About this product:
Stainless steel check valve only allows the medium to flow in one direction and prevents the medium from flowing in the opposite direction. Usually, the check valve operates automatically. Under the pressure of fluid flowing in one direction, the valve disc opens; when the fluid flows in the opposite direction, it is cut off by the fluid pressure, the self-weight of the valve disc and the action of the valve disc on the valve seat. Check valves include swing check valves and lift check valves. The swing check valve has a media hinge mechanism and a valve disc that rests freely on the inclined seat surface like a door. In order to ensure that the valve disc can reach the appropriate position on the valve seat surface every time, a hinge mechanism is set up in the valve disc so that the valve disc has enough swing space to truly fully contact the valve seat. The disc may be constructed entirely of metal or may have a leather, rubber or synthetic covering surface embedded in the metal, depending on applicable performance requirements. When a swing check valve is fully open, there is little obstruction to fluid pressure, so the pressure drop across the valve will be relatively small. The disc seat 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 be lifted and lowered freely, the rest of the valve is similar to the globe valve. The fluid pressure lifts the valve disc from the valve seat sealing surface, causing the medium to flow back to the valve seat and cutting off the flow. Depending on the conditions of use, the valve disc can be an all-metal mechanism, or a rubber pad or rubber ring can be embedded on the valve disc bracket. Like the stop 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 greatly restricted.
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