FaucetsAir ToolsAmerican StandardBathroom Cabinets & FixturesBathroom PlumbingElectrical ToolsGuttering & DrainageHand ToolsHVAC Ducting and VentilationKitchen PlumbingMechanics ToolsPipes, Fittings & AccessoriesPlumbing Tools & AccessoriesPower ToolsRoofingShop Plumbing by FixtureTestersValves & Valve RepairWater HeatersWater Heaters, Pumps & Tanks
Sort by|
FaucetsAir ToolsAmerican StandardBathroom Cabinets & FixturesBathroom PlumbingElectrical ToolsGuttering & DrainageHand ToolsHVAC Ducting and VentilationKitchen PlumbingMechanics ToolsPipes, Fittings & AccessoriesPlumbing Tools & AccessoriesPower ToolsRoofingShop Plumbing by FixtureTestersValves & Valve RepairWater HeatersWater Heaters, Pumps & Tanks
Backflow Prevent(477)
Uses item details. Price when purchased online
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
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
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
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
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
Clearance Backflow Preventer Floor Drain, Sewer Core, Odor Blocker, Insect Barrier, One Way, Easy Install, for Shower, Bath, Kitchen, Basement, 2.51x1.77x1in Was $9.89
Backflow Preventer Floor Drain, Sewer Core, Odor Blocker, Insect Barrier, One Way, Easy Install, for Shower, Bath, Kitchen, Basement, 2.51x1.77x1in
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
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
Road & Home 1/2 in. Backflow Preventer, Brass $6.75
$675
current price $6.75Road & Home 1/2 in. Backflow Preventer, Brass
Save with
Legend Valve T-459 3/4" Backflow Preventer / Atmospheric Vent, #115-114 $74.47
$7447
current price $74.47Legend Valve T-459 3/4" Backflow Preventer / Atmospheric Vent, #115-114
1Pcs 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
1Pcs Brass Check Valve 1 Inch, Backflow Preventer,1” IG TO AG Return Valve, Rustproof and Watertight,For Water Pipes,Pumps,Gardens,Barrels,Washing Machines
RV Camper 1/2 Inch Thread Plastic Check Valve Backflow Preventer Black PN 94211 $12.60
Sponsored
$1260
current price $12.60RV Camper 1/2 Inch Thread Plastic Check Valve Backflow Preventer Black PN 94211
Clearance Floor Drain Backflow Preventer Valve | One Way Sewer Core | Odor & Insect Blocker | Easy Install | PC Material White Orange Green | 6.95x5.6x2.95cm Was $6.21
Floor Drain Backflow Preventer Valve | One Way Sewer Core | Odor & Insect Blocker | Easy Install | PC Material White Orange Green | 6.95x5.6x2.95cm
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
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
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
BP900 Honeywell Backflow Preventor 1/2" Double OEM BP900 $81.95
$8195
current price $81.95BP900 Honeywell Backflow Preventor 1/2" Double OEM BP900
Clearance Shower Floor Drain Backflow Preventer Valve – One Way Sewer Core Insert, Anti Odor and Insect for Bathroom, Kitchen, Basement Was $6.39
Shower Floor Drain Backflow Preventer Valve – One Way Sewer Core Insert, Anti Odor and Insect for Bathroom, Kitchen, Basement
(Price/Each)Watts Regulator B911S 1/2" Sweat Combo Back Flow Preventer & Pressure Reducing Valve 0386462 Replaces 911S $233.27
$23327
current price $233.27(Price/Each)Watts Regulator B911S 1/2" Sweat Combo Back Flow Preventer & Pressure Reducing Valve 0386462 Replaces 911S
Apollo Valves Reduced Pressure Zone Backflow Preventer 4ALF205A2F $559.96 $559.96/1
$55996
current price $559.96$559.96/1
Apollo Valves Reduced Pressure Zone Backflow Preventer 4ALF205A2F
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
Save with
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
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
Save with
T&S Brass - Backflow Preventer, 3/4'' NPT, Designed for Continuous Pressure, Atmospheric Vent Non-Potable Water Applications $310.72
$31072
current price $310.72T&S Brass - Backflow Preventer, 3/4'' NPT, Designed for Continuous Pressure, Atmospheric Vent Non-Potable Water Applications
