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  1. Home
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  3. Plumbing
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  5. Pipes, Valves & Fittings
  6. /
  7. Valves
  8. /
  9. Backflow Preventers

Backflow Preventers (622 items) - Page 8

Watts Backflow Preventer, Size 1", 175 psi 1X3/4 LF7RU4-3
Watts

Backflow Preventer, Size 1", 175 psi

Zoro # G705303601
Mfr # 1X3/4 LF7RU4-3
product price:  $163.99
/ea
Apollo Valves Reduced Pressure Zone Backflow Preventer 4A207A2F
Apollo Valves

Reduced Pressure Zone Backflow Preventer

Zoro # G2874645
Mfr # 4A207A2F
product price:  $637.99
/ea
Watts Double Check Valve, W774, 4in, 27-1/4inH 774-OSY
Watts

Double Check Valve, W774, 4in, 27-1/4inH

Zoro # G2199307
Mfr # 774-OSY
product price:  $6,249.99
/ea
Watts ReducedPressureZone, 994, 2-1/2in, Flanged 994-NRS
Watts

ReducedPressureZone, 994, 2-1/2in, Flanged

Zoro # G2198966
Mfr # 994-NRS
product price:  $4,212.99
/ea
Watts Backflow Preventer, Size 1 1/4", 150 psi 1 1/4 LF800M4-QT
Watts

Backflow Preventer, Size 1 1/4", 150 psi

Zoro # G305303766
Mfr # 1 1/4 LF800M4-QT
product price:  $898.00
/ea
Watts Lead Free .75 Backflow Preventer LF009M3QT .75
Watts

Lead Free .75 Backflow Preventer

Zoro # G515674083
Mfr # LF009M3QT .75
product price:  $727.99
/ea
Moen Air Switch Black Stainless AS-4201-BLS
Moen

Air Switch Black Stainless

Zoro # G600916197
Mfr # AS-4201-BLS
product price:  $24.78
/ea
Watts Double Check Detector, 774, 4in, 22-3/4inH 774DCDA-OSY-GPM
Watts

Double Check Detector, 774, 4in, 22-3/4inH

Zoro # G2199018
Mfr # 774DCDA-OSY-GPM
product price:  $6,073.99
/ea
Watts Double Check Detector, 12in, 53-1/8inH 774DCDA-OSY-GPM
Watts

Double Check Detector, 12in, 53-1/8inH

Zoro # G2198975
Mfr # 774DCDA-OSY-GPM
product price:  $29,317.99
/ea
Watts Double Check Detector, 007, 3in, Flanged 007DCDAOSY-CFM
Watts

Double Check Detector, 007, 3in, Flanged

Zoro # G2199246
Mfr # 007DCDAOSY-CFM
product price:  $7,329.99
/ea
Watts Double Check Detector, 10in, 45-3/4inH 774DCDA-OSY-GPM
Watts

Double Check Detector, 10in, 45-3/4inH

Zoro # G2198981
Mfr # 774DCDA-OSY-GPM
product price:  $25,833.99
/ea
Watts Double Check Valve, Watt774, 12in, Flanged 774-OSY
Watts

Double Check Valve, Watt774, 12in, Flanged

Zoro # G2199261
Mfr # 774-OSY
product price:  $33,218.99
/ea
Watts Dual Check with Vent, Watts9BD, 1/4in, MNPT 9BD
Watts

Dual Check with Vent, Watts9BD, 1/4in, MNPT

Zoro # G1686715
Mfr # 9BD
product price:  $659.99
/ea
Watts DoubleCheckDetector, 709DCDA, 8in, Flanged 709DCDA-OSY-GPM
Watts

DoubleCheckDetector, 709DCDA, 8in, Flanged

Zoro # G2199121
Mfr # 709DCDA-OSY-GPM
product price:  $23,191.99
/ea
Watts DoubleCheckDetector, 10in, Flanged 709DCDA-OSY-CFM
Watts

DoubleCheckDetector, 10in, Flanged

Zoro # G2199167
Mfr # 709DCDA-OSY-CFM
product price:  $29,538.99
/ea
Watts DoubleCheckDetector, 709DCDA, 8in, Flanged 709DCDA-OSY-CFM
Watts

DoubleCheckDetector, 709DCDA, 8in, Flanged

Zoro # G2199176
Mfr # 709DCDA-OSY-CFM
product price:  $18,931.99
/ea
Watts DoubleCheckDetector, 709DCDA, 6in, Flanged 709DCDA-OSY-GPM
Watts

DoubleCheckDetector, 709DCDA, 6in, Flanged

Zoro # G2199130
Mfr # 709DCDA-OSY-GPM
product price:  $13,032.99
/ea
Watts Double Check Detector, 774, 6in, Flanged 774DCDA-OSY-CFM
Watts

Double Check Detector, 774, 6in, Flanged

Zoro # G2199079
Mfr # 774DCDA-OSY-CFM
product price:  $8,971.99
/ea
Watts Double Check Valve, W709, 4in, 22-3/4inH LF709-OSY
Watts

Double Check Valve, W709, 4in, 22-3/4inH

Zoro # G2199438
Mfr # LF709-OSY
product price:  $7,647.99
/ea
Watts Backflow Preventer, Size 2", 150 psi 2 LF800M4-FR
Watts

Backflow Preventer, Size 2", 150 psi

Zoro # G405303734
Mfr # 2 LF800M4-FR
product price:  $1,703.99
/ea
Spears Backwater Valve, 4 In., PVC, 120 Deg F S475P-AK
Spears

Backwater Valve, 4 In., PVC, 120 Deg F

Zoro # G5065611
Mfr # S475P-AK
product price:  $269.42
/ea
Watts Dual Check with Vent, Watts9BD, 3/8in, MNPT 9BD
Watts

