Electro-Proportional Valves
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  • Product Description
  • Performance Curve
  • Technical Reference
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Note: Data may vary by configuration. See CONFIGURATION section.

Cavity 12W-3
Rated Inlet Flow 30.12 gpm 114 L/min
Priority Flow 15.06 gpm 57 L/min
Maximum Operating Pressure 3400 psi 240 bar
Valve Installation Torque 40 - 49 lbf-ft 54 - 66 Nm
Coil Type EC-23C
Linearity (with Dither) < 2 %
Repeatibility (with Dither) < 2 %
Hysteresis (with Dither) < 4%
Hysteresis with DC Input < 8%
Weight 1.63 lbs (with coil), 0.86 lbs (wihtout coil) 0.74 kg (with coil)；0.39 kg (without coil)
This is a direct-acting, spool-type, normally closed, pressure compensated electro-proportional priority flow control valve. It controls flow to the priority port (port 3), with excess input flow bypassed to port 2. Once the bypass port is blocked, it functions as a two-port, electro-proportional, pressure-compensated flow control valve, regulate the flow from port 1 to port 3. Flow from port 3 is proportional to current applied to the solenoid.

  • Note: When used as a bypass flow control valve, and the priority port (port 3) is blocked by an external valve, it will result in port 2 being closed. Please ensure port 3 allows flow.
  • If you need other flow options, please contact the Winner sales department.
  • Continuous-duty rated coil.
  • Efficient wet-armature construction.
  • Bypass flow does not work until the priority flow is satisfied.
  • Pressure at port 2 (bypass port) may be higher than pressure at port 3 (priority port).
  • Priority and bypass flow can be employed within the system's operating pressure range.
  • Working parts are heat-treated and high-precision ground to increase hardness for long life.
  • Regardless of how the inlet flow rate changes, the priority flow rate remains at a relatively constant level.
  • A variety of seal kit materials for different applications, see seals information under Technical Reference.
  • Winner's cartridges pressure rating tested to the standard of the NFPA specification T2.6.1 and the fatigue rating's assurance and verification level is “90/90”. 
  • WINNERcoat® Zinc-Nickel Plating is salt spray tested in accordance with DIN EN ISO 9227 for up to 1000 hours.
  • Winner guarantees that all products performance a 100% functional test before shipment.
flow vs. command current curve for PFR12W3G normally closed electro-proportional bypass/restrictive flow control valve, giving recommended continuous energization range