OV-Series Hydraulic Bypass Relief Valves

  • API 520 & 614 Approved
  • 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

The OV-Series valve is a “Relief Valve” (RV) in a sense that the outlet pressure doesn’t affect the valve’s set pressure. The valves operate off the inlet pressures only. The OV-Series valve is to be used when you don’t want the backpressure to affect the valve’s opening pressure.

Choose your Fulflo OV‐Series Valve type for more information

OV Standard with Threaded Connections

Fulflo OV-Series Hydraulic Bypass Relief Valves

OV Standard Flange

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