1.  Within the given spring pressure range, the outlet pressure shall be continuously adjustable between the maximum and minimum values, without any jamming or abnormal vibration.The main pressure reducing valve product names of China Pressure Reducing Valve Network include:diaphragm-Type Reducing Valve,Internal Thread Piston Steam Reducing Valve,Piston-Type Steam Reducing Valve,Proportional-Type Reducing Valve,Pilot-Type Oversized Diaphragm High Sensitivity Reducing Valve,

2.  For soft-sealing pressure reducing valves, there shall be no leakage within the specified time; for metal-sealing pressure reducing valves, the leakage shall not exceed 0.5% of the maximum flow rate.

3.  When the outlet flow rate varies, the deviation of the outlet pressure for direct-acting valves shall not exceed 20%, and for pilot-operated valves, it shall not exceed 10%.

4.  When the inlet pressure varies, the deviation of the outlet pressure for direct-acting valves shall not exceed 10%, and for pilot-operated valves, it shall not exceed 5%.Pressure relief valveStandard

5.  Generally, the downstream pressure of the pressure reducing valve should be less than 0.5 times the upstream pressure.

6.  Pressure reducing valves have a wide range of applications and can be used on equipment and pipelines for steam, compressed air, industrial gases, water, oil, and many other liquid media. The quantity of medium at the valve outlet is generally expressed in terms of mass flow rate or volumetric flow rate.Pressure relief valve Products

7.  Bellows-type direct-acting pressure reducing valves are suitable for low-pressure, small to medium bore steam applications.

8.  Diaphragm-type direct-acting pressure reducing valves are suitable for low to medium pressure, small to medium bore air and water applications.

9.  Pilot-operated piston-type pressure reducing valves are suitable for various pressures, various bore sizes, and various temperatures of steam, air, and water media. If manufactured from stainless acid-resistant steel, they can be used for various corrosive media.

10. Pilot-operated bellows-type pressure reducing valves are suitable for low-pressure, small to medium bore steam, air, and other media.

11. Pilot-operated diaphragm-type pressure reducing valves are suitable for low to medium pressure, small to medium bore steam or water media.

12. The fluctuation of the inlet pressure for the pressure reducing valve should be controlled within 80% to 105% of the given inlet pressure value. Exceeding this range will affect the valve's performance.

13. Typically, the downstream pressure of the pressure reducing valve should be less than 0.5 times the upstream pressure.

14. Each spring range of a pressure reducing valve is only applicable within a specific outlet pressure range; the spring should be replaced if the required pressure falls outside this range.

15. For applications with relatively high medium operating temperatures, pilot-operated piston-type or pilot-operated bellows-type pressure reducing valves are generally preferred.

16. For applications with air or water (liquid) media, direct-acting diaphragm-type or pilot-operated diaphragm-type pressure reducing valves are generally preferred.

17. For steam applications, pilot-operated piston-type or pilot-operated bellows-type pressure reducing valves are preferred.

18. For ease of operation, adjustment, and maintenance, pressure reducing valves should generally be installed on horizontal pipelines.

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