比例弁
Cavity: 19A-3 (19AB-3)
Rated Flow: 200.77 gpm 760 L/min
Ordering Code:LO-19A-3D-D-8

Unbalanced poppet, vent-to-open, switching element, main-stage with integral 8A-2/08W-2 control cavity (spring biased closed, higher of ports 1 or 2 pilot source)

Configuration
Reset To Default
Operation
  • Standard Options
  • 3DSpring biased closed, higher of ports 1 or 2 pilot source
Springs (cracking pressure)
  • Standard Options
  • D3.5 bar at port 1 (standard)
  • B1.2 bar at port 1
Cavities
  • Standard Options
  • 88A-2 cavity
  • 8W08W-2 cavity

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), 2.84 lbs (Z=8W) 1.22 kg (Z=8), 1.29 kg (Z=8W)
Area Ratio A3 to A1 1.8 : 1
Area Ratio A3 to A2 2.25 : 1
This is an unbalanced poppet logic element valve with an integral shuttle, allowing the higher pressure from either port 1 or port 2 to serve as a pilot source. When a pilot 2-way valve is installed in the 8A-2 or 08W-2 cavity in the closed position, the logic element remains in the closed position. When the pilot valve is open, the logic element will open if there is a sufficient combination of pressures at port 1 and port 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 A2 is 2.25:1.
  • Please take note of if the selection Y=B, the response speed of spring return 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 LO19A3D-8 unbalanced poppet, vent-to-open, switching element, main-stage with integral 8A-2/08W-2 control cavity (spring biased closed, higher of ports 1 or 2 pilot source), illustrating the pressure and flow characteristics from port 1 to port 2
Technical Informations:

Seals Informations: