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  1. Home
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  7. Valves
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  9. Backflow Preventers
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Backflow Preventers (650 items) - Page 6

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 1 In Bronze Anti-Siphon Pressure Vacuum Breaker Backflow Preventer 0388002
Watts

1 In Bronze Anti-Siphon Pressure Vacuum Breaker Backflow Preventer

Zoro # G612414841
Mfr # 0388002
product price:  $334.14
/ea
Watts Double Check Valve, Watts709, 6in, Flanged LF709-OSY
Watts

Double Check Valve, Watts709, 6in, Flanged

Zoro # G2199429
Mfr # LF709-OSY
product price:  $11,333.99
/ea
Watts DoubleCheckDetector, 709DCDA, 3in, Flanged 709DCDA-OSY-GPM
Watts

DoubleCheckDetector, 709DCDA, 3in, Flanged

Zoro # G2199158
Mfr # 709DCDA-OSY-GPM
product price:  $7,428.99
/ea
Spears Backwater Valve, 6 In., PVC, 120 Deg F S675P-AK
Spears

Backwater Valve, 6 In., PVC, 120 Deg F

Zoro # G5065645
Mfr # S675P-AK
product price:  $930.99
/ea
Wilkins Backflow Preventer, 3/4 in, FNPT 34-950XL3
Wilkins

Backflow Preventer, 3/4 in, FNPT

Zoro # G708230072
Mfr # 34-950XL3
product price:  $448.99
/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:  $1,446.99
/ea
Watts Double Check Valve, Watts774, 8in, 44-1/2 774-OSY
Watts

Double Check Valve, Watts774, 8in, 44-1/2

Zoro # G2199289
Mfr # 774-OSY
product price:  $10,539.99
/ea
Watts Double Check Detector, 774, 6in, ShortLayL 774DCDA-OSY-GPM
Watts

Double Check Detector, 774, 6in, ShortLayL

Zoro # G2199009
Mfr # 774DCDA-OSY-GPM
product price:  $9,153.99
/ea
Febco Reduced Pressure Zone Backflow Preventer 1 1/2 LF825YA-QT-RP-FS
Febco

Reduced Pressure Zone Backflow Preventer

Zoro # G913990679
Mfr # 1 1/2 LF825YA-QT-RP-FS
product price:  $2,180.99
/ea
Wilkins W/Bv Non-Potable 1" 950Xl 1-950XL
Wilkins

W/Bv Non-Potable 1" 950Xl

Zoro # G7737449
Mfr # 1-950XL
product price:  $364.99
/ea
Watts Reduced Pressure Zone Backflow Preventer 1 1/2 LF909M1-QT-FS
Watts

Reduced Pressure Zone Backflow Preventer

Zoro # G711853954
Mfr # 1 1/2 LF909M1-QT-FS
product price:  $4,682.99
/ea
Watts Dual Check with Vent, Watt9BD, 3/8in, Flare 9BD
Watts

Dual Check with Vent, Watt9BD, 3/8in, Flare

Zoro # G1686721
Mfr # 9BD
product price:  $637.65
/ea
Watts Backflow Preventer, High Investment Level 1 1/2 LF919-QT-S-FS
Watts

Backflow Preventer, High Investment Level

Zoro # G610090504
Mfr # 1 1/2 LF919-QT-S-FS
product price:  $2,295.99
/ea
Wilkins Reduced Pressure Zone Backflow Preventer 112-375XL
Wilkins

Reduced Pressure Zone Backflow Preventer

Zoro # G5064437
Mfr # 112-375XL
product price:  $1,727.99
/ea
Wilkins W/Mtr/Nsfht Con 2" 975Lxl 2-975XLHBM
Wilkins

W/Mtr/Nsfht Con 2" 975Lxl

Zoro # G7737570
Mfr # 2-975XLHBM
product price:  $4,690.99
/ea
Wilkins Backflow Preventer, 1 in, FNPT 1-975XL3
Wilkins

Backflow Preventer, 1 in, FNPT

Zoro # G208230046
Mfr # 1-975XL3
product price:  $983.99
/ea
Clean Check Backwater Valve, Slip Connection, 4" Pipe 97014
Clean Check

Backwater Valve, Slip Connection, 4" Pipe

Zoro # G4016719
Mfr # 97014
product price:  $327.77
/ea
Wilkins Reduced Pressure Zone Backflow Preventer 114-375
Wilkins

