Home ImprovementBabyHomePatio & GardenClothingAuto & TiresCell PhonesHousehold EssentialsParty & OccasionsBooksElectronicsSports & OutdoorsToysPetsHealth and MedicineServicesPersonal CareShop with PurposeOffice SuppliesArts Crafts & SewingIndustrial & ScientificShop by BrandSubscriptionsFeature
Sort by|
Backflow Protection(398)
Uses item details. Price when purchased online
4" PVC True Union Check Valve, Sch 80 Full Port Slip Socket Ball Check Valve for Backflow Prevention, Heavy Duty No-Spring Valve for Swimming Pool, Aquarium & Irrigation From $15.99

Sponsored
From$1599
4" PVC True Union Check Valve, Sch 80 Full Port Slip Socket Ball Check Valve for Backflow Prevention, Heavy Duty No-Spring Valve for Swimming Pool, Aquarium & 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

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
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
Save with
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
BackFlow Armor Small Concrete Donut SMALL SPRINKLER DONUT $25.56

$2556
current price $25.56BackFlow Armor Small Concrete Donut SMALL SPRINKLER DONUT
25 out of 5 Stars. 2 reviews
Maymom Backflow Protector Compatible with Spectra S2 Spectra S1 and 9 Plus Breastpump Not Original Spectra Pump Parts Not Original Spectra S2 Accessories Replace Spectra Backflow Protec $9.99

$999
current price $9.99Maymom Backflow Protector Compatible with Spectra S2 Spectra S1 and 9 Plus Breastpump Not Original Spectra Pump Parts Not Original Spectra S2 Accessories Replace Spectra Backflow Protec
165 out of 5 Stars. 16 reviews
Save with
Backflow Preventer Insulated Cover | 6-Layer Thick Waterproof Pipe Insulation | Winter Protection for Water Wells, Pumps, Irrigation, Sprinklers | 24"x24" Heavy Duty Thermal Wrap From $13.69
From$1369
Backflow Preventer Insulated Cover | 6-Layer Thick Waterproof Pipe Insulation | Winter Protection for Water Wells, Pumps, Irrigation, Sprinklers | 24"x24" Heavy Duty Thermal Wrap
Nenesupply Backflow Protector Compatible with Spectra S2 Spectra S1 Breastpump Replace Spectra Pump Parts Replace Spectra Backflow Protector and Spectra S2 Parts $9.99

$999
current price $9.99Nenesupply Backflow Protector Compatible with Spectra S2 Spectra S1 Breastpump Replace Spectra Pump Parts Replace Spectra Backflow Protector and Spectra S2 Parts
85 out of 5 Stars. 8 reviews
Save with
Clearance Insulated Backflow Preventer Cover for Winter Protection, 6-Layer Fabric Design, Durable Waterproof Pipe Insulation for Sprinkler and Well Pump From $11.77
From$1177
Insulated Backflow Preventer Cover for Winter Protection, 6-Layer Fabric Design, Durable Waterproof Pipe Insulation for Sprinkler and Well Pump
15 out of 5 Stars. 1 reviews
SELIVO Backflow Preventer Insulation Cover 24 x 24in for Winter Pipe Freeze Protection $18.94

$1894
current price $18.94SELIVO Backflow Preventer Insulation Cover 24 x 24in for Winter Pipe Freeze Protection
The Bosworth Co., Foot/Check Valve for Guzzler 400, Barbed, 3/4" $27.40