Dual Check with Vent, Watts9BD, 3/8in, MNPT

Zoro # G1686706
Mfr # 9BD
product price:  $720.99
/ea
No Product Image Available
Apollo Valves

Dual Check Backflow Preventer, 1/4 in

Zoro # G909984682
Mfr # 4C10101A
product price:  $109.99
/ea
Watts Backflow Preventer, Size 3/8", 150 psi 3/8 SD3-MN
Watts

Backflow Preventer, Size 3/8", 150 psi

Zoro # G005303653
Mfr # 3/8 SD3-MN
product price:  $495.99
/ea
Watts Anti-Siphon Backflow Preventer, Watts 008 1 LF 008PCQT-1"
Watts

Anti-Siphon Backflow Preventer, Watts 008

Zoro # G1310102
Mfr # 1 LF 008PCQT-1"
product price:  $901.99
/ea
Watts Backflow Preventer, Size 1", 175 psi 1X3/4 LF7R10-U2
Watts

Backflow Preventer, Size 1", 175 psi

Zoro # G905303623
Mfr # 1X3/4 LF7R10-U2
product price:  $171.99
/ea
Watts Double Check Valve Assembly, Watts 007 007M2QTS-3/4"
Watts

Double Check Valve Assembly, Watts 007

Zoro # G2302133
Mfr # 007M2QTS-3/4"
product price:  $409.99
/ea
Watts Backflow Preventer, Size 1/2", 150 psi 1/2 800M4-QT
Watts

Backflow Preventer, Size 1/2", 150 psi

Zoro # G005303592
Mfr # 1/2 800M4-QT
product price:  $449.99
/ea
Watts Check Valve, 2.125 in Overall L LF601 1/4
Watts

Check Valve, 2.125 in Overall L

Zoro # G805303686
Mfr # LF601 1/4
product price:  $203.99
/ea
Wilkins Backflow Preventer, 3/4 in, FNPT 34-975XL3
Wilkins

Backflow Preventer, 3/4 in, FNPT

Zoro # G708230089
Mfr # 34-975XL3
product price:  $929.99
/ea
Wilkins Backflow Preventer1"Size F Flange175 psi 1-350XL
Wilkins

Backflow Preventer1"Size F Flange175 psi

Zoro # G3952879
Mfr # 1-350XL
product price:  $491.99
/ea
Wilkins W/Ag-4 Lead Free 1" 975Xl2 1-975XL2AG
Wilkins

W/Ag-4 Lead Free 1" 975Xl2

Zoro # G7737379
Mfr # 1-975XL2AG
product price:  $894.99
/ea
Legend Valve 3/4" S-459 BACKFLOW PREVENTER 115-118
Legend Valve

3/4" S-459 BACKFLOW PREVENTER

Zoro # G1843496
Mfr # 115-118
product price:  $59.19
/ea
Watts 1 In Bronze Anti-Siphon Pressure Vacuum Breaker Backflow Preventer T388002
Watts

1 In Bronze Anti-Siphon Pressure Vacuum Breaker Backflow Preventer

Zoro # G912414831
Mfr # T388002
product price:  $351.99
/ea
Watts Backflow Preventer, High Investment Level 1 1/4 LF919-QT-S-FS
Watts

Backflow Preventer, High Investment Level

Zoro # G210090485
Mfr # 1 1/4 LF919-QT-S-FS
product price:  $1,443.99
/ea
Watts Backflow Preventer, Size 1 1/4", 175 psi 1 1/4 009M2-QT
Watts

Backflow Preventer, Size 1 1/4", 175 psi

Zoro # G705303656
Mfr # 1 1/4 009M2-QT
product price:  $1,348.99
/ea
Backflow Preventers (622 items) - Page 8
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About Backflow Preventers

Backflow preventers are essential plumbing devices used to protect potable water systems from contamination and pollution caused by backflow of non-potable water or other substances. The backflow preventer ensures that the water flows in only one direction, preventing any backflow of water from the plumbing system back into the water supply.

Types of Backflow Preventers

There are various types of backflow preventers available in the market, including reduced pressure zone (RPZ), double check valve (DC), and pressure vacuum breaker (PVB). Each type of backflow preventer has its unique features, making them suitable for different applications. The selection of the type of backflow preventer depends on various factors such as pipe size, connection type, body material, series, maximum pressure, and temperature range.

How Backflow Preventers are Made

Backflow preventers are made of various materials such as brass, stainless steel, and plastic. The body of the backflow preventer is designed to provide a reliable, long-lasting, and leak-proof seal. The internal components, such as the check valves and relief valves, are made of rubber, neoprene, or similar materials to ensure they function correctly. Backflow preventers are manufactured using advanced technologies and tested to ensure they meet the required performance standards.

Industries that use Backflow Preventers

Backflow preventers are widely used in various industries, including residential, commercial, industrial, and institutional applications. Plumbing contractors, engineers, and building maintenance personnel frequently use backflow preventers to ensure the safety and integrity of the water supply. Some of the industries that commonly use backflow preventers include water treatment plants, food and beverage processing plants, hospitals, and laboratories.

Find the Backflow Preventers You Need at Zoro

Looking for a specific item? Use our robust search tool to find it by name or keyword, or use our handy filters to narrow down our full assortment. You can also check out our whole selection of plumbing tools & supplies, along with other equipment and essentials to ensure you have all you need to tackle the job, especially if you're taking on a DIY project for the first time.
Plus, when you shop at Zoro, you'll always enjoy competitive prices on tons of great brands you know and trust. We make the shopping experience as fast and seamless as possible with free shipping on orders over $50 for registered users, Net 30 payment terms for qualifying customers, and an unparalleled customer service experience.

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