TOP-MAX 3/4" (20mm)-G1/2" Female Or Male Thread Backflow Prevention Valve One-Way Backflow Prevention Hose Valve From $7.13
5 options
Available in additional 5 optionsFrom$713
TOP-MAX 3/4" (20mm)-G1/2" Female Or Male Thread Backflow Prevention Valve One-Way Backflow Prevention Hose Valve
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
Watts Backflow Prevent System, 1 In. Fip, Lead Free
Watts Backflow Prevent System, 1 In. Fip, Lead Free
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
Legend Valve T-459 1/2" Backflow Preventer / Atmospheric Vent, #115-113 $72.07
$7207
current price $72.07Legend Valve T-459 1/2" Backflow Preventer / Atmospheric Vent, #115-113
FRKSMD-2-Pack 3/4 Inch GHT Backflow Preventer for Garden Hose, Brass Vacuum Breaker Outside Faucet, Anti-Siphon Valve Hose Bib, Garden Hose Check Valve, RV Vacuum Breaker Valve with Tape $26.98
$2698
current price $26.98FRKSMD-2-Pack 3/4 Inch GHT Backflow Preventer for Garden Hose, Brass Vacuum Breaker Outside Faucet, Anti-Siphon Valve Hose Bib, Garden Hose Check Valve, RV Vacuum Breaker Valve with Tape
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
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
2 Pack Brass Check Valve 1/2 Inch Male To Male Thread One Way Non Return Backflow Preventer $10.58
$1058
current price $10.582 Pack Brass Check Valve 1/2 Inch Male To Male Thread One Way Non Return Backflow Preventer
YIEMEEN Backflow Preventer Sump Pump Check Valves Sewage Backflow Prevention Valves
YIEMEEN Backflow Preventer Sump Pump Check Valves Sewage Backflow Prevention Valves
Champion - Moyer Diebel 110551 Backflow Preventer 1/2 NPT $348.94
$34894
current price $348.94Champion - Moyer Diebel 110551 Backflow Preventer 1/2 NPT
Mueller/ B&K ProLine Backflow Preventer-Vacuum Breaker - Pack of 8 $116.88
$11688
current price $116.88Mueller/ B&K ProLine Backflow Preventer-Vacuum Breaker - Pack of 8
T&S Brass - Dual Check Valve Backflow Preventer, 1/2 $164.62
$16462
current price $164.62T&S Brass - Dual Check Valve Backflow Preventer, 1/2
BAOPAI One Way Drain Valve Backflow Preventer for Floor Drains - Blocks Odors and Backflow, Easy to Install in Showers and Sinks
BAOPAI One Way Drain Valve Backflow Preventer for Floor Drains - Blocks Odors and Backflow, Easy to Install in Showers and Sinks
Tizuqe 1/2'' One Way Backflow Preventer Check Valves Copper Threaded Check for Valve Du $9.74
$974
current price $9.74Tizuqe 1/2'' One Way Backflow Preventer Check Valves Copper Threaded Check for Valve Du
unbranded Backflow Preventer for Hose Valve Anti Water Back Golden $12.83
$1283
current price $12.83unbranded Backflow Preventer for Hose Valve Anti Water Back Golden
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
Anti-odor Floor Drain Backflow Preventer Shower Waste Water Drainer Insert Drain Plug Sewer From $7.76
2 options
Available in additional 2 optionsFrom$776
Anti-odor Floor Drain Backflow Preventer Shower Waste Water Drainer Insert Drain Plug Sewer
Apollo Valves Reduced Pressure Zone Backflow Preventer 4ALF203A2F $498.79
$49879
current price $498.79Apollo Valves Reduced Pressure Zone Backflow Preventer 4ALF203A2F
Caleffi 573403A Backflow Preventer 1/2" NPT ASSE 1012 $92.79
$9279
current price $92.79Caleffi 573403A Backflow Preventer 1/2" NPT ASSE 1012
1 in. Bronze Double Check Valve Backflow Preventer Assembly Quarter Turn Shutoff with Single Top Entry Freeze Sensor $250.00
$25000
current price $250.001 in. Bronze Double Check Valve Backflow Preventer Assembly Quarter Turn Shutoff with Single Top Entry Freeze Sensor
Fall Savings! PRETXORVE Drains Backflow Preventer Shower Floor Drains Backflow Preventer One Way Drains Valves Sewer Core for Floor Water Drainage From $3.71
From$371
Fall Savings! PRETXORVE Drains Backflow Preventer Shower Floor Drains Backflow Preventer One Way Drains Valves Sewer Core for Floor Water Drainage
3/8" Inline Backflow Preventer, Air Check Valve, Easy to Install, Plastic High Adsorption Properties for Fuel Gas Liquid - $11.76
