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FaucetsAir QualityAir ToolsAll Renewable EnergyAll Tool SetsBathroom Cabinets & FixturesBathroom HardwareBathroom PlumbingBreakers, Distributors, and Load CentersCar Emergency SuppliesCaulking & SealantsElectrical ToolsElectronic Communication ComponentsEmergency SuppliesEvaporative Coolers and PartsFireplacesGarage Storage SystemsGuttering & DrainageHand ToolsHVAC Ducting and VentilationKitchen Fixtures and MaterialsKitchen PlumbingLight BulbsMayfairMechanics ToolsMoen Home ImprovementOutdoor DrainagePaint Supplies & ToolsPersonal PreparednessPipes, Fittings & AccessoriesPlumbing Tools & AccessoriesPower Tool AccessoriesPower ToolsRegisters and GrillsRoofingSealants, Fillers and AdhesivesShop Plumbing BrandsShop Plumbing by FixtureSolar AccessoriesSolar Charge ControllerSolar PanelsSolderingStorage ContainersStorm & Flood PrepTestersToilets and BidetsUtility Sinks & FaucetsValves & Valve RepairWater DispensersWater FiltersWater Filtration & Water SoftenersWater HeatersWater Heaters, Pumps & TanksWeatherproof CoversWeldersWildfire PrepWoodworking Tools
Backflow System(372)
Uses item details. Price when purchased online
Best seller KFFKFF 12" Frost-Proof Outdoor Faucet with Anti-Siphon and Backflow Prevention, 1/2" Push-to-Fit Connector x 3/4" Hose Bibb, Lead-Free Spigot for PEX, Copper, and CPVC Pipes $24.99
Sponsored
$2499
current price $24.99KFFKFF 12" Frost-Proof Outdoor Faucet with Anti-Siphon and Backflow Prevention, 1/2" Push-to-Fit Connector x 3/4" Hose Bibb, Lead-Free Spigot for PEX, Copper, and CPVC Pipes
65 out of 5 Stars. 6 reviews
Save with
VEVOR Anti-Siphon Frost-Proof Sillcock, 12" Freeze Proof Outdoor Faucet Bib with Backflow Preventer, 1/2" Push-to-Fit Connector X 3/4" Hose Bibb, No Lead Frost-free Spigot for PEX Copper CPVC Pipes $31.90
Sponsored
$3190
current price $31.90VEVOR Anti-Siphon Frost-Proof Sillcock, 12" Freeze Proof Outdoor Faucet Bib with Backflow Preventer, 1/2" Push-to-Fit Connector X 3/4" Hose Bibb, No Lead Frost-free Spigot for PEX Copper CPVC Pipes
23 out of 5 Stars. 2 reviews
2Pcs Brass Check Valve 1 Inch, Backflow Preventer,1” AG TO IG Return Valve, Rustproof and Watertight,For Water Pipes,Pumps,Gardens,Barrels,Washing Machines From $19.99
Sponsored
From$1999
2Pcs Brass Check Valve 1 Inch, Backflow Preventer,1” AG TO IG Return Valve, Rustproof and Watertight,For Water Pipes,Pumps,Gardens,Barrels,Washing Machines
DANSPEED 1-1/2" 1.5 inch Stainless Steel Vertical Check Valve NPT Spring Loaded In-line From $12.49
Sponsored
From$1249
DANSPEED 1-1/2" 1.5 inch Stainless Steel Vertical Check Valve NPT Spring Loaded In-line
25 out of 5 Stars. 2 reviews
Road & Home 1/2 in. Backflow Preventer, Brass $6.75
$675
current price $6.75Road & Home 1/2 in. Backflow Preventer, Brass
Save with
Clearance Backflow Preventer for Shower Floor Drain, Sewer Odor Stopper with One Way Check , Drain Cover Replacement for Bathroom, Kitchen, Basement, Garage, and Toilet Drainage System Was $4.96
