Fill Valve & Backflow Preventer Combination

This category contains fill valve and backflow preventer combinations. These valves are designed to provide make-up water to the boiler and prevent backflow when supply pressure falls below system pressure.

Manuals -


12 products shown

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  • 1/2" 9-11TM3 (Combination 1156F - 9D (Threaded) View Specs

    $109.95 / each

    $529.75 / box
    5 x $105.95

    In Stock! (19 Available) Ships in 24-48 Hrs
  • 1/2" 9-11S M3 (Combination 1156 - 9D (Sweat) View Specs

    $109.95 / each

    $529.75 / box
    5 x $105.95

    In Stock! (16 Available) Ships in 24-48 Hrs
  • B911S, 1/2" Bronze Combination Fill Valve & Backflow Preventer, Sweat View Specs

    $74.95 / each

    $359.75 / box
    5 x $71.95

    In Stock! (92 Available) Ships in 24-48 Hrs
  • B911, 1/2" Bronze Combination Fill Valve & Backflow Preventer, Threaded View Specs

    $74.95 / each

    $359.75 / box
    5 x $71.95

    In Stock! (92 Available) Ships in 24-48 Hrs
  • 1/2" Combo Backflow Preventer & Boiler Fill Valve (Cast Iron) View Specs

    $132.95 / each

    In Stock at Supplier! (4 Available) Ships in 2-3 Days
  • 1/2" FM911 Backflow Preventer & Boiler Fill Valve Assembly (Threaded) View Specs

    $73.95 / each

    $279.80 / box
    4 x $69.95

    In Stock! (15 Available) Ships in 24-48 Hrs
  • 1/2" 573 Backflow Preventer and AutoFill Combination w/ Pressure Gauge (Threaded) View Specs

    $122.95 / each

    $353.85 / box
    3 x $117.95

    In Stock! (6 Available) Ships in 24-48 Hrs
  • 1/2" 573 Sweat Inlet x 1/2" NPT Outlet 573 Backflow Preventer & AutoFill Combination w/ Pressure Gauge View Specs

    $116.95 / each

    $338.85 / box
    3 x $112.95

    In Stock! (6 Available) Ships in 24-48 Hrs
  • 1/2" 573 Backflow Preventer and AutoFill Combination (Threaded) View Specs

    $106.95 / each

    $308.85 / box
    3 x $102.95

    In Stock! (36 Available) Ships in 24-48 Hrs
  • 1/2" 573 Backflow Preventer and AutoFill Combination (Sweat) View Specs

    $99.95 / each

    $287.85 / box
    3 x $95.95

    In Stock! (49 Available) Ships in 24-48 Hrs
  • 1/2" Combination Boiler Feed Valve & Backflow (Sweat) View Specs

    $88.95 / each

    In Stock at Supplier! (2 Available) Ships in 2-3 Days
  • 1/2" Combination Boiler Feed Valve & Backflow (Threaded) View Specs

    $89.95 / each

    Non-Stock Item Allow 2-3 Weeks to Ship Out