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.

10 products shown

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

    $96.95 / each

    $467.75 / box
    5 x $93.55

    In Stock! (14 Available) Ships in 24-48 Hrs
  • 1/2" 9-11S M3 (Combination 1156 - 9D (Sweat) View Specs

    $101.95 / each

    $491.75 / box
    5 x $98.35

    In Stock! (5 Available) Ships in 24-48 Hrs
  • B911S, 1/2" Bronze Combination Fill Valve & Backflow Preventer, Sweat View Specs

    $70.95 / each

    $342.25 / box
    5 x $68.45

    In Stock! (74 Available) Ships in 24-48 Hrs
  • B911, 1/2" Bronze Combination Fill Valve & Backflow Preventer, Threaded View Specs

    $70.95 / each

    $342.25 / box
    5 x $68.45

    In Stock! (40 Available) Ships in 24-48 Hrs
  • 1/2" Combo Backflow Preventer & Boiler Fill Valve (Cast Iron) View Specs

    $117.95 / each

    Non-Stock Item Allow 7-10 Days to Ship Out
  • 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" FM911 Backflow Preventer & Boiler Fill Valve Assembly (Threaded) View Specs

    $73.95 / each

    $279.80 / box
    4 x $69.95

    In Stock! (23 Available) Ships in 24-48 Hrs
  • 1/2" DialSet Backflow Preventer & Boiler Fill Valve Assembly (Threaded) View Specs

    $52.65 / each

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

    $101.95 / each

    $295.05 / box
    3 x $98.35

    In Stock! (32 Available) Ships in 24-48 Hrs
  • 1/2" 573 Backflow Preventer and AutoFill Combination (Sweat) View Specs

    $101.95 / each

    $295.05 / box
    3 x $98.35

    In Stock! (42 Available) Ships in 24-48 Hrs