Unloaders and Relief Valves


PA VBHT33 Hot Water Unloader Valve 21gpm 4500psi

PA VB-HT33 hot water unloader valve.

4500psi Maximum Rated Pressure

  • 21 gpm
  • 1/2" Inlet / Outlet / Bypass
  • 90°C / 195°F (continuous duty)


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.