Backflow Preventer for Shower Floor Drain, Sewer Odor Stopper with One Way Check , Drain Cover Replacement for Bathroom, Kitchen, Basement, Garage, and Toilet Drainage System
Watts Backflow Prevent System, 1 In. Fip, Lead Free
Watts Backflow Prevent System, 1 In. Fip, Lead Free
Watts Backflow System Low Pressure, 1-1/4 In. Fip, Lead Free
Watts Backflow System Low Pressure, 1-1/4 In. Fip, Lead Free
Clearance 1.5 Inch Silent Check Valve with Baffle Connector & Stainless Steel Fixture - Backflow Preventer for Plumbing, Sump Pump, Drainage & Sewage System Was $34.35
1.5 Inch Silent Check Valve with Baffle Connector & Stainless Steel Fixture - Backflow Preventer for Plumbing, Sump Pump, Drainage & Sewage System
Clearance Backflow Preventer, Floor Drain Valve, Shower Drain Accessory, Insect and Odor Blocker, Home Drainage Solution From $4.99
From$499
Backflow Preventer, Floor Drain Valve, Shower Drain Accessory, Insect and Odor Blocker, Home Drainage Solution
2Pcs Brass Check Valve 1 Inch, Backflow Preventer,1” IG TO AG Return Valve, Rustproof and Watertight,For Water Pipes,Pumps,Gardens,Barrels,Washing Machines From $18.99
Sponsored
From$1899
2Pcs Brass Check Valve 1 Inch, Backflow Preventer,1” IG TO AG Return Valve, Rustproof and Watertight,For Water Pipes,Pumps,Gardens,Barrels,Washing Machines
Inline Check Valve w/ 1/4" Quick Connect Push Connect Fittings for Reverse Osmosis Systems $16.99
Sponsored
$1699
current price $16.99Inline Check Valve w/ 1/4" Quick Connect Push Connect Fittings for Reverse Osmosis Systems
Clearance Floor Drain Backflow Preventer Shower Drain Valves Kitchen Odor Control System Was $6.56
Floor Drain Backflow Preventer Shower Drain Valves Kitchen Odor Control System
Best seller KFFKFF 12" Frost-Proof Outdoor Faucet with Anti-Siphon and Backflow Prevention, 1/2" Push-to-Fit Connector x 3/4" Hose Bibb, Lead-Free Spigot for PEX, Copper, and CPVC Pipes $24.99
$2499
current price $24.99KFFKFF 12" Frost-Proof Outdoor Faucet with Anti-Siphon and Backflow Prevention, 1/2" Push-to-Fit Connector x 3/4" Hose Bibb, Lead-Free Spigot for PEX, Copper, and CPVC Pipes
65 out of 5 Stars. 6 reviews
Save with
CAFORKP Anti-Siphon Freeze Proof Sillcock, 12" Hose 3/4" Bibb with Backflow 1/2" Preventer $29.96 Was $35.85
Now$2996
current price Now $29.96, Was $35.85$35.85
CAFORKP Anti-Siphon Freeze Proof Sillcock, 12" Hose 3/4" Bibb with Backflow 1/2" Preventer
VEVOR Anti-Siphon Frost-Proof Sillcock, 12" Freeze Proof Outdoor Faucet Bib with Backflow Preventer, 1/2" Push-to-Fit Connector X 3/4" Hose Bibb, No Lead Frost-free Spigot for PEX Copper CPVC Pipes $31.90
$3190
current price $31.90VEVOR Anti-Siphon Frost-Proof Sillcock, 12" Freeze Proof Outdoor Faucet Bib with Backflow Preventer, 1/2" Push-to-Fit Connector X 3/4" Hose Bibb, No Lead Frost-free Spigot for PEX Copper CPVC Pipes
23 out of 5 Stars. 2 reviews
12" Frost-Proof Hose Bibb with Push Connector Backflow Preventer 1/2" Connector $29.96 Was $45.98
Now$2996
current price Now $29.96, Was $45.98$45.98
12" Frost-Proof Hose Bibb with Push Connector Backflow Preventer 1/2" Connector
