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Cast Iron, Cast Steel, Stainless Steel valves with threaded or flange connection

The Fulflo A-Series offers both Direct Acting and Internal Pilot operated models in a choice of threaded or flanged connections.

Threaded models are available in 2.5″ and 3″ sizes, while the flanged model comes in 2.5″, 3″ and 4″.


Direct Acting models operate efficiently with liquids of any viscosity at pressures up to 150 psi; the Internal Pilot handle pressures up to 500 psi. A-Series valves are available in a choice of Cast Iron, Cast Steel, and Stainless Steel (material availability may vary by model).


  • Chatter‐free operation
  • Mount in any position
  • Suitable for continuous duty
  • Size Range: 2.5″ – 4″
  • Pressures: Up To 500 psi
  • Flow Rate: 150-600 gpm
  • Connections: Threaded, Flange
  • Materials: Cast Iron, Cast Steel, Stainless Steel
  • Applications: Load regulation system protection for hydraulic and lubricating systems