Shop Backflow Preventer for Pool Auto Fill

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$49.99
Pentair T29 Fluidmaster Autofill Float Valve RP-402
Vita Pool Supply
144
$49.99
Pentair T29 Fluidmaster Autofill Float Valve RP-402
Vita Pool Supply
144
$179.99
Pentair T40FBK Black Autofill With Fluidmaster Valve
Vita Pool Supply
1
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Pentair T40FBK Black Autofill With Fluidmaster Valve
Vita Pool Supply
1
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2026 Upgrade Automatic Pool Filler, Pool Water Leveler Auto Fill, Pool Auto Fill Float Valve, Water Leveler Control Sentry, Swimming Pool, Spa, Pond
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2026 Upgrade Automatic Pool Filler, Pool Water Leveler Auto Fill, Pool Auto Fill Float Valve, Water Leveler Control Sentry, Swimming Pool, Spa, Pond
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Watts LF288A 3/8" Lead-Free Brass Anti-Siphon Vacuum Breaker Backflow Preventer, Female NPT Inlet And Outlet, Silicone Disc Seat, Chrome Hood,
Amazon.com
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Watts LF288A 3/8" Lead-Free Brass Anti-Siphon Vacuum Breaker Backflow Preventer, Female NPT Inlet And Outlet, Silicone Disc Seat, Chrome Hood,
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$207.74
Caleffi 573006A 1/2" 573 Backflow Preventer And Autofill Combination (Press X Press) | Supplyhouse.Com
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Caleffi 573006A 1/2" 573 Backflow Preventer And Autofill Combination (Press X Press) | Supplyhouse.Com
SupplyHouse.com
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Watts 0386473 B911T-M3 1/2" Combination Fill Valve And Backflow Preventer With Press Adapters
WebstaurantStore
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Watts 0386473 B911T-M3 1/2" Combination Fill Valve And Backflow Preventer With Press Adapters
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Caleffi 573002A 1/2" 573 Backflow Preventer And Autofill Combination (NPT X NPT) | Supplyhouse.Com
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Caleffi 573002A 1/2" 573 Backflow Preventer And Autofill Combination (NPT X NPT) | Supplyhouse.Com
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$224.10
Caleffi 573016A 1/2" 573 Backflow Preventer And Autofill Combination W/ Pressure Gauge (Press X Press) | Supplyhouse.Com
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Caleffi 573016A 1/2" 573 Backflow Preventer And Autofill Combination W/ Pressure Gauge (Press X Press) | Supplyhouse.Com
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Caleffi 573009A 1/2" 573 Backflow Preventer And Autofill Combination (Sweat X NPT) | Supplyhouse.Com
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Caleffi 573009A 1/2" 573 Backflow Preventer And Autofill Combination (Sweat X NPT) | Supplyhouse.Com
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Watts 0386463 B911T-M3 1/2" Union FNPT X FNPT Combination Fill Valve And Backflow Preventer
WebstaurantStore
28
46% off
$284.79
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Watts 0386463 B911T-M3 1/2" Union FNPT X FNPT Combination Fill Valve And Backflow Preventer
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$197.48
Caleffi 573012A 1/2" 573 Backflow Preventer And Autofill Combination W/ Pressure Gauge (NPT X NPT) | Supplyhouse.Com
SupplyHouse.com
10
$197.48
Caleffi 573012A 1/2" 573 Backflow Preventer And Autofill Combination W/ Pressure Gauge (NPT X NPT) | Supplyhouse.Com
SupplyHouse.com
10
$248.83
Watts 800M4FR Series 1" Bronze Freeze-Resistant Pressure Backflow Preventer Assembly, Quarter Turn Shutoff, Tee Handles, Freeze Sensor With Sentryplus
Amazon.com
Free shipping
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Watts 800M4FR Series 1" Bronze Freeze-Resistant Pressure Backflow Preventer Assembly, Quarter Turn Shutoff, Tee Handles, Freeze Sensor With Sentryplus
Amazon.com
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$130.62
$140.00