XYRSRUW Shower Floor Backflow Preventer, Odor Proof Drainage System with Hair Catcher, Sewer Drain Insert Plug for Blockage Prevention, Multi-Purpose Floor Strainer for Kitchen and Bathroom From $2.99
From$299
XYRSRUW Shower Floor Backflow Preventer, Odor Proof Drainage System with Hair Catcher, Sewer Drain Insert Plug for Blockage Prevention, Multi-Purpose Floor Strainer for Kitchen and Bathroom
Guardian Equipment Backflow Preventer,Brass L108 $136.96
$13696
current price $136.96Guardian Equipment Backflow Preventer,Brass L108
Honeywell BP900 Backflow Preventer with Atmospheric Vent $77.37
$7737
current price $77.37Honeywell BP900 Backflow Preventer with Atmospheric Vent
Merrill Mfg CVNL100 No Lead Brass Check Valve for Well, 1", 700 Series $20.00
Sponsored
$2000
current price $20.00Merrill Mfg CVNL100 No Lead Brass Check Valve for Well, 1", 700 Series
104.9 out of 5 Stars. 10 reviews
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VEVOR 12-Inch Frost-Free Sillcock, 1/2" PTC x 3/4" MHT Hose Bibb, Anti-Siphon Lead-Free Brass Valve, Push-to-Connect Brass Plumbing Fitting, Compatible with PEX, Copper, CPVC Pipes $27.90
Sponsored
$2790
current price $27.90VEVOR 12-Inch Frost-Free Sillcock, 1/2" PTC x 3/4" MHT Hose Bibb, Anti-Siphon Lead-Free Brass Valve, Push-to-Connect Brass Plumbing Fitting, Compatible with PEX, Copper, CPVC Pipes
15 out of 5 Stars. 1 reviews
Watts 800M4-QT Series 1" Bronze Anti-Siphon Pressure Backflow Preventer, Quarter Turn Shutoff, NPT Female Inlet x NPT Female Outlet, Freeze Sensor, Lever Handles, Maximum Pressure 150 psi $334.14
$33414
current price $334.14Watts 800M4-QT Series 1" Bronze Anti-Siphon Pressure Backflow Preventer, Quarter Turn Shutoff, NPT Female Inlet x NPT Female Outlet, Freeze Sensor, Lever Handles, Maximum Pressure 150 psi
Floor Drain Backflow Preventer Valve, Anti-Odor Plug for Shower, Kitchen, and Bathroom Drainage, Easy to Install, Universal Sewer Core Insert From $4.98
From$498
Floor Drain Backflow Preventer Valve, Anti-Odor Plug for Shower, Kitchen, and Bathroom Drainage, Easy to Install, Universal Sewer Core Insert
1/2inch Brass Backflow Preventer Reinforced Design Suitable For Plumbing And Pipe Configurations From $9.98
From$998
1/2inch Brass Backflow Preventer Reinforced Design Suitable For Plumbing And Pipe Configurations
FrostProof Spigot,12" with Backflow Prevention 1/2" Push-to-Fit Connector X 3/4" Hose Bibb $29.96 Was $39.83
Now$2996
current price Now $29.96, Was $39.83$39.83
FrostProof Spigot,12" with Backflow Prevention 1/2" Push-to-Fit Connector X 3/4" Hose Bibb
Clearance Backflow Preventer for Shower & Floor Drains | One-Way Sewer Drain | Prevents Odors & Backflow | Metal + PC Construction | 1-Pack From $6.12
From$612
Backflow Preventer for Shower & Floor Drains | One-Way Sewer Drain | Prevents Odors & Backflow | Metal + PC Construction | 1-Pack
Backflow Preventer Valve for Shower & Floor Drains | One-Way Sewer Drain Valve | Prevents Water Backflow & Odors | Metal + PC Construction | 1-Piece Set From $4.17
From$417
