Project Description

Plastic Pressure Regulator

SpringSet Pressure

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General Description

This direct acting 3-way pressure regulator is actuated by a pressure responsive diaphragm, which seeks to reach equilibrium between hydraulic and set spring forces, is used in pressure reducing and pressure sustaining/relief applications. Also available in normal pressure or low pressure configurations.

The pilot directs flow and pressure between its port

  • when sensed pressure above set point, it connects port 0 to port 3;
  • when sensed pressure is equal to set point,it blocks connections between all ports;
  •  when sensed pressure below set point, it connects port 3 to port 2.
  • Relevant pressure is continuously sensed through port 1.

Typical Applications

  • Pressure Reducing Valves (3-Way Control Circuit Type) Sizes from 1½” to 4”;
  • Pressure Sustaining Valves (3-Way Control Circuit Type) Sizes from 1½” to 4”;
  • Adjustable 3-way Hydraulic Relay (N.O. or N.C.);
  • Automatic Regulation Override, Sizes from 1½” to 4”.
Technical Data  
Pressure Rating10 bar145 psi
Working Temperature50 ℃122 ℉
Flow Factor  
Port 0 to 3KvCv
0.13 m³/h @ 1 bar0.15 GPM @ 1 psi
Port 3 to 2KvCv
0.08 m³/h @ 1 bar0.09 GPM @ 1 psi
Ports Size1/8" Female NPT Threads
Port "0"Upstream for reducing, Vent for sustaining
Port "3"Valve control chamber
Port "2"Vent for reducing, Upstream for sustaining
Port "1"Downstream for Pressure sensing