Interpump W21 Unloader Valve

Interpump W21 Unloader Valve allows the gun and hose to remain fully pressurized while the pump loads to near zero psi.  Excellent for use on single or multiple gun systems.

Interpump W21 Unloader Valve Features:

  • 3000 psi Max.Pressure
  • 4.0 gpm Max.Flow
  • 200°F Max. Temperature
  • 1/2" BSP-F Inlet
  • 3/8" BSP-M Outlet/Bypass
  • 1/4" hose barb
  • Chemical injector/bypass
  • Repair kit (valve): RKI093
  • Repair kit (injector): RKI094
  • Replacement nozzle: 10007666I
  • Suggested unloader for 44, 47, 49, 50, 51, 60 and 63 series IP pumps
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