Swing check valve is in the pipes by the medium itself automatically open and close, belongs to the flow of the automatic valve by the force of. Check for piping system valve, its main role is to prevent the backflow medium, to prevent the pump and drive motor reversal, side by side out of the container. Can also be used to check the pressure can rise to the main system of auxiliary system of the supply of more than one pipe elevator inspection is to adjust system in the production process, the media lines within the one-way flow control valve, an important part of the back to prevent the media. Product features 1, elevating the flange check valves has simple structure, reliable operation, convenient maintenance, so they are widely used in purification equipment, petroleum, chemical industry, metallurgy, electric power, textile production process such as 2, when the flow of the medium, as shown in the arrows into the body is the upward thrust in the valve, pressure medium when media is greater than the force of gravity valve, valve to open. After the effect on the medium pressure valve valve with gravity pressure than they did before the forces acting on disc disc valve, the valve closed, to prevent the backflow medium. Check only allowed to medium flows in one direction, and to prevent in the opposite direction. Usually check valve automatically under the pressure of fluid flow in the Industrial Valves to open the action one direction; Fluid by its own weight, and the valve and valve seat valve function flow of fluid pressure in the opposite direction, thereby cutting off flow. Swing check valve in the fully open position, almost unimpeded fluid pressure, so the drops low pressure Industrial Valves. Elevating the position of the flange check valves, located in the valve seat sealing surface. In addition to the valve body can be freely, the other part as a cut-off valve, fluid pressure valve, described from the valve seat sealing surface, platform return to seat down on the road, and cut off the flow. According to the applicable case, the valve can make all metal body, it can be installed in the valve rubber mat or rubber ring in the form of a frame.
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