FaucetsAir ToolsAll Tool SetsAmerican StandardBathroom Cabinets & FixturesBathroom HardwareBathroom PlumbingCaulking & SealantsDeckingDelta Home ImprovementDesigner Plumbing Fixtures & HardwareElectrical ToolsEmergency SuppliesEvaporative Coolers and PartsGarage Storage SystemsGroheGuttering & DrainageHand ToolsHVAC Ducting and VentilationInsulationKitchen Fixtures and MaterialsKitchen PlumbingMayfairMechanics ToolsMoen Home ImprovementOutdoor DrainagePaint Supplies & ToolsPipes, Fittings & AccessoriesPlumbing Tools & AccessoriesPower Tool AccessoriesPower ToolsProjectsRoofingSealants, Fillers and AdhesivesShop Plumbing BrandsShop Plumbing by FixtureStorage ContainersStorm & Flood PrepTestersToilets and BidetsUtility FixturesUtility Sinks & FaucetsValves & Valve RepairWater FiltersWater Filtration & Water SoftenersWater HeatersWater Heaters, Pumps & TanksWeatherproof CoversWelding & Cutting AccessoriesWinter Prep
Sort by|
FaucetsAir ToolsAll Tool SetsAmerican StandardBathroom Cabinets & FixturesBathroom HardwareBathroom PlumbingCaulking & SealantsDeckingDelta Home ImprovementDesigner Plumbing Fixtures & HardwareElectrical ToolsEmergency SuppliesEvaporative Coolers and PartsGarage Storage SystemsGroheGuttering & DrainageHand ToolsHVAC Ducting and VentilationInsulationKitchen Fixtures and MaterialsKitchen PlumbingMayfairMechanics ToolsMoen Home ImprovementOutdoor DrainagePaint Supplies & ToolsPipes, Fittings & AccessoriesPlumbing Tools & AccessoriesPower Tool AccessoriesPower ToolsProjectsRoofingSealants, Fillers and AdhesivesShop Plumbing BrandsShop Plumbing by FixtureStorage ContainersStorm & Flood PrepTestersToilets and BidetsUtility FixturesUtility Sinks & FaucetsValves & Valve RepairWater FiltersWater Filtration & Water SoftenersWater HeatersWater Heaters, Pumps & TanksWeatherproof CoversWelding & Cutting AccessoriesWinter Prep
Backflow Plumbing(437)
Uses item details. Price when purchased online
RV Camper 1/2 Inch Thread Plastic Check Valve Backflow Preventer Black PN 94211 $11.34 Was $12.60
Sponsored
Now$1134
current price Now $11.34, Was $12.60$12.60
RV Camper 1/2 Inch Thread Plastic Check Valve Backflow Preventer Black PN 94211
Merrill mfg BVBADNL75 Brass Vacuum Breaker Valve, 3/4 inch, Backflow Preventor for Drain Pipes $16.96
Sponsored
$1696
current price $16.96Merrill mfg BVBADNL75 Brass Vacuum Breaker Valve, 3/4 inch, Backflow Preventor for Drain Pipes
54.8 out of 5 Stars. 5 reviews
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
84.4 out of 5 Stars. 8 reviews
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
33.7 out of 5 Stars. 3 reviews
Clearance Inerposs Drains Backflow Preventer, One Way Drain Valve for Shower Floor Water Drainage, Orange (1PC) Was $4.64
Inerposs Drains Backflow Preventer, One Way Drain Valve for Shower Floor Water Drainage, Orange (1PC)
Drain Backflow Preventer 1 Pack - One Way Drain Sewer Core for Floor Drainage - Odor and Insect Stopper for Shower Kitchen Bathroom Basement Toilet Sink Drain From $5.44
From$544
Drain Backflow Preventer 1 Pack - One Way Drain Sewer Core for Floor Drainage - Odor and Insect Stopper for Shower Kitchen Bathroom Basement Toilet Sink Drain
