into swing check valves (rotating according to the center of gravity) and lift check valves (moving along the axis).

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The rubber-coated check valve manufacturer tells you that the function of this type of check valve is to only allow the medium to flow in one direction and prevent the flow in the opposite direction. Usually this kind of valve works automatically. Under the action of fluid pressure flowing in one direction, the valve flap opens; when the fluid flows in the opposite direction, the fluid pressure and the self-coincident valve flap of the valve flap act on the valve seat, thereby cutting off the flow.
Rubber-coated check valve manufacturers tell you that the check valve belongs to this type of valve, which includes swing check valve and lift check valve. Swing check valves have a hinge mechanism and a door-like disc that rests freely on the sloping seat surface. The rubber-coated check valve manufacturer tells you that in order to ensure that the valve disc can reach the proper position of the valve seat surface every time, the valve disc is designed in the hinge mechanism, so that the valve disc has enough swing space and makes the valve disc truly and comprehensively in contact with the valve seat. The disc can be made entirely of metal, or inlaid with leather, rubber, or synthetic overlays, depending on the performance requirements. Rubber-coated check valve manufacturers tell you that when the swing check valve is fully open, the fluid pressure is almost unimpeded, so the pressure drop through the valve is relatively small. The disc of the lift check valve is located on the sealing surface of the valve seat on the valve body. Except that the valve disc can rise and fall freely, the rest of the valve is like a globe valve. The fluid pressure lifts the valve disc from the sealing surface of the valve seat, and the backflow of the medium causes the valve disc to fall back to the valve seat and cut off the flow. The rubber-coated check valve manufacturer tells you that according to the conditions of use, the valve disc can be an all-metal structure, or it can be in the form of a rubber pad or rubber ring inlaid on the valve disc frame. Like the 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 that of the swing check valve, and the flow of the swing check valve is limited rare.

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