Inlet Check Valves

Overview

ICVs are used to help prevent wellback (the reverse flow of fuel out the fill after refueling is completed) & spitback. These normally closed valves are opened by the presence of fuel running down the fill pipe during refueling. All Perko inlet check valves are designed to handle incoming fuel flows in excess of 18 gallons per minute. Inlet check valves can be tank mounted or inserted into the fill pipe. Mounting options for tank mounted ICVs include flanged (for plastic tanks), threaded or welded (for metal tanks) and swivel (for both plastic and metal tanks)

  • Gasket not included on flanged valves.

  • Threaded valves mount with a 1½" NPTF thread.

  • Swivel valves include valve, valve housing, o-ring, snap ring and tank insert.

  • Custom ICVs are also available for specialized applications


  • Special Application Flapper Valve Fill Pipe Insert Check Valves

    • White polymer valve with black polymer flapper.
    • Valve designed for use with plastic or metal tanks.
    • Perko's new patent pending "In-Pipe ICV" fits inside the fuel pipe itself.
    • In-pipe ICVs mount inside standard 1-1/2" fill pipes near the connection of the fuel tank.
    • Eliminates the need to retool existing doghouse on plastic tanks.
    • Replaces in-line ICVs, eliminating 4 hose clamps & 2 leak points.
    • Allows for full 18 gpm flow rates.

    Technical Information

    • Length - 1-1/4"
    • Fire Test Capable - Yes
    Catalog No. Hose Connection Width Inches Dealer Pkg. OEM Bulk Pkg. Shipping Weight Lbs.
    0635DP0 1-1/2 1-9/16 Dia. 5 --- 0.6
    0635000 1-1/2 1-9/16 Dia. --- 25 2.0
    0635DP2 (for Diesel) 2 1-15/16 Dia. 5 --- 1.0
    0635002 (for Diesel) 2 1-15/16 Dia. --- 25 2.5


  • Special Application Inlet Check Valve for Fuel Tank Inlet Fittings

    • White polymer valve with black polymer flapper.
    • Valve designed for use with plastic or metal tanks.
    • Recommended for use with gasoline systems.
    • Perko's new patent pending "In-Pipe ICV" fits inside the fuel pipe itself.
    • Replaces in-line ICVs, eliminating 4 hose clamps & 2 leak points.
    • Allows for full 18 gpm flow rates.

    Technical Information

    • ICVs mount inside standard 1-1/2" tank fill inlet fittings (1-3/8" I.D.)
    • Allows for full 18 gpm flow rates
    Hose Connection Length Inches Width Inches Fire Test Capable Dealer Pkg. 5 Pcs. OEM Bulk Pkg. 25 Pcs. Shipping Weight Lbs. DP/OEM Bulk
    1-1/2 7/8 1-1/2 Dia. Yes 0636DP0 0636000 0.4/1.5
  • Special Application Inlet Check Valves

    • Machined Aluminum
    • White Polymer Valve
    • Valves designed for mounting on aluminum tanks
    • Mounting options - Welded or 1-1/2" NPTF Threaded
    • Aluminum tank ICVs can be factory cut to 22-1/2° or 45° angles so that the tank builder can form & weld 45° and 90° angles.

    Technical Information

    • Hose Connection: 1-1/2"
    • Fire Test Capable: Yes
    Catalog No. Style Length Inches Width inches OEM Bulk Pkg Shipping Weight
    0584SPL001 0° Inline Valve 6-3/4" 1-5/8" Dia. 25 12.0 lbs.
    0584SPL004 45° Inline Valve 3-3/4" 4-3/8" Dia. 50 21.5 lbs.
  • 1-1/2" NPTF Threaded Inlet Check Valve

    • Machined or Cast Aluminum
    • White Polymer Valve
    • For mounting on aluminum tanks
    • Available with 0°, 45° or 90° hose barb connection

    Technical Information

    • Hose Connection: 1-1/2"
    • Mounting Hole Diameter: 1-1/2" NPTF
    • Collar: No
    • Fire Test Capable: Yes
    Catalog No. Angle/Port Length Inches Width Inches Projection Inches Shipping Weight
    0584T90 90° 4 2-3/4" 2-1/16" 13.6 lbs.
    0584T45 45° 4 2-1/2" 2-1/16" 11.2 lbs.
    0584T00 2-1/16" 1-29/32" 2" 4.8 lbs.
  • Swivel Inlet Check Valve

    • Machined or Cast Aluminum
    • White Polymer Valve
    • For mounting on aluminum tanks
    • Available with 0°, 45° or 90° hose barb connection
    • Swivel valves include valve, valve housing, o-ring, snap ring and tank insert.

    Technical Information

    • Hose Connection: 1-1/2"
    • Width Inches: 2-3/4"
    • Mounting Hole Diameter: 2-1/4"
    • Collar: Yes
    • Fire Test Capable: Yes
    Catalog No. Angle/Port Length Inches Projection Inches Shipping Weight
    0584S9000A 90° 4-7/8 2-5/16 9.6 lbs.
    0584S4500A 45° 6 3-7/16 8.2 lbs.
    0584S0000A 5-1/4 2-11/16 7.6 lbs.
  • Flanged Inlet Check Valve

    • Machined or Cast Aluminum
    • White Polymer Valve
    • For mounting on plastic or aluminum tanks
    • Gasket not included
    • Available with 0°, 45° or 90° hose barb connection

    Technical Information

    • Hose Connection: 1-1/2"
    • Width Inches: 4-3/8"
    • Mounting Hole Diameter: 3"
    • Collar: No
    • Fire Test Capable: Yes
    Catalog No. Angle/Port Length Inches Projection Inches Shipping Weight
    0584F90 90° 3-27/32 2 11.0 lbs.
    0584F45 45° 4-31/32 3-1/8 10.0 lbs.
    0584F00 4-27/32 2-3/8 9.2 lbs.