Backflow Preventer Valve for Shower & Floor Drains | One-Way Sewer Drain Valve | Prevents Water Backflow & Odors | Metal + PC Construction | 1-Piece Set
Drains Backflow Preventer, One Way Drain Valve, Sewer Core, Metal+PC Material, Anti-Odor Anti-Insect, Easy to Install, for Floor Water Drainage in Bathroom Kitchen
Drains Backflow Preventer, One Way Drain Valve, Sewer Core, Metal+PC Material, Anti-Odor Anti-Insect, Easy to Install, for Floor Water Drainage in Bathroom Kitchen
Caleffi 573403A Backflow Preventer 1/2" NPT ASSE 1012 $92.79
$9279
current price $92.79Caleffi 573403A Backflow Preventer 1/2" NPT ASSE 1012
Groco CV Bronze In-Line Check Valve $30.70
Sponsored
$3070
current price $30.70Groco CV Bronze In-Line Check Valve
Bonnet Poppet Repair kit fit for FEBCO 765-1 Replacement Part# 905-212 1" & 1-1/4" Backflow Preventer and Vacuum Breaker Part 905212 for FEBCO 765 1" & 1 1/4" Vacuum Valve $19.99
Sponsored
$1999
current price $19.99Bonnet Poppet Repair kit fit for FEBCO 765-1 Replacement Part# 905-212 1" & 1-1/4" Backflow Preventer and Vacuum Breaker Part 905212 for FEBCO 765 1" & 1 1/4" Vacuum Valve
Apollo Valves Reduced Pressure Zone Backflow Preventer 4ALF206T2F $1,033.42
$1,03342
current price $1,033.42Apollo Valves Reduced Pressure Zone Backflow Preventer 4ALF206T2F
Caleffi 573503A Backflow Preventer 3/4" NPT ASSE 1012 $99.19 Was $121.00
Now$9919
current price Now $99.19, Was $121.00$121.00
Caleffi 573503A Backflow Preventer 3/4" NPT ASSE 1012
Floor Drain Backflow Preventer, One Way Valve Sewer Core for Shower Floor Water Drainage, Odor Insect Prevention, ABS Material, Easy Installation, Practical Drain Accessory
Floor Drain Backflow Preventer, One Way Valve Sewer Core for Shower Floor Water Drainage, Odor Insect Prevention, ABS Material, Easy Installation, Practical Drain Accessory
3/4-1" 975XL & 975XL2 Reduced Pressure Backflow Preventer w/ Springs $24.85
$2485
current price $24.853/4-1" 975XL & 975XL2 Reduced Pressure Backflow Preventer w/ Springs
Watts Series LF009 2 In Lead Free Reduced Pressure Zone Backflow Preventer Assembly $1,284.20
$1,28420
current price $1,284.20Watts Series LF009 2 In Lead Free Reduced Pressure Zone Backflow Preventer Assembly
AYktou Drains Backflow Preventer Shower Floor Drains Backflow Preventer One Way Drains Valves Sewer Core For Floor Water Drainage,1.16"
AYktou Drains Backflow Preventer Shower Floor Drains Backflow Preventer One Way Drains Valves Sewer Core For Floor Water Drainage,1.16"
WeiLaiKeQi PVC Drainage Pipe Floor Drain Backflow Preventer Valve for Plumbing Fixtures S From $10.99
4 options
Available in additional 4 optionsFrom$1099
WeiLaiKeQi PVC Drainage Pipe Floor Drain Backflow Preventer Valve for Plumbing Fixtures S
Sinyiin Noiseless Backflow Stopper Quiet Check Valvs Silents Backflow Preventer Valves
Sinyiin Noiseless Backflow Stopper Quiet Check Valvs Silents Backflow Preventer Valves
FRKSMD-2 Pack Faucet Vacuum Breaker, 3/4 Inch Solid Brass Anti-Siphon Hose Bib Backflow Preventer for Garden Spigot RV $26.98
$2698
