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Brass, Cast Iron, Stainless Steel valves with threaded or flanged connection

The Fulflo FV-Series is similar to the V-Series, but with a design that prevents liquid and gas venting during normal operation and adjustment conditions.

This safety feature is specially designed to prevent the adjusting screw from backing out while making adjustments to the pressure setting.


The FV-Series ranges in size from 3/8” through 2” and operates efficiently with liquids of any viscosity at pressures from 3 to 1000 psi. FV-Series valves are available with threaded and flanged connections in a choice of Brass, Cast Iron, Steel, and Stainless Steel.


  • Chatter-free operation
  • Mount in any position
  • Suitable for continuous duty
  • Specially designed to prevent venting of liquids and gasses during normal operations and adjustments
  • Size Range: 3/8″– 2″
  • Pressures: 2 – 1000 psi
  • Flow Rate: Up to 150 gpm
  • Connections: Threaded, Flange
  • Materials: Brass, Cast Iron, Stainless Steel
  • Applications: Load regulation and system protection for hydraulic and lubricating systems