Sponsored
$2740
current price $27.40The Bosworth Co., Foot/Check Valve for Guzzler 400, Barbed, 3/4"
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
Clearance Backflow Preventer Insulation Cover, Outdoor Pipe Insulation Covers Winter Freeze Protection, Sturdy Insulated Cover Pouch for Irrigation Sprinkler Well Pump From $7.30
From$730
Backflow Preventer Insulation Cover, Outdoor Pipe Insulation Covers Winter Freeze Protection, Sturdy Insulated Cover Pouch for Irrigation Sprinkler Well Pump
Backflow Preventer, Floor Drain Valve, Shower Drain Accessory, Insect and Odor Blocker, Home Drainage Solution From $2.22
From$222
Backflow Preventer, Floor Drain Valve, Shower Drain Accessory, Insect and Odor Blocker, Home Drainage Solution
MISSMILE Backflow Preventer Insulation Cover Insulated Pouch for Winter Pipe Freeze Protection Irrigation Backflow Valve Waterproof Sprinkler Valve System Cover Pipe Insulation Bag for Outside $21.39

$2139
current price $21.39MISSMILE Backflow Preventer Insulation Cover Insulated Pouch for Winter Pipe Freeze Protection Irrigation Backflow Valve Waterproof Sprinkler Valve System Cover Pipe Insulation Bag for Outside
Efficient Backflow Stopper Backflow Prevention Device Plastic Material Was $25.19

Efficient Backflow Stopper Backflow Prevention Device Plastic Material
Nenesupply Silicone Backflow Protector Membrane Compatible with Spectra Backflow Protector Use on Spectra S2 Spectra S1 Spectra 9 Plus Replacement Parts for Spectra Pump Parts and Spectra S2 Parts $8.29
$829
current price $8.29Nenesupply Silicone Backflow Protector Membrane Compatible with Spectra Backflow Protector Use on Spectra S2 Spectra S1 Spectra 9 Plus Replacement Parts for Spectra Pump Parts and Spectra S2 Parts
Save with
Clearance One Way Floor Drain Backflow Preventer Valve Anti Odor Sewer Core Insert Bathroom Kitchen Shower Drain Stopper Anti Insect Smell Water Seal Protection Replacement Drainage Accessory Tool From $6.64
From$664
One Way Floor Drain Backflow Preventer Valve Anti Odor Sewer Core Insert Bathroom Kitchen Shower Drain Stopper Anti Insect Smell Water Seal Protection Replacement Drainage Accessory Tool
ICERUN Backflow Preventer Insulation Cover Insulated Pouch for Winter Pipe Freeze Protection Irrigation Backflow Valve $21.26

$2126
current price $21.26ICERUN Backflow Preventer Insulation Cover Insulated Pouch for Winter Pipe Freeze Protection Irrigation Backflow Valve
Disposable Drain Cover Stickers 50-Pack – Clog-Proof Hair Catcher for Shower, Sink & Bathroom Pipes, Adhesive Anti-Backflow Filter Screen (Gray, 3.94x3.94 Inch) From $6.87
From$687
Disposable Drain Cover Stickers 50-Pack – Clog-Proof Hair Catcher for Shower, Sink & Bathroom Pipes, Adhesive Anti-Backflow Filter Screen (Gray, 3.94x3.94 Inch)
Modern Leisure Basics Outdoor Sprinkler Backflow Preventer Cover, 30L x 26h, Black $20.88

$2088
current price $20.88Modern Leisure Basics Outdoor Sprinkler Backflow Preventer Cover, 30L x 26h, Black
15 out of 5 Stars. 1 reviews
Save with
Gnmfd Floor Drain Backflow Preventer One Way Shower Drain Valve Sewer Core for Bathroom Kitchen Basement Garage Odor Insect Prevention Easy Replacement for Broken or Worn Out Drains

Gnmfd Floor Drain Backflow Preventer One Way Shower Drain Valve Sewer Core for Bathroom Kitchen Basement Garage Odor Insect Prevention Easy Replacement for Broken or Worn Out Drains
PATLOLLAV Winter Backflow Insulated Cover,24x 24 Inch Outdoor Pipe Covers Winter Freeze Protection,Insulation Cover Pouch for Water Sprinkler Valve Box,Meter or Controller Backflow Preventers Was $10.97

