Electro-Proportional Valves
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Note: Data may vary by configuration. See CONFIGURATION section.

Cavity 19A-3 (19AB-3)
Rated Flow 200.77 gpm 760 L/min
Maximum Operating Pressure 5000 psi 350 bar
Valve Hex Size 1-5/8 in. 41.2 mm
Valve Installation Torque 343 - 369 lbf-ft 465 - 500 Nm
Weight 2.69 lbs (Z=8), 2.64 lbs(Z=8W) 1.22 kg (Z=8), 1.29 kg (Z=8W)
Area Ratio A3 to A1 1.8 : 1
Area Ratio A2 to A1 2.25 :1
This is an unbalanced poppet logic element valve. Port 1 serves as the pilot source. Port 1 serves as the pilot source, and the valve is spring-biased closed. When a pilot 2-way valve is installed in the 8A-2 or 08W-2 cavity in the closed position, the valve remains closed. When the pilot valve opens, it will open if there is sufficient pressure at ports 1 and 2 to overcome the spring force. To maintain closure, the combined force (force generated at port 3 plus spring force) must exceed the forces at port 1 and port 2.

  • All ports can withstand up to 350 bar (5000 psi).
  • Area ratio of A3 to A1 is 1.8:1.
  • Area ratio of A3 to A1 is 2.25:1.
  • Please note that the response speed of the spring returning to option Y=B is slower.
  • For the solenoid operated with Z=8W, please refer to EP-08W-2A-51-Z-04 or EP-08W-2A-52-Z-04.
  • Working parts are heat-treated and high-precision ground to increase hardness for long life.
  • 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.
pressure drop curve for LO19A3A-8 unbalanced poppet, vent-to-open, switching element, main-stage with integral 8A-2/08W-2 control cavity (spring biased closed, pilot source from port 1), illustrating the pressure and flow characteristics from port 1 to port 2