RP820ECK EPOXY COATED PILOT OPERATED BACK PRESSURE REGULATOR
RP820ECK EPOXY COATED PILOT OPERATED BACK PRESSURE REGULATOR

Category

Pilot Operated Control Valves

Manufacturer

Mankenberg Industrial Valves

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RP820ECK EPOXY COATED PILOT OPERATED BACK PRESSURE REGULATOR

RP820ECK EPOXY COATED PILOT OPERATED BACK PRESSURE REGULATOR

Category

Pilot Operated Control Valves

Manufacturer

Mankenberg Industrial Valves

Self-acting back pressure regulators are simple control valves offering accurate control while being easy to install and maintain. They control the pressure upstream of the valve without requiring pneumatic or electrical control elements.


The RP 820 overflow valve is a pilot-controlled control valve consisting of a main valve, a pilot valve complete with restrictor assembly and built-in strainer mounted on the cover of the main valve, non-return valve and restrictor valves. The valve cone can be fitted with a soft or metallic seal.


When the pipeline is depressurised the main valve is kept closed by a preloaded spring.


When the inlet pressure is above the set pressure the pilot valve is kept open by a piston. The control medium can flow towards the valve outlet. Restrictor D1 produces a pressure drop causing the outlet pressure to be almost equal to the pilot pressure in the main valve piston. The inlet pressure overcomes the pilot pressure and closing force of the spring and opens the main valve.


When the inlet pressure has reached the set pressure, the pilot valve restricts the flow. This causes the pilot pressure to rise and push the main valve piston into a controlling position. The restrictors D1 and D2 are used to optimise the control characteristics. The bypass fitted with a non-return valve ensures quick closing.

When the inlet pressure falls below the set pressure the pilot valve closes. The pilot pressure is equal to the inlet pressure. The main valve closes as the piston diameter is greater than the valve seat. The spring also forces the valve to close.


The valve is piped internally. The pulse lines must be installed on-site.


    These valves are no shut-off elements ensuring a tight closing of the valve. In accordance with DIN EN 60534-4 and/or ANSI FCI 70-2 they may feature a leakage rate in closed position in compliance with the leakage classes III or V:
  • Leakage class III (metal sealing cone) = 0.1 % Kvs value
  • Leakage class V (soft seal cone) = 1.8 x 10-5 x ?p x D* [l/h] *D=seat diameter

Please click HERE to view the RP820ECK One Sheeter

 


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