PATLOLLAV Winter Backflow Insulated Cover,24x 24 Inch Outdoor Pipe Covers Winter Freeze Protection,Insulation Cover Pouch for Water Sprinkler Valve Box,Meter or Controller Backflow Preventers
SELIVO Heavy Duty Backflow Insulation Cover - Winter Pipe Freeze Protection, 5-Layer Thermal Wrap for Outdoor Sprinkler Systems & Valves, Easy Install, Black (15.7") $18.94

$1894
current price $18.94SELIVO Heavy Duty Backflow Insulation Cover - Winter Pipe Freeze Protection, 5-Layer Thermal Wrap for Outdoor Sprinkler Systems & Valves, Easy Install, Black (15.7")
Zenicham 8 Layers of 900D Backflow Preventer Insulation Cover with Reflective Strip, 24"×24", Black From $20.79

3 options
Available in additional 3 optionsFrom$2079
Zenicham 8 Layers of 900D Backflow Preventer Insulation Cover with Reflective Strip, 24"×24", Black
Save with
SELIVO Backflow Preventer Insulation Cover Coffee Color 24x 24in Backflow Preventer Cover for Winter Pipe Freeze Protection $21.71

$2171
current price $21.71SELIVO Backflow Preventer Insulation Cover Coffee Color 24x 24in Backflow Preventer Cover for Winter Pipe Freeze Protection
EARKITY Outdoor Faucet Cover for Winter, Backflow Insulation Cover, Hose Bib Cover, Anti-Freeze Cover, Faucet Insulation Bag for Winter Outdoor Freeze Protection Reflective Strips
EARKITY Outdoor Faucet Cover for Winter, Backflow Insulation Cover, Hose Bib Cover, Anti-Freeze Cover, Faucet Insulation Bag for Winter Outdoor Freeze Protection Reflective Strips
NFTIGB Drain Backflow Preventer Floor Drain Seal, Heavy Duty ABS and Silicone Core Plug Sewer Filter Screen to Keep Out Odor and Insect (1.69 x 1.54 x 2.76 inches / 4.3 x 3.9 x 7 cm) $9.04
$904
current price $9.04NFTIGB Drain Backflow Preventer Floor Drain Seal, Heavy Duty ABS and Silicone Core Plug Sewer Filter Screen to Keep Out Odor and Insect (1.69 x 1.54 x 2.76 inches / 4.3 x 3.9 x 7 cm)
Maymom Backflow Protector, Long Stem, for Spectra Pumps to use Medela Flanges and Medela Flange; 2pc $12.99

$1299
current price $12.99Maymom Backflow Protector, Long Stem, for Spectra Pumps to use Medela Flanges and Medela Flange; 2pc
Save with
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
Yoloke 24 Insulated Backflow Preventer Cover - 6-Layer Fabric, Durable & Waterproof Protection for Outdoor Water Well Pump & Sprinkler Systems

Yoloke 24 Insulated Backflow Preventer Cover - 6-Layer Fabric, Durable & Waterproof Protection for Outdoor Water Well Pump & Sprinkler Systems
harmtty Floor Drainer One-way Drainage Double Blockade Anti-odor Shower Floor Drain Backflow Preventer Valve Sewer Core for Bathroom,White

harmtty Floor Drainer One-way Drainage Double Blockade Anti-odor Shower Floor Drain Backflow Preventer Valve Sewer Core for Bathroom,White
32.3 out of 5 Stars. 3 reviews
moweiyu Backflow Preventer Cover Insulated for Pipes with Aluminum Foil, Backflow Insulation Cover with Cable Ties Black $14.65 Was $22.99

