Interpump W21L Unloader Valve
Interpump W21L 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 W21L 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