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  1. Home
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  5. Pipes, Valves & Fittings
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  7. Valves
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  9. Backflow Preventers
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Backflow Preventers (650 items) - Page 4

Watts Double Check Valve, Watts709, 4in, Flanged LF709-NRS
Watts

Double Check Valve, Watts709, 4in, Flanged

Zoro # G2199499
Mfr # LF709-NRS
product price:  $6,362.99
/ea
Watts Double Check Valve, Watts709, 8in, Flanged LF709-OSY
Watts

Double Check Valve, Watts709, 8in, Flanged

Zoro # G2199410
Mfr # LF709-OSY
product price:  $19,424.99
/ea
Watts Double Check Valve, Watts709, 3in, Flanged LF709-NRS
Watts

Double Check Valve, Watts709, 3in, Flanged

Zoro # G2199508
Mfr # LF709-NRS
product price:  $4,995.99
/ea
Wilkins Backflow Preventer, 2 in, FNPT 2-975XL3
Wilkins

Backflow Preventer, 2 in, FNPT

Zoro # G508230067
Mfr # 2-975XL3
product price:  $1,910.99
/ea
Watts Backflow Preventer, Size 3/4", 125 psi 3/4 NF8
Watts

Backflow Preventer, Size 3/4", 125 psi

Zoro # G405303604
Mfr # 3/4 NF8
product price:  $88.59
/ea
Watts Backflow Preventer, Size 3/8", 200 psi 3/8 SD2-MN
Watts

Backflow Preventer, Size 3/8", 200 psi

Zoro # G705303670
Mfr # 3/8 SD2-MN
product price:  $334.99
/ea
Wilkins Backflow Preventer, 1 in, FNPT 1-950XL3
Wilkins

Backflow Preventer, 1 in, FNPT

Zoro # G808230071
Mfr # 1-950XL3
product price:  $491.99
/ea
Watts DoubleCheckDetector, 709DCDA, 6in, Flanged 709DCDA-OSY-CFM
Watts

DoubleCheckDetector, 709DCDA, 6in, Flanged

Zoro # G2199185
Mfr # 709DCDA-OSY-CFM
product price:  $8,955.99
/ea
Watts Backflow Preventer, Size 1 1/2", 175 psi 1 1/2 LF009M2-QT-S
Watts

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

Zoro # G205303668
Mfr # 1 1/2 LF009M2-QT-S
product price:  $1,781.99
/ea
Febco Reduced Pressure Zone Backflow Preventer 825 YA 2
Febco

Reduced Pressure Zone Backflow Preventer

Zoro # G2185583
Mfr # 825 YA 2
product price:  $2,207.99
/ea
Febco Reduced Pressure Zone Backflow Preventer 825 YA 1 1/2
Febco

Reduced Pressure Zone Backflow Preventer

Zoro # G3130145
Mfr # 825 YA 1 1/2
product price:  $1,901.99
/ea
Wilkins Backflow Preventer, 1-1/2" Size, 175 psi 112-350
Wilkins

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

Zoro # G3952650
Mfr # 112-350
product price:  $956.99
/ea
Watts Backflow Preventer, Size 1/2", 175 psi 1/2X1/2 LF7RU2-U2
Watts

Backflow Preventer, Size 1/2", 175 psi

Zoro # G405303598
Mfr # 1/2X1/2 LF7RU2-U2
product price:  $135.99
/ea
Wilkins Reduced Pressure Zone Backflow Preventer 14-975XL2
Wilkins

Reduced Pressure Zone Backflow Preventer

Zoro # G5064403
Mfr # 14-975XL2
product price:  $870.99
/ea
Jones Stephens 4in. ABS Backwater Valve with Extension Kit and Cast Iron Lid B05400K
Jones Stephens

4in. ABS Backwater Valve with Extension Kit and Cast Iron Lid

Zoro # G412105550
Mfr # B05400K
product price:  $61.35
/ea
Watts Backflow Preventer, Size 3/4", 175 psi 3/4X3/4 LF7RU2-U2
Watts

