25p Pilot Type Steam Pressure Reducing Valve, Ductile Iron Pn16 Pressure Regulator DN25 - DN100

Structural characteristics and applications
25P is a self acting pilot valve type pressure reducing valve. Sensing downstream pressure through an external pressure sensing tube, adjusting the opening of the main valve and maintaining pressure stability. When there is no load downstream, the valve can be closed to stabilize the downstream pressure at the adjusted pressure value. The pressure reducing valve is of the pilot valve type, with a single seat main valve and a hard alloy core treatment. It adopts flat and conical sealing methods and meets the ANSI Level 4 leakage standard.
The valve adopts a large diaphragm and external detection structure to achieve stable secondary pressure control, and has excellent control performance for changes in primary side pressure and secondary side load.
This product is precise and reliable, capable of reducing steam from high pressure to the effective working range of equipment and preventing equipment damage.

Shell material
Ductile iron

Valve body nominal pressure and maximum operating temperature
Valve body design pressure: PN16
Ductile iron: ≤ 232ºC

Specifications and Connections
DN15-DN150 flange connection PN16/PN25
DN15-DN150 flange connection ANSI150

Pressure reduction ratio and pressure control range
Pressure reduction ratio 10:1
Provide three different colors of springs to control downstream pressure:
Yellow: 0.2 bar g-2.1 bar g
Blue: 1.4 bar g-7.0 bar g
Red: 5.6 bar g-14.0 bar g

Product Assembly Table

Installation precautions
1. The front end of the pressure reducing valve should be equipped with a steam water separator, and a drain valve should be installed at the bottom of the steam water separator.
2. The front-end should be equipped with a filter with a mesh size of 100.
3. Install bellows globe valves before and after the pressure reducing valve, and choose full bore globe valves to ensure rated flow and good control.
4. Pressure gauges should be installed before and after the pressure reducing valve.
5. The pressure reducing valve pipeline should be equipped with a bypass, and the equipment can be used for maintenance of the pressure reducing valve without shutting down.
6. When selecting a safety valve, the maximum flow rate of the pressure reducing valve should be considered when the safety working pressure of downstream equipment jumps, because the reseating characteristics and pressure reducing valve should be considered when the pressure reducing valve fails.
7. Pressure setting during no-load operation. The distance from the pressure reducing valve should be at least 3 meters. Otherwise, due to rapid pressure fluctuations, the pressure reducing valve may not be able to reduce pressure normally in a short period of time or greatly shorten its service life.

PRV-25P pressure reducing valve flow meter

(kg/h)