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 - Fill Valve & Backflow Preventer Combination


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

    $102.95 / each

    $496.75 / box
    5 x $99.35

    In Stock! (12 Available) Ships in 24-48 Hrs
  • 1/2" 9-11S M3 (Combination 1156 - 9D (Sweat) View Specs

    $102.95 / each

    $496.75 / box
    5 x $99.35

    In Stock! (11 Available) Ships in 24-48 Hrs
  • B911S, 1/2" Bronze Combination Fill Valve & Backflow Preventer, Sweat View Specs

    $72.95 / each

    $351.75 / box
    5 x $70.35

    In Stock! (57 Available) Ships in 24-48 Hrs
  • B911, 1/2" Bronze Combination Fill Valve & Backflow Preventer, Threaded View Specs

    $72.95 / each

    $351.75 / box
    5 x $70.35

    In Stock! (41 Available) Ships in 24-48 Hrs
  • 1/2" Combo Backflow Preventer & Boiler Fill Valve (Cast Iron) View Specs

    $117.95 / each

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

    $125.95 / each

    Non-Stock Item Allow 7-10 Days to Ship Out
  • 1/2" 573 Backflow Preventer and AutoFill Combination (Threaded) View Specs

    $103.95 / each

    $299.85 / box
    3 x $99.95

    In Stock! (48 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! (30 Available) Ships in 24-48 Hrs