Tuphregyow Floor Drain Backflow Preventer - One-Way Valves Sewer Core for Bathroom, Kitchen, and Basement Water Drainage. Black
Tuphregyow Floor Drain Backflow Preventer - One-Way Valves Sewer Core for Bathroom, Kitchen, and Basement Water Drainage. Black
Mueller/B & K 108-904RP Backflow Preventer-Vacuum Breaker From $10.74
From$1074
Mueller/B & K 108-904RP Backflow Preventer-Vacuum Breaker
214.4 out of 5 Stars. 21 reviews
3/4 in. Bronze Double Check Valve Backflow Preventer Assembly Quarter Turn Shutoff with Freeze Sensor $249.99
$24999
current price $249.993/4 in. Bronze Double Check Valve Backflow Preventer Assembly Quarter Turn Shutoff with Freeze Sensor
Anti-backflow Floor Drain,magnetic Levitation Smell Proof,shower Sink Check Valve,one Way Sewer Seal Plug $34.68
$3468
current price $34.68Anti-backflow Floor Drain,magnetic Levitation Smell Proof,shower Sink Check Valve,one Way Sewer Seal Plug
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
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
ARROWHEAD BRASS & PLUMBING 58ABP Backflow Preventer, Non Anti-Siphon, 3/4 In. Hose Thread $23.28
$2328
current price $23.28ARROWHEAD BRASS & PLUMBING 58ABP Backflow Preventer, Non Anti-Siphon, 3/4 In. Hose Thread
Merrill mfg BVBADNL75 Brass Vacuum Breaker Valve, 3/4 inch, Backflow Preventor for Drain Pipes $16.96
$1696
current price $16.96Merrill mfg BVBADNL75 Brass Vacuum Breaker Valve, 3/4 inch, Backflow Preventor for Drain Pipes
54.8 out of 5 Stars. 5 reviews
Clearance Shower Floor Drain Valve One Way Backflow Preventer Anti Odor Insect Proof Sewer Core Insert Bathroom Kitchen Drain Filter Replacement Anti Smell Water Blocker Plumbing Accessory Was $8.15
Shower Floor Drain Valve One Way Backflow Preventer Anti Odor Insect Proof Sewer Core Insert Bathroom Kitchen Drain Filter Replacement Anti Smell Water Blocker Plumbing Accessory
Uxcell Floor Drain Anti-Odor Core, Shower Floor Drain Backflow Preventer, Black 4 Pack From $10.79
3 options
Available in additional 3 optionsFrom$1079
Uxcell Floor Drain Anti-Odor Core, Shower Floor Drain Backflow Preventer, Black 4 Pack
41.3 out of 5 Stars. 4 reviews
Drains Backflow Preventer, One Way Shower Floor Drain Valve, Sewer Core for Preventing Odors and Insect Backflow, Durable Metal+PC Construction, 7.5x3cm
Drains Backflow Preventer, One Way Shower Floor Drain Valve, Sewer Core for Preventing Odors and Insect Backflow, Durable Metal+PC Construction, 7.5x3cm
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
84.4 out of 5 Stars. 8 reviews
Clearance 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
YAHHU 1/2 in DN15 Female Thread Brass Swing Check Valve, 232 PSI Water Backflow Preventer, 2.76 inches / 7 cm Long, Durable Industrial Plumbing Supply for Normal Temperature One-Way Flow $12.20
$1220
current price $12.20YAHHU 1/2 in DN15 Female Thread Brass Swing Check Valve, 232 PSI Water Backflow Preventer, 2.76 inches / 7 cm Long, Durable Industrial Plumbing Supply for Normal Temperature One-Way Flow
Groco CV Bronze In-Line Check Valve $30.70
Sponsored
$3070
current price $30.70Groco CV Bronze In-Line Check Valve
