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General Pump ZK73 Flow Sensitive Unloader, 3500 PSI, 6.6 - 10.8 GPM

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4.66 lbs
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Unloading valve featuring a flow-through design, protecting your system from overpressure. Stainless and brass internal parts. 6.6 to 10.8 GPM, maximum discharge pressure of 3500 PSI.

Technical Specifications

Min GPM: 6.6
Max GPM: 10.8
Inlet Port: 3/8 inch
Bypass Port: 3/8 inch
Outlet Port: 3/8 inch
Max Temperature: 165 degrees F
Max PSI: 3500

Product Description

General Pump Flow Sensitive Unloader

The General Pump ZK73 flow sensitive unloader features a flow-through design, protecting your system from overpressure and spikes. Stainless and brass internal parts for durability, no external moving parts or springs for ease of use and reliability. Eliminates high pressure in all lines while unit is in bypass mode. Unique balanced piston design permits precise pressure adjustment. Easy to maintain and service! Best for single pump or Non weep guns.

Valves require a minimum of 5% by-pass at ALL times.

Dimensions: 4.5" x 3.75" x 3.5"


  • Volume Range: 6.6GPM - 10.8GPM
  • Maximum Pressure: 3500 PSI
  • Inlet Port: 3/8" BSP-F
  • Bypass Port 3/8" BSP-M
  • Outlet Port: 3/8"BSP-F
  • Max Temperature: 165°F

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