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Fulflo OV series valves with screw or flange connection

Fulflo’s OV-Series is designed for special applications where variable back pressure is a problem.

The OV-Series ranges in size from 1/2” through 2” and operates efficiently with liquids of any viscosity at pressures from 10 to 500 psi. OV-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
  • Size Range: 1/2″ – 2″
  • Pressures: 10 – 500 psi
  • Flow Rate: Up to 150 gpm
  • Connections: Threaded, Flange
  • Materials: Brass, Cast Iron, Cast Steel, Stainless Steel
  • Applications: Load regulation and system protection for hydraulic and lubricating systems