Proportional pressure reducing valve is widely used in high-rise water supply system
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Release Time：2021-05-21
Proportional pressure reducing valve is a pressure reducing valve designed according to a certain proportion of import and export pressure, which is mostly used in residential water supply system and used in conjunction with adjustable pressure reducing valve. It is a widely used pressure reducing valve in high-rise water supply system. Commonly used ratio values are 2: 1 (outlet pressure is 50% of inlet pressure),3: 1(33%),4: 1(25%),3: 2(66%),5: 2(40%). There are flange connection and threaded connection.
Proportional pressure reducing valve is a pressure reducing valve designed according to a certain proportion of import and export pressure, which is mostly used in residential water supply system and used in conjunction with adjustable pressure reducing valve. It is a widely used pressure reducing valve in high-rise water supply system. Commonly used ratio values are 2: 1 (outlet pressure is 50% of inlet pressure),3: 1(33%),4: 1(25%),3: 2(66%),5: 2(40%). There are flange connection and threaded connection.
Proportional pressure reducing valve is mainly composed of valve body, valve core and cylinder liner. Seat. O-ring, and other parts. Working principle: The piston type valve core acts on the two end faces under the pressure of the pipeline medium. Because the area of the piston end face is large at one end and small at one end. In order to maintain the balance of the valve core, the pressure of the medium acting on both sides of the valve core will be different. And inversely proportional to the area size. P1 * S1 = P2 * S2. P1 inlet end pressure, P2 outlet end pressure. S1 inlet end ring area, S2 outlet end ring area. Because the spool size is certain, so the import and export pressure is also a fixed value. Can't change. To achieve different import and export pressure ratio. Replace the cylinder liner and valve core can be achieved.
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