Backflow Preventer, Size 3/4", 175 psi

Zoro # G905303609
Mfr # 3/4X3/4 LF7RU2-U2
product price:  $164.99
/ea
Moen Air Gap Black Stainless 105895BLS
Moen

Air Gap Black Stainless

Zoro # G900916644
Mfr # 105895BLS
product price:  $33.49
/ea
Wilkins Backflow Preventer, 1 in, FNPT 1-950XLT
Wilkins

Backflow Preventer, 1 in, FNPT

Zoro # G608230066
Mfr # 1-950XLT
product price:  $419.99
/ea
Legend Valve 3" S-641 BACKWATER W/SLEEVE 202-263
Legend Valve

3" S-641 BACKWATER W/SLEEVE

Zoro # G2836324
Mfr # 202-263
product price:  $58.55
/ea
Wilkins Reduced Pressure Zone Backflow Preventer 114-975XL
Wilkins

Reduced Pressure Zone Backflow Preventer

Zoro # G1170802
Mfr # 114-975XL
product price:  $1,513.99
/ea
Jones Stephens 4in. ABS Backwater Valve B05400
Jones Stephens

4in. ABS Backwater Valve

Zoro # G412105451
Mfr # B05400
product price:  $48.89
/ea
Watts Backflow Preventer, Size 3/8", 200 psi 3/8 SD2-FN
Watts

Backflow Preventer, Size 3/8", 200 psi

Zoro # G305303698
Mfr # 3/8 SD2-FN
product price:  $305.99
/ea
Wilkins Reduced Pressure Zone Backflow Preventer 34-375
Wilkins

Reduced Pressure Zone Backflow Preventer

Zoro # G3184571
Mfr # 34-375
product price:  $658.99
/ea
Jones Stephens Dual Check Backflow Preventer, 1", No lead B59002LF
Jones Stephens

Dual Check Backflow Preventer, 1", No lead

Zoro # G5439618
Mfr # B59002LF
product price:  $45.99
/ea
Watts 3/4 In Lead-Free Double Check Valve Backflow Preventer Assembly 0063231
Watts

3/4 In Lead-Free Double Check Valve Backflow Preventer Assembly

Zoro # G812414931
Mfr # 0063231
product price:  $474.98
/ea
Watts Backflow Preventer, High Investment Level 1 LF919-QT-S-FS
Watts

Backflow Preventer, High Investment Level

Zoro # G810090496
Mfr # 1 LF919-QT-S-FS
product price:  $1,499.99
/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
Wilkins Backflow Preventer, 2 in, FNPT 2-975XL2S
Wilkins

Backflow Preventer, 2 in, FNPT

Zoro # G908230063
Mfr # 2-975XL2S
product price:  $2,602.99
/ea
Wilkins Reduced Pressure Zone Backflow Preventer 112-975XL2
Wilkins

Reduced Pressure Zone Backflow Preventer

Zoro # G5064507
Mfr # 112-975XL2
product price:  $1,993.99
/ea
Wilkins Xt-35 - Thermal Expansion Tank XT-35
Wilkins

Xt-35 - Thermal Expansion Tank

Zoro # G7737342
Mfr # XT-35
product price:  $524.99
/ea
Wilkins Double Check Backflow Preventer 4-350A
Wilkins

Double Check Backflow Preventer

Zoro # G613342532
Mfr # 4-350A
product price:  $6,423.99
/ea
Apollo Valves Dual Check Backflow Preventer, 3/8 in 4C10202A
Apollo Valves

Dual Check Backflow Preventer, 3/8 in

Zoro # G610437033
Mfr # 4C10202A
product price:  $109.99
/ea
Apollo Valves Double Check Backflow Preventer, 1 1/2 in 4A107A2F
Apollo Valves

Double Check Backflow Preventer, 1 1/2 in

Zoro # G409843496
Mfr # 4A107A2F
product price:  $504.99
/ea
Watts Reduced Pressure Zone, 994, 3in, Flanged 994-NRS
Watts

Reduced Pressure Zone, 994, 3in, Flanged

Zoro # G2198957
Mfr # 994-NRS
product price:  $4,607.99
/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 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
Backflow Preventers (650 items) - Page 4
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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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