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
Plumbing Backwater Valve 3 Inch, PVC Backflow Preventer, Sewer Drain Check Valve, White - Leak Proof Protection for Home & Business $43.07
$4307
current price $43.07Plumbing Backwater Valve 3 Inch, PVC Backflow Preventer, Sewer Drain Check Valve, White - Leak Proof Protection for Home & Business
IPW Industries Inc. | SMC 6850090 Inline Poppet Backflow Preventer Check Valve for Home Improvement, Water Pump System, Kitchen Plumbing & Irrigation $22.00
$2200
current price $22.00IPW Industries Inc. | SMC 6850090 Inline Poppet Backflow Preventer Check Valve for Home Improvement, Water Pump System, Kitchen Plumbing & Irrigation
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
33.7 out of 5 Stars. 3 reviews
Watts Backflow System Low Pressure, 1-1/4 In. Fip, Lead Free
Watts Backflow System Low Pressure, 1-1/4 In. Fip, Lead Free
Backflow Preventer Valves for Shower & Floor Drains | One-Way Sewer Check Valves | Metal+PC Construction | Prevents Odors & Backflow
Backflow Preventer Valves for Shower & Floor Drains | One-Way Sewer Check Valves | Metal+PC Construction | Prevents Odors & Backflow
Uxcell 2-Pack Brass Check Valve, 1/2" Male to 1/2" Male Thread One Way Non-Return Backflow Preventer Valve [Gold] $11.49
![Uxcell 2-Pack Brass Check Valve, 1/2" Male to 1/2" Male Thread One Way Non-Return Backflow Preventer Valve [Gold]](https://i5.walmartimages.com/seo/Uxcell-2-Pack-Brass-Check-Valve-1-2-Male-to-1-2-Male-Thread-One-Way-Non-Return-Backflow-Preventer-Valve-Gold_60d7ab8f-3159-4d4a-8bd8-41d5be9eea48.a94d3839d5509db131db6f1b8480a2e8.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
$1149
current price $11.49Uxcell 2-Pack Brass Check Valve, 1/2" Male to 1/2" Male Thread One Way Non-Return Backflow Preventer Valve [Gold]
1/2inch Brass Backflow Preventer Reinforced Design Suitable For Plumbing And Pipe Configurations
1/2inch Brass Backflow Preventer Reinforced Design Suitable For Plumbing And Pipe Configurations
Clearance Backflow Preventer Drain Valve, One-way Sewer Core for Shower and Floor Drainage, Odor and Insect Barrier for Bathroom Kitchen Basement Toilet, Topliu Was $5.19
Backflow Preventer Drain Valve, One-way Sewer Core for Shower and Floor Drainage, Odor and Insect Barrier for Bathroom Kitchen Basement Toilet, Topliu
The Bosworth Co., Foot/Check Valve for Guzzler 400, 1-1/8", MPN 74-9 $23.20
Sponsored
$2320
current price $23.20The Bosworth Co., Foot/Check Valve for Guzzler 400, 1-1/8", MPN 74-9
Drains Backflow Preventer, One-Way Shower Floor Drain Valve, ABS Sewer Core, Odor and Insect Blocker for Kitchen, Bathroom, Garage, 1 Pc, Orange
Drains Backflow Preventer, One-Way Shower Floor Drain Valve, ABS Sewer Core, Odor and Insect Blocker for Kitchen, Bathroom, Garage, 1 Pc, Orange
15 out of 5 Stars. 1 reviews
deevoka PVC Drainage Pipe Floor Drain Backflow Preventer Valve for Plumbing Fixtures XL
deevoka PVC Drainage Pipe Floor Drain Backflow Preventer Valve for Plumbing Fixtures XL
Universal Straight Odor Proof Floor Drain Cover with Automatic Closure | 360° Quick Drainage | Sewer Gas & Backflow Prevention | Easy to Install for Bathroom, Kitchen, Laundry & Basement From $4.29