Now$1465
current price Now $14.65, Was $22.99$22.99
moweiyu Backflow Preventer Cover Insulated for Pipes with Aluminum Foil, Backflow Insulation Cover with Cable Ties Black
Clearance Backflow Preventer Insulated Pipe Cover (5F) Thick 6-Layer Fabric Insulation (UV Coated) Winter Freeze Protection, for Water Well Pump Covers And Sprinkler (24"W x 24"H) From $12.29
From$1229
Backflow Preventer Insulated Pipe Cover (5F) Thick 6-Layer Fabric Insulation (UV Coated) Winter Freeze Protection, for Water Well Pump Covers And Sprinkler (24"W x 24"H)
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
QSTDGVPW Dishwasher Air Entire Assembly Replacement Backflow Protection for Kitchen Sink silver From $12.99
From$1299
QSTDGVPW Dishwasher Air Entire Assembly Replacement Backflow Protection for Kitchen Sink silver
Heavy Duty Check Valves Anti Siphon Defense Leakproof Backflow Prevention Simple Installation for Plumbing $15.74

$1574
current price $15.74Heavy Duty Check Valves Anti Siphon Defense Leakproof Backflow Prevention Simple Installation for Plumbing
Backflow Preventer Insulation Cover for Irrigation Sprinkler and Water Well Pump Insulated Pouch with Weather Resistant Protection for Outdoor Pipes and Winterizing Systems Topliu

Backflow Preventer Insulation Cover for Irrigation Sprinkler and Water Well Pump Insulated Pouch with Weather Resistant Protection for Outdoor Pipes and Winterizing Systems Topliu
BinKFF Backflow Preventer Insulation Cover - 2 Way Opening Pipe Insulation Cover for Irrigation Valve, Sprinkler Cover for Outside - Winter Freeze Protection Backflow Cover

BinKFF Backflow Preventer Insulation Cover - 2 Way Opening Pipe Insulation Cover for Irrigation Valve, Sprinkler Cover for Outside - Winter Freeze Protection Backflow Cover
Backflow Preventer Pipe Insulation Cover (5掳F) - 7 Layers Insulated Cover Pouch for Irrigation Backflow Valve, Sprinkler Valves in Snow or Sun Exposure, Winterizing Backflow Preventers - Beige From $12.99

2 options
Available in additional 2 optionsFrom$1299
Backflow Preventer Pipe Insulation Cover (5掳F) - 7 Layers Insulated Cover Pouch for Irrigation Backflow Valve, Sprinkler Valves in Snow or Sun Exposure, Winterizing Backflow Preventers - Beige
15 out of 5 Stars. 1 reviews
Heavy Duty Backflow Insulation Cover - Winter Freeze Protection for Pipes Black

Heavy Duty Backflow Insulation Cover - Winter Freeze Protection for Pipes Black
Backflow Preventer Cover Insulated Faucet Cover Outdoor Pressure Vacuum Cover Winter Water Well Pump Covers Protects from Snow Sun $8.99

$899
current price $8.99Backflow Preventer Cover Insulated Faucet Cover Outdoor Pressure Vacuum Cover Winter Water Well Pump Covers Protects from Snow Sun
74.9 out of 5 Stars. 7 reviews
Save with
Backflow Preventer Insulated Cover 6 Layer Thick Winter Pipe Insulation for Outdoor Sprinklers and Water Well Pumps

Backflow Preventer Insulated Cover 6 Layer Thick Winter Pipe Insulation for Outdoor Sprinklers and Water Well Pumps
Heavy Duty Brass Check Valves Not Returning for Water Pipe Backflow Prevention $6.35

$635
current price $6.35Heavy Duty Brass Check Valves Not Returning for Water Pipe Backflow Prevention
Stable Backflow Prevention Check Valves Brass Construct Brass Check Valves Leak Proof Check Valves set for Water Systems $9.63

$963
current price $9.63Stable Backflow Prevention Check Valves Brass Construct Brass Check Valves Leak Proof Check Valves set for Water Systems
Reliable PVC Drain Cover with Smooth Water Flow and Backflow Prevention

