CAT Pumps Unloader Brass, Model 7691, Min. Flow 2.5 GPM-Max. Flow 8 GPM, Min Pressure 1000 PSI-Max. Pressure 4050 PSI

Model: 7691 ~ Call For Pricing

This Pressure Regulating Unloader is designed for single gun or pump operation. This unloader maintains set system pressure and goes into by-pass with the release of the trigger or an obstruction downstream. The pressure sensitive feature permits a wide range of flows and quickly resumes full pressure when the gun is opened or the obstruction cleared. It is recommended for intermittent cleaning applications. It is NOT recommended for weep systems. 5-10% by-pass is necessary for optimum performance. This model has a built-in quick start valve to relieve pump discharge line pressure.


  • Provides system pressure setting and protection for single gun (non-weep) and pump installation.
  • Compact size with optional ports for easy installation.
  • Pressure sensitive feature permits wide range of flows and immediate pressure when gun opens.
  • Color coded spring for easy identification and simple change from one model to another.
  • Model 7691 has a quick start valve to relieve pump discharge line pressure at start up.


Technical Specifications
Max Flow 8 gpm / 30 lpm
Min Flow 2.5 gpm / 9.5 lpm
Max Pressure 4050 psi
Inlet Port Size 3/8″ NPT(F)
Discharge Port Size 3/8″ NPT(F)
Accessory Type Unloaders
Material Brass
By-Pass Port 3/8″ NPT(F)


CAT Unloader Model 7691 Data Sheet


Cat Pumps Limited Warranty