Marlon Backing Plates

  • Marlon Backing Plates


    This page description is for Marlon - Forespar & Trudesign thruhull / valve backing plates. See menu option for both Groco and Buck Algonquin Flange Valve line and thru hull backing plates.

    We manufacture these in house with 1/2 inch thick Extren 525 fiberglass. We have stock available for Marlon, Groco, Trudesign and Buck Algonquin valve and thruhulls.  Buck Algonquin and Groco valves use the same size and bolt pattern backing plates. We cut and drill these on a cnc router. 

    Extren 525, see Strongwell.com is water proof, fire proof, mass produced polyester fiberglass sheet. Epoxy, Polyester and Vinyl ester resins will bond to it. 30.000 PSI compression and tensile strength.

    The Seacocks and thruhulls can be purchased from West Marine and Defender.com and many others.

    Install as a dry fit first. If the backing plate needs to be sanded to fit the curvature of the hull, orientate the valve correctly first and mark off the correct section to sand with very course sand paper or file. A belt sander works well.

    Product Name Fits Marlon Seacock Series 93, no flange so no bolts
    		 OD ID
    MA93 – 1 1/2", 3/4" 4.125" 1.1"
    MA93 – 2 1.0", 1.25" 4.75" 1.6"
    MA93 – 3 1.5” , 2.0” 5.25” 2.125”

    The Marlon 849 Series 1/2" and 3/4" backing plate holes are tapped with 1/4"-20 threads.
    The 1.5" plates are tapped for 5/16 - 18 threads.
     
    Product Name Fits Marlon Seacock Series 849
    		 OD ID
    MA849 – 1 1/2"
    		 4.5" 0.825"
    MA849 – 2 0.75"
    		 4.25" 1.03"
    MA849 – 3 1.5” 6.875" 1.86”

    Order here or call us to order at 304 723-4553

     



    Marlon 93 Series with no holes

    Marlon 849 Series

  • Merimarine

    Welcome to MeriMarine custom boat parts including the Capt. Don Boom Brakes, Dolphin Cleats, custom made sheaves and anchor rollers, custom cut fiberglass sheet and other items since 2012.

    Contact us to order.

    Thank you
    Capt. Don & Sharon

    F&C44

    Follow the links below for more information.