Interpump K5.3 Flow Sensitive Unloader Valve – 200 Bar, 25–41 LPM, 3/8" Inlet, 1/2" Outlet

Interpump K5.3 Flow Sensitive Unloader Valve – 200 Bar, 25–41 LPM, 3/8" Inlet, 1/2" OutletThe Interpump K5. 3 is a high capacity flow sensitive unloader valve designed for professional and industrial pressure washer systems. It ensures smooth system regulation by automatically diverting water flow through the bypass circuit when the spray gun is released, protecting the pump and minimising recoil. Suitable for systems operating up to 200 Bar and delivering flow rates between 25 and 41 litres per minute, the K5. 3 is ideal for heavy duty

The Interpump K5.3 is a high-capacity flow sensitive unloader valve designed for professional and industrial pressure washer systems. It ensures smooth system regulation by automatically diverting water flow through the bypass circuit when the spray gun is released, protecting the pump and minimising recoil.

Suitable for systems operating up to 200 Bar and delivering flow rates between 25 and 41 litres per minute, the K5.3 is ideal for heavy-duty use in construction, transport, and agricultural cleaning. Built with a brass body and stainless steel internals, this valve offers robust durability and reliable performance over long service intervals.

Fitted with a 3/8" BSP female inlet, 1/2" BSP male outlet, and a dual-threaded bypass port (3/4" male + 1/2" female BSP) for flexible hose connection. The valve also includes 1/4" BSPF gauge ports to allow accurate pressure monitoring. A 40 Bar minimum working pressure is required for correct function.