current price $26.98FRKSMD-2 Pack Faucet Vacuum Breaker, 3/4 Inch Solid Brass Anti-Siphon Hose Bib Backflow Preventer for Garden Spigot RV
Sinyiin Air Conditioning Drain Valves Backflow Preventer Easy Installation for Air Conditioning Units Leakage Protection From $10.30
From$1030
Sinyiin Air Conditioning Drain Valves Backflow Preventer Easy Installation for Air Conditioning Units Leakage Protection
FHBVT Shower Floor Drain Backflow Preventer, One-Way Drain Valve, Prevents Odors & Insects, Easy Installation, Ideal for Kitchen, Bathroom, Garage, Toilet & Basement Water Drainage
FHBVT Shower Floor Drain Backflow Preventer, One-Way Drain Valve, Prevents Odors & Insects, Easy Installation, Ideal for Kitchen, Bathroom, Garage, Toilet & Basement Water Drainage
Shower Floor Drain Backflow Preventer, One-Way Drain Valve, Sewer Core, Prevents Odors Insects Backflow, Easy to Install, Suitable for Kitchen Bathroom Garage Basement From $4.76
From$476
Shower Floor Drain Backflow Preventer, One-Way Drain Valve, Sewer Core, Prevents Odors Insects Backflow, Easy to Install, Suitable for Kitchen Bathroom Garage Basement
Visible Sink Drain Backflow Preventer 1 1/2 Inch P Trap Replacement for Kitchen Bathroom Bar Sinks Was $9.99
Visible Sink Drain Backflow Preventer 1 1/2 Inch P Trap Replacement for Kitchen Bathroom Bar Sinks
1/2 Inch 9D-M3 Backflow Preventer Brass Dual Check Valve with Intermediate Atmospheric Vent,1/2 Inch,Female Union Inlet and Outlet,190T012$$Plumbing & HVAC $89.98
$8998
current price $89.981/2 Inch 9D-M3 Backflow Preventer Brass Dual Check Valve with Intermediate Atmospheric Vent,1/2 Inch,Female Union Inlet and Outlet,190T012$$Plumbing & HVAC
YIEMEEN Backflow Preventer Sump Pump Check Valves Sewage Backflow Prevention Valves
YIEMEEN Backflow Preventer Sump Pump Check Valves Sewage Backflow Prevention Valves
Clearance 3Pcs Backflow Preventer For Shower Drain, sdhkgrrt Backflow Preventer Valves, One Way Drain Valves for Shower Floor Drain Sewer, Non Return Valves for Floor Water Drainage, ABS Plastic Drain Core for $7.99 Was $9.99
Now$799
current price Now $7.99, Was $9.99$9.99
3Pcs Backflow Preventer For Shower Drain, sdhkgrrt Backflow Preventer Valves, One Way Drain Valves for Shower Floor Drain Sewer, Non Return Valves for Floor Water Drainage, ABS Plastic Drain Core for
15 out of 5 Stars. 1 reviews
Backflow Preventer for Shower and Floor Drains, One-Way Drain Valve Sewer Core, Metal+PC, Odor & Insect Barrier for Bathroom, Kitchen, Basement, 2.83x1.92in From $6.38
From$638
Backflow Preventer for Shower and Floor Drains, One-Way Drain Valve Sewer Core, Metal+PC, Odor & Insect Barrier for Bathroom, Kitchen, Basement, 2.83x1.92in
IPW Industries Inc. | SMC 6850090 Inline Poppet Backflow Preventer Check Valve for Home Improvement, Water Pump System, Kitchen Plumbing & Irrigation $21.99
$2199
current price $21.99IPW Industries Inc. | SMC 6850090 Inline Poppet Backflow Preventer Check Valve for Home Improvement, Water Pump System, Kitchen Plumbing & Irrigation
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