Febco 765 Series 1" Bronze Pressure Vacuum Breaker Backflow Preventer, Quarter Turn Shutoff, NPT Connections, Freeze Sensor With Sentryplus Alert
Amazon.com
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Free shipping
$130.62
$140.00
Febco 765 Series 1" Bronze Pressure Vacuum Breaker Backflow Preventer, Quarter Turn Shutoff, NPT Connections, Freeze Sensor With Sentryplus Alert
Amazon.com
5
$210.33
Zurn Wilkins 34-350 3/4" 350 Double Check Backflow Preventer
Amazon.com
70
Free shipping
$210.33
Zurn Wilkins 34-350 3/4" 350 Double Check Backflow Preventer
Amazon.com
70
$49.99
Fluidmaster Autofill Float Valve (Poolmiser, Inc. - Rp-402)
eBay
$49.99
Fluidmaster Autofill Float Valve (Poolmiser, Inc. - Rp-402)
eBay
$193.11
Caleffi 573019A 1/2" 573 Backflow Preventer & Autofill Combination W/ Pressure Gauge (Sweat X NPT) | Supplyhouse.Com
SupplyHouse.com
6
$193.11
Caleffi 573019A 1/2" 573 Backflow Preventer & Autofill Combination W/ Pressure Gauge (Sweat X NPT) | Supplyhouse.Com
SupplyHouse.com
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$269.85
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Watts LF007 Series 3/4" Lead-Free Copper Silicon Alloy Double Check Valve Backflow Preventer Assembly, Quarter Turn Shutoff, Single Top Entry, NPT
Amazon.com
1
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Watts LF007 Series 3/4" Lead-Free Copper Silicon Alloy Double Check Valve Backflow Preventer Assembly, Quarter Turn Shutoff, Single Top Entry, NPT
Amazon.com
1
$73.44
Watts LF288A 1/2" Lead-Free Brass Anti-Siphon Vacuum Breaker Backflow Preventer, Female NPT Inlet And Outlet, Silicone Disc Seat, Chrome Hood,
Amazon.com
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Free shipping
$73.44
Watts LF288A 1/2" Lead-Free Brass Anti-Siphon Vacuum Breaker Backflow Preventer, Female NPT Inlet And Outlet, Silicone Disc Seat, Chrome Hood,
Amazon.com
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$182.29
Caleffi 573007A 1/2" 573 Backflow Preventer And Autofill Combination (Press X NPT) | Supplyhouse.Com
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Caleffi 573007A 1/2" 573 Backflow Preventer And Autofill Combination (Press X NPT) | Supplyhouse.Com
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Cinsda 3" PVC Backwater Valve, 3 Inch Back Flow Preventer Valve, Backflow Water Valve Prevents Sewage Backflow
Amazon.com
22
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Cinsda 3" PVC Backwater Valve, 3 Inch Back Flow Preventer Valve, Backflow Water Valve Prevents Sewage Backflow
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$173.82
Caleffi 573017A 1/2" 573 Backflow Preventer And Autofill Combination W/ Pressure Gauge (Press X NPT) | Supplyhouse.Com
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Caleffi 573017A 1/2" 573 Backflow Preventer And Autofill Combination W/ Pressure Gauge (Press X NPT) | Supplyhouse.Com
SupplyHouse.com
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Watts 0386462 B911S-M3 1/2" Solder X FNPT Combination Fill Valve And Backflow Preventer
WebstaurantStore
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Watts 0386462 B911S-M3 1/2" Solder X FNPT Combination Fill Valve And Backflow Preventer
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Zurn Wilkins 1-350 1" 350 Double Check Backflow Preventer
Amazon.com
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Zurn Wilkins 1-350 1" 350 Double Check Backflow Preventer
Amazon.com
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Watts 88004110 LF009-QT-FS 1/2" Lead-Free Reduced Pressure Zone Backflow Preventer Assembly With Flood Sensor
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Watts 88004110 LF009-QT-FS 1/2" Lead-Free Reduced Pressure Zone Backflow Preventer Assembly With Flood Sensor
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Caleffi 573009A 1/2 Sweat Inlet X 1/2 F NTP Outlet Backflow Preventer And Autofill Combination
Craft Supply
9
$142.27
Caleffi 573009A 1/2 Sweat Inlet X 1/2 F NTP Outlet Backflow Preventer And Autofill Combination
Craft Supply
9
