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The Interpump HM Unloader Valve Specification:
- 3000 psi Max. Pressure
- 1.3 to 10.8 gpm Max. Flow
- 195° F Max. Temperature
- 3/8" BSP-F Inlet
- 3/8" BSP-M & 1/4" BSP-F Outlet
- 3/8" BSP-F Bypass (x2)
Per GENERAL PUMP, BSP threads can be used as NPT
Ideal for use in systems which incorporate a gasoline engine; eliminates back pressure in system when pulling a manual start engine. Features brass and stainless steel construction, and a plastic adjustable pressure control knob