Fuel Demand Valves

Overview

The Perko Fuel Demand Valve is a diaphragm operated valve opening at low vacuum regardless of tank pressure. The valve is available in both flanged and threaded versions.

  • Pressure release button - No tools needed to pressurize engine feed line during pressure test. Easy button removal to provide visual indication of test completion.

  • Anti-siphon Protection - For line drops of 12" maximum. Custom drop distances available.

  • Handles high tank pressure - Seals to pressures in excess of 5psi.

  • Opens at low vacuum - Valve opens at minus 3/4 psi (approx) regardless of internal tank pressure.


  • Flanged Fuel Demand Valves

    • Aluminum housing and barbs
    • Viton seals
    • Max Flow Rate - Up to 88 gal/hr.
    • SAE Bolt Circle - Bolts & gaskets are common with flanged level senders. Easy to tool & install for tank builders.
    • Swivel head - Eliminates clocking issues and facilitates boat builder plumbing.
    • Meets A.B.Y.C. H-24 Fire Test

    Technical Information

    • Length (Inches): 2-1/4"
    • Width (Inches): 3-3/4"
    • Projection Above Tank (Inches): 1-1/4"
    • Tank Connection: SAE 5 Bolt
    Catalog No. Hose Connections Inches Shipping Weight Lbs.
    0463F38038 3/8 3.0
    0463F12012 1/2 3.0
  • Threaded Fuel Demand Valves

    • Aluminum housing and barbs
    • Viton seals
    • Max Flow Rate - Up to 88 gal/hr.
    • Low profile - 1" NPTF tank connection
    • Easy to install. Receiver not included.
    • Meets A.B.Y.C. H-24 Fire Test

    Technical Information

    • Length (Inches): 2-1/4"
    • Width (Inches): 3-3/4"
    • Projection Above Tank (Inches): 1-1/4"
    • Tank Connection: 1" NPTF
    Catalog No. Hose Connections Inches Shipping Weight Lbs.
    0463T38038 3/8 3.0
    0463T12012 1/2 3.0
  • 1/2" NPTF Fuel Demand Valve

    • Aluminum housing and barbs
    • Viton seals
    • Max Flow Rate - Up to 88 gal/hr.
    • Small tank footprint - 1/2" NPTF tank connection
    • Easy to install. Receiver not included.
    • Meets A.B.Y.C. H-24 Fire Test

    Technical Information

    • Length (Inches): 3-1/2"
    • Width (Inches): 3-3/4"
    • Projection Above Tank (Inches): 2-1/2"
    • Tank Connection: 1/2" NPTF
    Catalog No. Hose Connections Inches Shipping Weight Lbs.
    0463H38038 3/8 3.0
    0463H12012 1/2 3.0