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Zurn Wilkins 2-375XL 2" 375XL Reduced Pressure Principle Backflow Preventer
Amazon.com
123
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Zurn Wilkins 2-375XL 2" 375XL Reduced Pressure Principle Backflow Preventer
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Watts 9D Series 3/4" Brass Dual Check Valve Backflow Preventer, Union Female NPT Inlet X Female NPT Outlet, Intermediate Atmospheric Vent, Compact
Amazon.com
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Watts 9D Series 3/4" Brass Dual Check Valve Backflow Preventer, Union Female NPT Inlet X Female NPT Outlet, Intermediate Atmospheric Vent, Compact
Amazon.com
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$179.99
Pentair T40BW White Autofill With Side Mounted Float Valve
Vita Pool Supply
9
$179.99
Pentair T40BW White Autofill With Side Mounted Float Valve
Vita Pool Supply
9
$169.29
Febco 765 Series 3/4" Bronze Pressure Vacuum Breaker Backflow Preventer, Quarter Turn Shutoff, NPT Connections, Freeze Sensor With Sentryplus Alert
Amazon.com
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Febco 765 Series 3/4" Bronze Pressure Vacuum Breaker Backflow Preventer, Quarter Turn Shutoff, NPT Connections, Freeze Sensor With Sentryplus Alert
Amazon.com
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CALEFFI, Autofill Backflow Preventer, 1/2 NPT,-, Prevents Contaminated Water Backflow, For Heating And Hydronic Systems
Voomi Supply
$173.91
CALEFFI, Autofill Backflow Preventer, 1/2 NPT,-, Prevents Contaminated Water Backflow, For Heating And Hydronic Systems
Voomi Supply
$94.97
$108.89
Watts LF288A Series 3/4" Lead-Free Brass Anti-Siphon Vacuum Breaker Backflow Preventer, Female NPT Inlet And Outlet, Silicone Disc Seat, Chrome Hood,
Amazon.com
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Watts LF288A Series 3/4" Lead-Free Brass Anti-Siphon Vacuum Breaker Backflow Preventer, Female NPT Inlet And Outlet, Silicone Disc Seat, Chrome Hood,
Amazon.com
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$186.89
Pentair T40fg Autofill Water Filler Valve Gray Replacement Fluidmaster
eBay
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Pentair T40fg Autofill Water Filler Valve Gray Replacement Fluidmaster
eBay
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$187.84
Caleffi 573006A Backflow Preventor 1/2"-Inlet 1/2"-Outlet W/Autofill
Parts HNC
$187.84
Caleffi 573006A Backflow Preventor 1/2"-Inlet 1/2"-Outlet W/Autofill
Parts HNC
$271.23
$305.29
WATTS Backflow Preventer - 1/2" Bronze Combination Fill Valve & Backflow Prevention, NPT Threaded, 100 PSI, 212°F (MPN: 386463)
PlumbingSupplyandMore.com
28
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$271.23
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WATTS Backflow Preventer - 1/2" Bronze Combination Fill Valve & Backflow Prevention, NPT Threaded, 100 PSI, 212°F (MPN: 386463)
PlumbingSupplyandMore.com
28
Testing A Backflow Device
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Shop Backflow Preventer for Pool Auto Fill

Sponsored
About our ads
$49.99
Pentair T29 Fluidmaster Autofill Float Valve RP-402
Vita Pool Supply
144
$49.99
Pentair T29 Fluidmaster Autofill Float Valve RP-402
Vita Pool Supply
144
$179.99
Pentair T40FBK Black Autofill With Fluidmaster Valve
Vita Pool Supply
1
$179.99
Pentair T40FBK Black Autofill With Fluidmaster Valve
Vita Pool Supply
1
$45.99
$55.99
2026 Upgrade Automatic Pool Filler, Pool Water Leveler Auto Fill, Pool Auto Fill Float Valve, Water Leveler Control Sentry, Swimming Pool, Spa, Pond
Amazon.com
537
Free shipping
17% off
$45.99
$55.99
2026 Upgrade Automatic Pool Filler, Pool Water Leveler Auto Fill, Pool Auto Fill Float Valve, Water Leveler Control Sentry, Swimming Pool, Spa, Pond
Amazon.com
537
$101.78
$139.16
Watts LF288A 3/8" Lead-Free Brass Anti-Siphon Vacuum Breaker Backflow Preventer, Female NPT Inlet And Outlet, Silicone Disc Seat, Chrome Hood,
Amazon.com
44
Free shipping
26% off
$101.78
$139.16
