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  9. Backflow Preventers
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Backflow Preventers (650 items) - Page 8

Watts Backflow Preventer, Size 1/2", 150 psi 1/2 LF800M4-QT
Watts

Backflow Preventer, Size 1/2", 150 psi

Zoro # G505303757
Mfr # 1/2 LF800M4-QT
product price:  $527.99
/ea
Watts Backflow Preventer, Size 1 1/4", 175 psi 1 1/4 LF009M2-QT-S
Watts

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

Zoro # G805303679
Mfr # 1 1/4 LF009M2-QT-S
product price:  $1,608.99
/ea
Wilkins Double Check Backflow Preventer 3-350
Wilkins

Double Check Backflow Preventer

Zoro # G813342493
Mfr # 3-350
product price:  $4,922.99
/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
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
Spears Backwater Valve, 4 In., PVC, 120 Deg F S475P
Spears

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

Zoro # G5065593
Mfr # S475P
product price:  $189.78
/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
Wilkins Reduced Pressure Zone Backflow Preventer 114-975XL2
Wilkins

Reduced Pressure Zone Backflow Preventer

Zoro # G5064412
Mfr # 114-975XL2
product price:  $1,978.99
/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 Backflow Preventer, Size 3/4", 175 psi 3/4 SS009M3-QT
Watts

Backflow Preventer, Size 3/4", 175 psi

Zoro # G405303611
Mfr # 3/4 SS009M3-QT
product price:  $4,618.99
/ea
Wilkins Backflow Preventer, 2 in. Size, Bronze 2-375XLB
Wilkins

Backflow Preventer, 2 in. Size, Bronze

Zoro # G2373449
Mfr # 2-375XLB
product price:  $1,870.99
/ea
Febco Reduced Pressure Zone Backflow Preventer 3/4 825YA-QT-RP-FS
Febco

Reduced Pressure Zone Backflow Preventer

Zoro # G911854287
Mfr # 3/4 825YA-QT-RP-FS
product price:  $1,018.99
/ea
Legend Valve 2" S-641 BACKWATER W/SLEEVE 202-262
Legend Valve

2" S-641 BACKWATER W/SLEEVE

Zoro # G2836315
Mfr # 202-262
product price:  $42.45
/ea
Jones Stephens 1-1/2in. ABS Backwater Valve B05150
Jones Stephens

1-1/2in. ABS Backwater Valve

Zoro # G112109858
Mfr # B05150
product price:  $38.99
/ea
Watts Backflow Preventer, Size 1 1/2", 175 psi 1 1/2 LF007M2-QT-S
Watts

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

Zoro # G805303594
Mfr # 1 1/2 LF007M2-QT-S
product price:  $1,475.99
/ea
Watts Double Check Valve Assembly, Watts 757 4 757 OSY
Watts

Double Check Valve Assembly, Watts 757

Zoro # G1197804
Mfr # 4 757 OSY
product price:  $4,750.99
/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 Double CheckValve, Watts709, 8in, 19-15/16 LF709-NRS
Watts

Double CheckValve, Watts709, 8in, 19-15/16

Zoro # G2199471
Mfr # LF709-NRS
product price:  $8,792.99
/ea
Watts Reduced Pressure Zone, 994, 4in, Flanged 994-NRS
Watts

Reduced Pressure Zone, 994, 4in, Flanged

Zoro # G2198948
Mfr # 994-NRS
product price:  $5,523.99
/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 Dual Check with Vent, Watts9BD, 1/4in, MNPT 9BD
Watts

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

Zoro # G1686715
Mfr # 9BD
product price:  $733.99
/ea
Watts Backflow Preventer, Size 1/2", 100 psi 1/2 B911T-M3 (W/PRESS)
Watts

Backflow Preventer, Size 1/2", 100 psi

Zoro # G305303667
Mfr # 1/2 B911T-M3 (W/PRESS)
product price:  $392.99
/ea
Watts DoubleCheckValve, Watt709, 3in, 18-7/8inH LF709-OSY
Watts

DoubleCheckValve, Watt709, 3in, 18-7/8inH

Zoro # G2199447
Mfr # LF709-OSY
product price:  $6,106.99
/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 Backflow Preventer, Size 3/4", 125 psi 3/4 8P
Watts

Backflow Preventer, Size 3/4", 125 psi

Zoro # G505303597
Mfr # 3/4 8P
product price:  $20.61
/ea
Sold in mult. of 6 for $123.66
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 DoubleCheckDetector, 10in, Flanged 709DCDA-OSY-CFM
Watts

DoubleCheckDetector, 10in, Flanged

Zoro # G2199167
Mfr # 709DCDA-OSY-CFM
product price:  $29,538.99
/ea
Watts Double Check Valve Assembly, Watts 757 757 OSY 8
Watts

Double Check Valve Assembly, Watts 757

Zoro # G2432001
Mfr # 757 OSY 8
product price:  $15,325.99
/ea
Sioux Chief Sioux Chief 869-S4PPK ABS Backwater Valve  4 in. 4366738
Sioux Chief

Sioux Chief 869-S4PPK ABS Backwater Valve 4 in.

Zoro # G704031512
Mfr # 4366738
product price:  $70.19
/ea
Watts 1/2 In Lead-Free Reduced Pressure Zone Backflow Preventer Assembly 88004110
Watts

1/2 In Lead-Free Reduced Pressure Zone Backflow Preventer Assembly

Zoro # G712414888
Mfr # 88004110
product price:  $968.99
/ea
Jones Stephens 3in. ABS Backwater Valve with Extension Kit and Cast Iron Lid B05300K
Jones Stephens

3in. ABS Backwater Valve with Extension Kit and Cast Iron Lid

Zoro # G312105551
Mfr # B05300K
product price:  $78.99
/ea
Wilkins W/Bv 1 1/2" 950Xl 112-950XL
Wilkins

W/Bv 1 1/2" 950Xl

Zoro # G7737981
Mfr # 112-950XL
product price:  $949.99
/ea
Wilkins Wxtp-75V - Thermal Expansion Tank WXTP-75V
Wilkins

Wxtp-75V - Thermal Expansion Tank

Zoro # G7736904
Mfr # WXTP-75V
product price:  $1,197.99
/ea
No Product Image Available
Apollo Valves

Dual Check Backflow Preventer, 3/8 in

Zoro # G409935313
Mfr # 4C10201A
product price:  $109.99
/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
Apollo Valves Double Check Valve Assembly, Size 2 In. 4ALF108A2F
Apollo Valves

Double Check Valve Assembly, Size 2 In.

Zoro # G5151632
Mfr # 4ALF108A2F
product price:  $760.99
/ea
Backflow Preventers (650 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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