VB85-180/280 4500psi 21gpm 1/2" FPT Inlet

PA VB85-180/280 high flow unloader valve.

  • 4500psi max pressure (blue spring)
  • 21gpm rated flow
  • 90°C / 195°F max temperature
  • Type: trapped pressure

Inlet: 1/2" Female NPT

Outlet: 1/2" Female NPT

Bypass: 1/2" Female NPT


Unloader valves are one of the most important safety devices on a pressure washer system. It is recommended that an experienced mechanic installs the unloader and sets the operating and spike pressure properly with a pressure gauge.

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.