The working principle of the multi functional water pump control valve is as follows: after the water pump is started, the water pressure acts on the lower part of the valve disc of the main valve and the lower cavity of the control chamber, the pressure causes the main valve to open, the water in the upper cavity of the control chamber is slowly discharged to the outlet end through the regulating valve b, and the main valve is slowly opened. Setting the opening of the regulating valve to obtain the proper opening speed of the main valve. when the water pump stops working, the water pressure of the inlet end is rapidly reduced, a large part of the opening degree is rapidly closed under the action of the self-weight and the spring pressure, the remaining opening degree of the reverse flow of water is slowly closed under the combined action of the water pressure of the upper cavity of the control room and the water pressure of the lower cavity, and the closing speed is reduced to form a buffer, Prevent pressure surges
The product is used on the water pump outlet pipe of high-rise building water supply system and other water supply system to prevent and reduce the water hammer water hammer of the pipeline when the water pump is on and off, to prevent the water from flowing back to the water pump and to maintain the pipeline safety.
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HENAN SHANGFA VALVE CO., LTD.
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