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Pilot operated self-operated pressure regulating valve

Product description

Shape    style

Pilot operated self-operated pressure regulating valve

Nominal diameter

DN15~DN100 (1/2~4)

Nominal pressure

PN10, 16,25,40,50, 64,100, 110, 150, 250, 320, 420
ANSI Class 150, 300, 600, 900, 1500, 2000, 2500

Body and bonnet material

WCB, CF8, CF8M, CF3, CF3M, WC1, WC6, WC9, LCB, LCC, LC3, Hastelloy C, etc.

Internal material

304, 304+Stellite, 316L, 316L+Stellite, 2205, Hastelloy C, etc.

Fill in    material

O-ring; V-polytetrafluoroethylene; bellows

Flow characteristics

Equal percentage, linear, quick opening


Hard seal: IV, V grade     Soft seal: VI grade

Connection method

Flange type (RF, MFM, RJ) Weld type (SW, BW)

Bonnet type

Standard type, heat sink type, bellows seal type, low temperature type

Spool type

Single, sleeve, double seat

  • The pilot operated self-operated pressure regulating valve does not need external energy, and uses the energy of the controlled medium as its power source to introduce the actuator to control the position of the spool to change the flow area, so as to achieve the purpose of changing the flow, which is before the valve (or after the valve). The pressure is stable. It has the advantages of sensitive action, good sealing performance and small pressure fluctuation. It is widely used in the automatic control of gas decompression and voltage regulation in various industrial equipments.
  • The actuators are available in film and bellows.
  • Valve design and material selection according to working conditions. Particularly suitable for use in storage tanks, the selection of suitable materials for different tank liquid compositions. According to the flow coefficient and noise level. The calculation result of the fluid state is selected as a design scheme.
  • The accuracy of the control valve selection depends on the accuracy of the information provided by the customer. The use of a porous control element reduces the noise level by approximately 10 dB (decibel) compared to a molded valve plug.
  • The valve trim with sleeve guiding multi-stage step-down has a simple structure and stable operation, ensuring a high adjustable range and adjustment ratio, and reducing noise. The soft sealing spool has a high sealing performance.
  • If you add a throttle sleeve, you can reduce the noise by about 5 decibels because it reduces the pressure difference between the seat and the plug. If a blocking flow, cavitation, or flashing occurs, it is recommended to use a control valve that adds a sleeve.
  • Specially designed control valves are available depending on the fluid conditions and customer requirements for materials, flow factors, control characteristics, seat leakage, etc.
  • The bellows seal prevents corrosion or toxic media from leaking.
  • Easy-to-remove and assembled trim for easy maintenance and service.
  • The pressure guiding tube has two kinds of copper tube and stainless steel.
  • Depending on the process, choose a different actuator.
  • The application of advanced materials and advanced processing methods (surface polishing, surfacing, titanium oxide, heat treatment or surface plating of chromium nitride and sprayed tungsten carbide) make the valve long life and high reliability.
  • The decompression ratio is <12000; the control precision is high.
  • Minimum set pressure up to 0.1kpa
Corresponding parameter set not found, please add it in property template of background
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