The Main Role of the Pressure Reducing Valve

With the wider use of machinery fittings, the valve industry has been boomingly developed. The market demand for pressure reducing valve is greatly enhanced as well. As a result, the purchase of pressure reducing valve has aroused attention. So, how can we choose the better pressure reducing valve?

The principle of the pressure reducing valve is to reduce the water pressure by the local resistance of the flow channel in the valve to the water flow. The range of the pressure drop is automatically adjusted by the pressure difference between the inlet and outlet of the diaphragm or the piston connected with the valve flap. In recent years there have been some new types of pressure reducing valves, such as constant proportional pressure reducing valve. The principle of decompression is the use of valve body floating piston hydraulic ratio control, making entrance and exit side decompression ratio and the piston area ratio inversely proportional. This valve works smoothly without vibration. There is no spring in the valve body, so there are no rust or metal unavailable failure considerations. Its good sealing performance without leakage enables dynamic pressure (when water flows) and static pressure (when there is no flow) to be reduced, especially in the flow is not affected in the process of depression.

Though there is huge loss when water flows through the pressure reducing valve, it’s still generally energy-efficient due to reduced water wastage and reasonable system flow distribution as well as improved system layout and operating conditions. Pressure reducing valve for each spring is only applicable within a certain range of outlet pressure, and it should be replaced when out of range. In the occasions that the temperature of medium is relatively high, pilot-piston valve or pilot bellows-type valve is normally chosen. Direct-acting membrane valve or pilot membrane valve is then a priority when the medium is air or water (liquid). For steam as medium occasions, a decent choice is the pilot-piston valve or pilot bellows-type valve. For the convenience of operation, adjustment and maintenance, the pressure reducing valve should generally be installed on the horizontal pipe.

For more information, please visit

Real-Time Gas Analysis and Reaction Monitoring usi...
Reducing air pollution from coal power plants in t...


Already Registered? Login Here
No comments made yet. Be the first to submit a comment
© 2018 CivilEarth. All Rights Reserved.