From$429
Universal Straight Odor Proof Floor Drain Cover with Automatic Closure | 360° Quick Drainage | Sewer Gas & Backflow Prevention | Easy to Install for Bathroom, Kitchen, Laundry & Basement
15 out of 5 Stars. 1 reviews
Clearance Backflow Preventer for Shower & Floor Drains | One-Way Sewer Drain | Prevents Odors & Backflow in Bathroom, Kitchen, Basement & Garage | Metal & PC Construction From $3.44
From$344
Backflow Preventer for Shower & Floor Drains | One-Way Sewer Drain | Prevents Odors & Backflow in Bathroom, Kitchen, Basement & Garage | Metal & PC Construction
Heavy Duty 3/4 Thread Brass Check Spring Loaded Backflow Preventer Systems $13.99
$1399
current price $13.99Heavy Duty 3/4 Thread Brass Check Spring Loaded Backflow Preventer Systems
Vertical Check Valves Brass Construction Easy Installation Backflow Prevention Was $14.59
Vertical Check Valves Brass Construction Easy Installation Backflow Prevention
63190 Backflow Preventer 1/2", Single, No Color $78.99
$7899
current price $78.9963190 Backflow Preventer 1/2", Single, No Color
Strong ABS Check Valves Leak Proof Vacuum Backflow Preventer with PTFE Tape for Secure Plumbing & Backflow Defense $17.60
$1760
current price $17.60Strong ABS Check Valves Leak Proof Vacuum Backflow Preventer with PTFE Tape for Secure Plumbing & Backflow Defense
Efficient Water Backflow Prevention Multifunction Check Valves 3 8 3 4 Threaded Check Valves Secure for Plumbing
Efficient Water Backflow Prevention Multifunction Check Valves 3 8 3 4 Threaded Check Valves Secure for Plumbing
AFQH PVC Drainage Pipe Floor Drains Auto Closing Displacement Valve Cover Backflow Preventer Leak-Resistant Upgrade Bathroom Decor 50-160mm From $8.27
2 options
Available in additional 2 optionsFrom$827
AFQH PVC Drainage Pipe Floor Drains Auto Closing Displacement Valve Cover Backflow Preventer Leak-Resistant Upgrade Bathroom Decor 50-160mm
64.3 out of 5 Stars. 6 reviews
Virelaxpo Silent Sump Pump Check Valve 1.5 Inch Clear Body with Stainless Steel Clamps for Backflow Prevention and Plumbing Installation Water System From $21.00
From$2100
Virelaxpo Silent Sump Pump Check Valve 1.5 Inch Clear Body with Stainless Steel Clamps for Backflow Prevention and Plumbing Installation Water System
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
Caleffi 573403A Backflow Preventer 1/2" NPT ASSE 1012 $88.57
$8857
current price $88.57Caleffi 573403A Backflow Preventer 1/2" NPT ASSE 1012
Yajisi DN32 Female Thread Brass Swing Check Valve 1-1/4 Inch 232PSI One-Way Non-Return Prevent Water Backflow For Home Plumbing Industrial Use Heavy Duty 15.7oz $22.28
$2228
current price $22.28Yajisi DN32 Female Thread Brass Swing Check Valve 1-1/4 Inch 232PSI One-Way Non-Return Prevent Water Backflow For Home Plumbing Industrial Use Heavy Duty 15.7oz
Heavy Duty Check Valves Anti Siphon Defense Leakproof Backflow Prevention Simple Installation for Plumbing $15.95
$1595
current price $15.95Heavy Duty Check Valves Anti Siphon Defense Leakproof Backflow Prevention Simple Installation for Plumbing
12" Frost-Proof Hose Bibb with Push Connector Backflow Preventer 1/2" Connector $29.96