Reliable PVC Drain Cover with Smooth Water Flow and Backflow Prevention
Popular in Backflow Protection
Related Products
P7940 Spline Black - 0.185 in. x 25 Ft.
P7940 Spline Black - 0.185 in. x 25 Ft.$19.92current price $19.92Uxcell Pipe Insulation Foam Tube Heat Preservation for Handle Grip Support 0.39 x 0.79 inch Black
Uxcell Pipe Insulation Foam Tube Heat Preservation for Handle Grip Support 0.39 x 0.79 inch Black$9.99current price $9.99Aeroflex 1/2 in Thick, Flexible EPDM Pipe Insulation, 6 ft Insulation Length - 300-AC3812
Aeroflex 1/2 in Thick, Flexible EPDM Pipe Insulation, 6 ft Insulation Length - 300-AC3812$19.10current price $19.10Imperial Manufacturing 7 in. Dia. Steel Pipe End Cap — Residential Use, Standard Application
Imperial Manufacturing 7 in. Dia. Steel Pipe End Cap — Residential Use, Standard Application$153.97current price $153.97Flex-Drain 54022 Flexible Expandable Drain Pipe, Perforated Black Polyethylene, 4 in. x 8 ft. - Quantity 1
Flex-Drain 54022 Flexible Expandable Drain Pipe, Perforated Black Polyethylene, 4 in. x 8 ft. - Quantity 1$26.41current price $26.41Pipe Insulation, 1-1/8" OD, 6 ft. L, EPDM, 1/2 in Wall 310-AC11812
Pipe Insulation, 1-1/8" OD, 6 ft. L, EPDM, 1/2 in Wall 310-AC11812$26.41current price $26.41Uxcell 1mm Dia Ceramic Insulation Tube Twin Bore Alumina Porcelain Pipe 10 Pcs
Uxcell 1mm Dia Ceramic Insulation Tube Twin Bore Alumina Porcelain Pipe 10 Pcs$5.99current price $5.99Armacell DGT21812S, Black 2-1/8 in, 6 ft Polyethylene Pipe Insulation, Pipe & Plumbing Tubing
Armacell DGT21812S, Black 2-1/8 in, 6 ft Polyethylene Pipe Insulation, Pipe & Plumbing Tubing$20.86current price $20.86Aeroflex Pipe Insulation, 2-1/8" OD, 6 ft. L, EPDM, 1 in Wall 518-AC21810
Aeroflex Pipe Insulation, 2-1/8" OD, 6 ft. L, EPDM, 1 in Wall 518-AC21810$87.51current price $87.51Pipe Insulation, 1-1/8" OD, 6 ft. L, NBR/PVC Based Elastomeric, 3/4 in Wall 6RXLO068278
Pipe Insulation, 1-1/8" OD, 6 ft. L, NBR/PVC Based Elastomeric, 3/4 in Wall 6RXLO068278$22.83current price $22.83Digmi Vinyl Skyline Short Sleeve T-Shirt
Digmi Vinyl Skyline Short Sleeve T-Shirt$18.23current price $18.23Flex-Drain 4'' X 12' Perforated Drainage Pipe
Flex-Drain 4'' X 12' Perforated Drainage Pipe$23.59current price $23.59ProFlex PEEL2-01C 1 in. IPS Underground Gas Elbow
ProFlex PEEL2-01C 1 in. IPS Underground Gas Elbow$70.94current price $70.94Reflectix Expansion Joint - Lightweight Plastic - 6" x 50' — Residential Use, Standard Application
Reflectix Expansion Joint - Lightweight Plastic - 6" x 50' — Residential Use, Standard Application$33.83current price $33.83Aeroflex Pipe Insulation, 6 ft. L, EPDM, 1/2 in Wall 340-AC65812
Aeroflex Pipe Insulation, 6 ft. L, EPDM, 1/2 in Wall 340-AC65812$124.67current price $124.67Oatey 1/2 in. to 1 in. 200 Polyethylene Pipe Guard
Oatey 1/2 in. to 1 in. 200 Polyethylene Pipe Guard$26.80current price $26.80
































