Combo Pressure Valves

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 -


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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! (15 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! (65 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! (36 Available) Ships in 24-48 Hrs
  • 1/2" Combo Backflow Preventer & Boiler Fill Valve (Cast Iron) View Specs

    $125.95 / each

    In Stock! (12 Available) Ships in 24-48 Hrs
  • 1/2" FM911 Backflow Preventer & Boiler Fill Valve Assembly (Threaded) View Specs

    $73.95 / each

    $279.80 / box
    4 x $69.95

    In Stock! (8 Available) Ships in 24-48 Hrs
  • 1/2" 573 Backflow Preventer and AutoFill Combination (Threaded) View Specs

    $103.95 / each

    $299.85 / box
    3 x $99.95

    In Stock! (47 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

    In Stock! (16 Available) Ships in 24-48 Hrs
  • 1/2" 573 Backflow Preventer and AutoFill Combination w/ Pressure Gauge (Threaded) View Specs

    $122.95 / each

    In Stock! (16 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! (90 Available) Ships in 24-48 Hrs
  • F-3 Dual Unit Valve w/ Fast Fill (Lead Free) View Specs
    • SKU: 110197LF
    • Brand: Bell & Gossett

    $119.95 / each

    $463.80 / box
    4 x $115.95

    In Stock! (161 Available) Ships in 24-48 Hrs
  • F-3TU Dual Unit Pressure Reducing Valve w/ Fast Fill Feature (Lead Free) View Specs

    $127.95 / each

    In Stock! (33 Available) Ships in 24-48 Hrs
  • Model 8 Dual Unit Pressure Reducing Valve (Lead Free) View Specs
    • SKU: 110199LF
    • Brand: Bell & Gossett

    $86.95 / each

    In Stock! (12 Available) Ships in 24-48 Hrs
  • Taco Dual Unit Valve (Threaded) View Specs
    • SKU: 334-T3
    • Brand: Taco

    $90.00 / each

    $540.00 / box
    6 x $90.00

    In Stock! (589 Available) Ships in 24-48 Hrs
  • Taco Cast Iron Pressure Reducing Valve, Dual Control (Sweat) View Specs

    $92.95 / each

    $360.60 / box
    4 x $90.15

    In Stock! (3 Available) Ships in 24-48 Hrs
  • 1/2" 1450F Pressure Regulator & Relief Combo (Threaded) View Specs

    $64.95 / each

    Non-Stock Item Allow 5-7 Days to Ship Out
  • 1/2" S1450F Pressure Regulator & Relief Combo (Sweat) View Specs

    $84.95 / each

    Non-Stock Item Allow 7-10 Days to Ship Out
  • 1/2" T1450F Pressure Regulator & Relief Combo (Union Threaded) View Specs

    $64.95 / each

    In Stock! (6 Available) Ships in 24-48 Hrs

More About Combo Pressure Valves

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.