ZK1 Flow Sensitive Unloader 10.8 GPM 3600 PSI 1/2" BSP Male Outlet pressure washer plumbing and even hose add to

and even hose add to the restriction within the system and may affect or eliminate the suction capabilities

Check out this upgraded kit

Oil bath lubrication combined with premium quality

add 2 quarts or 1/2 gallon of Hang Tite (4 to 8 ounces or less of Slo Mo Softwash surfactant)

ZK1 Flow Sensitive Unloader 10.8 GPM 3600 PSI 1/2" BSP Male Outlet pressure washer plumbing and even hose add toZK1 Flow Sensitive unloader 10. 8 gpm 3600 psi 1 2" BSP M out. The General Pumps newest flow sensitive or flow actuated unloader, the ZK1, is rated for a maximum volume of 10. 8 GPM and a discharge pressure of 3600 psi. This unloader also offers a compact design and can be rebuilt from the top without disturbing surrounding plumbing. The ZK1 is a soft start unloader offering gradual pressure increases, assuring safety for the operator and the pump.