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Nuclear power self-reliance

Product description

Form    style

Self-operated pressure regulating valve

Nominal diameter

DN15~DN450 (1/2~18)

Nominal pressure

PN10, 16,25,40,50, 64,100, 110, 150, 250, 320, 420

ANSI Class 150,300,600, 900, 1500, 2000, 2500

Valve 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,ha C, etc.

Fill    Material

V-type PTFE; flexible graphite; bellows

Traffic Features

equal percentage, linear, quick open


Hard Seal: IV, V     Soft Seal: Level VI

Connection method

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

bonnet type

Standard type, coolingType,Corrugated pipe seal type, low temperaturetype


Spool type

Single seat, sleeve, double seat

  • Overview 
  • The self-operated pressure regulating valve does not need external energy, and uses the energy of the controlled medium as the 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 rate, the pressure before the valve (or after the valve) is stable. It has the advantages of sensitive action, good sealing performance and small pressure fluctuation. It is widely used in various industrial equipments, and is used for automatic control of gas, liquid and vapor medium decompression and pressure relief or pressure relief.
  • There are three types of actuators: diaphragm type, piston type and bellows type; the type of operation includes post-pressure valve pressure adjustment (type B) and pressure relief valve front pressure regulating valve (type K).
  • Valve design and material selection according to working conditions. The design scheme is selected according to the calculation results of the flow coefficient, the noise level, and the fluid state. 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 trimmed valve trim has a simple structure, stable operation, high adjustable range and adjustment ratio, and a soft seal spool with 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.
Corresponding parameter set not found, please add it in property template of background
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