Watts LF288A 3/8" Lead-Free Brass Anti-Siphon Vacuum Breaker Backflow Preventer, Female NPT Inlet And Outlet, Silicone Disc Seat, Chrome Hood,
Amazon.com
44
$207.74
Caleffi 573006A 1/2" 573 Backflow Preventer And Autofill Combination (Press X Press) | Supplyhouse.Com
SupplyHouse.com
$207.74
Caleffi 573006A 1/2" 573 Backflow Preventer And Autofill Combination (Press X Press) | Supplyhouse.Com
SupplyHouse.com
$312.32
$583.50
Watts 0386473 B911T-M3 1/2" Combination Fill Valve And Backflow Preventer With Press Adapters
WebstaurantStore
46% off
$312.32
$583.50
Watts 0386473 B911T-M3 1/2" Combination Fill Valve And Backflow Preventer With Press Adapters
WebstaurantStore
$161.92
Caleffi 573002A 1/2" 573 Backflow Preventer And Autofill Combination (NPT X NPT) | Supplyhouse.Com
SupplyHouse.com
8
$161.92
Caleffi 573002A 1/2" 573 Backflow Preventer And Autofill Combination (NPT X NPT) | Supplyhouse.Com
SupplyHouse.com
8
$224.10
Caleffi 573016A 1/2" 573 Backflow Preventer And Autofill Combination W/ Pressure Gauge (Press X Press) | Supplyhouse.Com
SupplyHouse.com
4
$224.10
Caleffi 573016A 1/2" 573 Backflow Preventer And Autofill Combination W/ Pressure Gauge (Press X Press) | Supplyhouse.Com
SupplyHouse.com
4
$151.10
Caleffi 573009A 1/2" 573 Backflow Preventer And Autofill Combination (Sweat X NPT) | Supplyhouse.Com
SupplyHouse.com
9
$151.10
Caleffi 573009A 1/2" 573 Backflow Preventer And Autofill Combination (Sweat X NPT) | Supplyhouse.Com
SupplyHouse.com
9
$284.79
$533.00
Watts 0386463 B911T-M3 1/2" Union FNPT X FNPT Combination Fill Valve And Backflow Preventer
WebstaurantStore
28
46% off
$284.79
$533.00
Watts 0386463 B911T-M3 1/2" Union FNPT X FNPT Combination Fill Valve And Backflow Preventer
WebstaurantStore
28
$197.48
Caleffi 573012A 1/2" 573 Backflow Preventer And Autofill Combination W/ Pressure Gauge (NPT X NPT) | Supplyhouse.Com
SupplyHouse.com
10
$197.48
Caleffi 573012A 1/2" 573 Backflow Preventer And Autofill Combination W/ Pressure Gauge (NPT X NPT) | Supplyhouse.Com
SupplyHouse.com
10
$248.83
Watts 800M4FR Series 1" Bronze Freeze-Resistant Pressure Backflow Preventer Assembly, Quarter Turn Shutoff, Tee Handles, Freeze Sensor With Sentryplus
Amazon.com
Free shipping
$248.83
Watts 800M4FR Series 1" Bronze Freeze-Resistant Pressure Backflow Preventer Assembly, Quarter Turn Shutoff, Tee Handles, Freeze Sensor With Sentryplus
Amazon.com
Free shipping
$130.62
$140.00
Febco 765 Series 1" Bronze Pressure Vacuum Breaker Backflow Preventer, Quarter Turn Shutoff, NPT Connections, Freeze Sensor With Sentryplus Alert
Amazon.com
5
Free shipping
$130.62
$140.00
Febco 765 Series 1" Bronze Pressure Vacuum Breaker Backflow Preventer, Quarter Turn Shutoff, NPT Connections, Freeze Sensor With Sentryplus Alert
Amazon.com
5
$210.33
Zurn Wilkins 34-350 3/4" 350 Double Check Backflow Preventer
Amazon.com
70
Free shipping
$210.33
Zurn Wilkins 34-350 3/4" 350 Double Check Backflow Preventer
Amazon.com
70
$49.99
Fluidmaster Autofill Float Valve (Poolmiser, Inc. - Rp-402)
eBay
$49.99
Fluidmaster Autofill Float Valve (Poolmiser, Inc. - Rp-402)
eBay
$193.11
Caleffi 573019A 1/2" 573 Backflow Preventer & Autofill Combination W/ Pressure Gauge (Sweat X NPT) | Supplyhouse.Com
SupplyHouse.com
6
$193.11
Caleffi 573019A 1/2" 573 Backflow Preventer & Autofill Combination W/ Pressure Gauge (Sweat X NPT) | Supplyhouse.Com
SupplyHouse.com
6
$269.85
$314.99
Watts LF007 Series 3/4" Lead-Free Copper Silicon Alloy Double Check Valve Backflow Preventer Assembly, Quarter Turn Shutoff, Single Top Entry, NPT
Amazon.com
1
Free shipping
14% off
$269.85
$314.99
Watts LF007 Series 3/4" Lead-Free Copper Silicon Alloy Double Check Valve Backflow Preventer Assembly, Quarter Turn Shutoff, Single Top Entry, NPT
Amazon.com
1
$73.44
Watts LF288A 1/2" Lead-Free Brass Anti-Siphon Vacuum Breaker Backflow Preventer, Female NPT Inlet And Outlet, Silicone Disc Seat, Chrome Hood,
Amazon.com
269
Free shipping
$73.44
Watts LF288A 1/2" Lead-Free Brass Anti-Siphon Vacuum Breaker Backflow Preventer, Female NPT Inlet And Outlet, Silicone Disc Seat, Chrome Hood,
Amazon.com
269