General Pump - Interpump 66 series W4518 triplex pressure wash pump

Water sprays through one nozzle port at a time since a stainless steel ball covers the opposite port

#20 - 2500-4000PSI

General Pump - Interpump 44 series W956 A triplex pressure wash pump

1/4" MPT Stainless Inlet and Stem

PA VBHT33 Hot Water Unloader Valve 21gpm 4500psi easy-start-valves General Pump - Interpump 66PA VB HT33 hot water unloader valve. 4500psi Maximum Rated Pressure 21 gpm 1 2" Inlet Outlet Bypass 90C 195F (continuous duty) **Caution** Unloader valves are one of the most important safety devices on a pressure washer system. Failure to install and set the unloader properly could result in a very dangerous situation causing severe damage to the pump and possibly the operator. Professional installation is required.