General Pump / Interpump K3 / (ZK3 GP) flow activated unloader valve.
1500psi Maximum Rated Pressure
- 3/8" Inlet / Outlet
- 3/4" Male Bypass with 1/2" Female inner thread
- 165°F max temperature
- Z-K3.0 - 2 to 3gpm
- Z-K3.1 - 3 to 4.2gpm
- Z-K3.2 - 4.2 to 5.5gpm
- Z-K3.3 - 5.0 to 6.0gpm
Always choose the best match for your pump GPM. As a rule, if there is any question on which unloader to select in border line cases, select the lower GPM rating of the two.
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.