$1176
current price $11.763/8" Inline Backflow Preventer, Air Check Valve, Easy to Install, Plastic High Adsorption Properties for Fuel Gas Liquid -
Heavy Duty Brass Inline Check Valves with Horizontal Spring Designs Backflow Preventer Prevent for Pumps Systems & Tanks $12.84
$1284
current price $12.84Heavy Duty Brass Inline Check Valves with Horizontal Spring Designs Backflow Preventer Prevent for Pumps Systems & Tanks
2 Pack Brass Check Valve 3/4 Inch NPT Female Thread One Way Backflow Preventer $17.08
$1708
current price $17.082 Pack Brass Check Valve 3/4 Inch NPT Female Thread One Way Backflow Preventer
yaaqii PVC Check Valve Backflow Prevention Valve Backflow Water Valve Prevent Backflow From $16.75
2 options
Available in additional 2 optionsFrom$1675
yaaqii PVC Check Valve Backflow Prevention Valve Backflow Water Valve Prevent Backflow
Other options to consider(11)
Popular in Backflow Prevent
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 $32.23BTOER 50-160mm PVC Drainage Pipe Floor Drains Auto Closing Displacement Valve Cover, 110
BTOER 50-160mm PVC Drainage Pipe Floor Drains Auto Closing Displacement Valve Cover, 110$14.34current price $14.3450-160Mm Pvc Drainage Pipe Floor Drains Auto Closing Displacement Valve Cover
50-160Mm Pvc Drainage Pipe Floor Drains Auto Closing Displacement Valve Cover$14.38current price $14.3850-160mm 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 $14.37Arkzeo 50-160mm PVC Drainage Pipe Floor Drains Auto Closing Displacement Valve Cover 50
Arkzeo 50-160mm PVC Drainage Pipe Floor Drains Auto Closing Displacement Valve Cover 50$9.39current price $9.39Cornelius Fitting Drain Ni 3/4 X 1/2 170413000 - Genuine OEM Replacement Part
Cornelius Fitting Drain Ni 3/4 X 1/2 170413000 - Genuine OEM Replacement Part$39.80current price $39.8050-160Mm Pvc Drainage Pipe Floor Drains Auto Closing Displacement Valve Cover 160
50-160Mm Pvc Drainage Pipe Floor Drains Auto Closing Displacement Valve Cover 160$19.06current price $19.06Uxcell PP Radiator Escutcheon Water Pipe Drain Line Cover Black 12pcs White 2.36" x 0.51"
Uxcell PP Radiator Escutcheon Water Pipe Drain Line Cover Black 12pcs White 2.36" x 0.51"$12.59current price $12.59Proflo PFPCVC300K 2" Pvc Compression Check Valve
Proflo PFPCVC300K 2" Pvc Compression Check Valve$70.11current price $70.11Homewerks 1 in. D X 1 in. D FIP PVC Spring Loaded Check Valve
Homewerks 1 in. D X 1 in. D FIP PVC Spring Loaded Check Valve$18.77current price $18.77CV100MT Banjo 1" Male X 1" Female NPT Check Valve, Polypropylene
CV100MT Banjo 1" Male X 1" Female NPT Check Valve, Polypropylene$22.25current price $22.25Magic Plastics 2 in. D X 2 in. D Slip PVC Quiet Check Valve
Magic Plastics 2 in. D X 2 in. D Slip PVC Quiet Check Valve$40.78current price $40.78VBVP40E3B 0.5 in. PVC Schedule 40 Solvent Ball Valve - White
VBVP40E3B 0.5 in. PVC Schedule 40 Solvent Ball Valve - White$11.26current price $11.26Gf Piping Systems 1/2" Socket PVC Ball Valve Inline True Union 161375017
Gf Piping Systems 1/2" Socket PVC Ball Valve Inline True Union 161375017$47.65current price $47.651/4 Turn Press Straight Stop Valve, 1/2" Press x 3/8" OD Compression Miiflex Heavy Duty Chrome Plated Brass Quarter Shut Off Valve with Ferrule and Nut for Residential/Commercial [5 Pack]
![1/4 Turn Press Straight Stop Valve, 1/2" Press x 3/8" OD Compression Miiflex Heavy Duty Chrome Plated Brass Quarter Shut Off Valve with Ferrule and Nut for Residential/Commercial [5 Pack]](https://i5.walmartimages.com/seo/1-4-Turn-Press-Straight-Stop-Valve-1-2-Press-x-3-8-OD-Compression-Miiflex-Heavy-Duty-Chrome-Plated-Brass-Quarter-Shut-Valve-Ferrule-Nut-Residential-C_425a6d92-35fe-4a2e-b594-5366f4367e43.239b29b80566cd0fa61d82b2e07f82de.jpeg?odnHeight=576&odnWidth=576&odnBg=FFFFFF)
1/4 Turn Press Straight Stop Valve, 1/2" Press x 3/8" OD Compression Miiflex Heavy Duty Chrome Plated Brass Quarter Shut Off Valve with Ferrule and Nut for Residential/Commercial [5 Pack]$54.99current price $54.99