Reduced Pressure Zone Backflow Preventer

Zoro # G2661513
Mfr # 114-375
product price:  $1,290.99
/ea
Wilkins Backflow Preventer, 1-1/2" Size, 175 psi 112-350XL
Wilkins

Backflow Preventer, 1-1/2" Size, 175 psi

Zoro # G3952623
Mfr # 112-350XL
product price:  $1,279.99
/ea
Wilkins Backflow Preventer, 1 in, FNPT 1-350XLFT
Wilkins

Backflow Preventer, 1 in, FNPT

Zoro # G908230087
Mfr # 1-350XLFT
product price:  $491.99
/ea
Wilkins Backflow Preventer, 3/4 in, FNPT 34-350XLFT
Wilkins

Backflow Preventer, 3/4 in, FNPT

Zoro # G708230065
Mfr # 34-350XLFT
product price:  $448.99
/ea
Wilkins Reduced Pressure Zone Backflow Preventer 34-375XL
Wilkins

Reduced Pressure Zone Backflow Preventer

Zoro # G5064491
Mfr # 34-375XL
product price:  $929.99
/ea
Watts Double Check Valve, Watts719, 1/2in, FNPT LF719-QT-S
Watts

Double Check Valve, Watts719, 1/2in, FNPT

Zoro # G1686697
Mfr # LF719-QT-S
product price:  $663.99
/ea
Wilkins Backflow Preventer, 1-1/2 in. Size, Bronze 112-375XLB
Wilkins

Backflow Preventer, 1-1/2 in. Size, Bronze

Zoro # G2373458
Mfr # 112-375XLB
product price:  $1,689.99
/ea
Wilkins Reduced Pressure Zone Backflow Preventer 112-375
Wilkins

Reduced Pressure Zone Backflow Preventer

Zoro # G1747392
Mfr # 112-375
product price:  $1,332.99
/ea
Apollo Valves Reduced Pressure Zone Backflow Preventer 4A204A2F
Apollo Valves

Reduced Pressure Zone Backflow Preventer

Zoro # G510436242
Mfr # 4A204A2F
product price:  $297.99
/ea
Spears Backwater Valve, 2 In., PVC, 120 Deg F S275P
Spears

Backwater Valve, 2 In., PVC, 120 Deg F

Zoro # G5065532
Mfr # S275P
product price:  $143.09
/ea
Watts Reduced Pressure Zone Assembly, 1/2in 1/2 LF009-QT-PRESS
Watts

Reduced Pressure Zone Assembly, 1/2in

Zoro # G3919750
Mfr # 1/2 LF009-QT-PRESS
product price:  $777.99
/ea
Watts Backflow Preventer, Size 1", 160 psi 1 LF07S
Watts

Backflow Preventer, Size 1", 160 psi

Zoro # G605303619
Mfr # 1 LF07S
product price:  $587.99
/ea
Watts Backflow Preventer, Size 1/2", 175 psi 1/2 9DS-M3
Watts

Backflow Preventer, Size 1/2", 175 psi

Zoro # G105303591
Mfr # 1/2 9DS-M3
product price:  $207.99
/ea
Watts Backflow Preventer, Size 1 1/2", 125 psi 1 1/2 LF288AM2
Watts

Backflow Preventer, Size 1 1/2", 125 psi

Zoro # G705303748
Mfr # 1 1/2 LF288AM2
product price:  $904.99
/ea
Watts Reduced Pressure Zone Backflow Preventer 1 1/4 LF909M1-QT-FS
Watts

Reduced Pressure Zone Backflow Preventer

Zoro # G611853825
Mfr # 1 1/4 LF909M1-QT-FS
product price:  $4,130.99
/ea
Watts Anti-Siphon Backflow Preventer, 6 1/2" L 3/4 LF800M4-QT-FZ
Watts

Anti-Siphon Backflow Preventer, 6 1/2" L

Zoro # G710854358
Mfr # 3/4 LF800M4-QT-FZ
product price:  $434.99
/ea
Watts Double Check Valve, Watts774, 3in, Flanged 774-OSY
Watts

Double Check Valve, Watts774, 3in, Flanged

Zoro # G2199316
Mfr # 774-OSY
product price:  $3,781.99
/ea
Watts Reduced Pressure Zone Backflow Preventer 957-OSY 21/2
Watts

Reduced Pressure Zone Backflow Preventer

Zoro # G0845056
Mfr # 957-OSY 21/2
product price:  $4,925.99
/ea
Backflow Preventers (650 items) - Page 6
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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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backflow checkdouble checkwatts back-flow preventer4 in no hub1 inch backflow

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