$2996
current price $29.9612" Frost-Proof Hose Bibb with Push Connector Backflow Preventer 1/2" Connector
Full Port Utility Valve, Solvent Connections Stainless Steel Spring Loaded Backflow Preventer, Ideal For Commercial And Home Plumbing (20mm) $19.99
$1999
current price $19.99Full Port Utility Valve, Solvent Connections Stainless Steel Spring Loaded Backflow Preventer, Ideal For Commercial And Home Plumbing (20mm)
Road & Home 1/2 in. Backflow Preventer, Brass $6.75
$675
current price $6.75Road & Home 1/2 in. Backflow Preventer, Brass
15 out of 5 Stars. 1 reviews
Popular in Backflow Plumbing
Related Products
Larsen 03-4221 Lavatory/Kitchen Wall Drain J-Bend, White PVC - Quantity 6
Larsen 03-4221 Lavatory/Kitchen Wall Drain J-Bend, White PVC - Quantity 6$32.23current price $32.2350-160Mm Pvc Drainage Pipe Floor Drains Auto Closing Displacement Valve Cover
50-160Mm Pvc Drainage Pipe Floor Drains Auto Closing Displacement Valve Cover$6.19current price $6.1950-160mm PVC Drainage Pipe Floor Drains Auto Closing Displacement Valve Cover
50-160mm PVC Drainage Pipe Floor Drains Auto Closing Displacement Valve Cover$14.37current price $14.37Fisher Drain Ws 1 X 2 Brs Kit 84085 - Genuine OEM Replacement Part
Fisher Drain Ws 1 X 2 Brs Kit 84085 - Genuine OEM Replacement Part$27.61current price $27.61Uxcell 43mm PP Radiator Escutcheon Water Pipe Cover Decoration Black 10 Pack
Uxcell 43mm PP Radiator Escutcheon Water Pipe Cover Decoration Black 10 Pack$11.49current price $11.49Keeney PP50PCLF Lead-Free Brass Quarter Turn Angle Valve, 3/8-in OD x 3/8-in OD
Keeney PP50PCLF Lead-Free Brass Quarter Turn Angle Valve, 3/8-in OD x 3/8-in OD$16.52current price $16.52Anderson Metals 1/4 in. MIP in. X 1/4 in. D FIP Brass Pipe Valve
Anderson Metals 1/4 in. MIP in. X 1/4 in. D FIP Brass Pipe Valve$58.88current price $58.88Brasscraft Shut-Off Valve < 0.25 % Lead Angle 3/8 " Od. Tube Chrome Multi-Turn Boxed
Brasscraft Shut-Off Valve < 0.25 % Lead Angle 3/8 " Od. Tube Chrome Multi-Turn Boxed$14.88current price $14.88Anderson Metals 3/8 in. MIP in. X 3/8 in. MIP Brass Pipe Valve
Anderson Metals 3/8 in. MIP in. X 3/8 in. MIP Brass Pipe Valve$105.47current price $105.47DreamBone SILLCOCK FROST FREE 6" — Residential Use, Standard Application
DreamBone SILLCOCK FROST FREE 6" — Residential Use, Standard Application$33.96current price $33.96Anderson Metals 3/8 in. 3/8 in. Brass Valve
Anderson Metals 3/8 in. 3/8 in. Brass Valve$28.60current price $28.60Anderson Metals 1/8 in. MIP in. X 1/8 in. MIP Brass Pipe Valve
Anderson Metals 1/8 in. MIP in. X 1/8 in. MIP Brass Pipe Valve$58.89current price $58.89BrassCraft 1/2 in. Compression outlets X 3/8 in. Compression Brass Shut-Off Valve
BrassCraft 1/2 in. Compression outlets X 3/8 in. Compression Brass Shut-Off Valve$12.29current price $12.29NPT Female Hydraulic 3 Way Ball Valve 5800PSI High Pressure Carbon Steel 3/4inch
NPT Female Hydraulic 3 Way Ball Valve 5800PSI High Pressure Carbon Steel 3/4inch$48.00current price $48.00Aignep Usa Universal Flow Control,Elbow,3/8" 88978-06-06
Aignep Usa Universal Flow Control,Elbow,3/8" 88978-06-06$40.90current price $40.90
