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  9. Backflow Preventers
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Backflow Preventers (651 items) - Page 2

Wilkins Backflow Preventer, 3/4" Size, F Flange, 175 psi 34-350
Wilkins

Backflow Preventer, 3/4" Size, F Flange, 175 psi

Zoro # G3952949
Mfr # 34-350
product price:  $317.99
/ea
Woodford Mfg 13/16 in. - 18 Special Threads x 3/4 in. Hose Threads Chrome Double-Check BP 50HF-CH
Woodford Mfg

13/16 in. - 18 Special Threads x 3/4 in. Hose Threads Chrome Double-Check BP

Zoro # G903527397
Mfr # 50HF-CH
product price:  $54.35
/ea
Watts Reduced Pressure Zone Backflow Preventer 1 LF909-QT-FS
Watts

Reduced Pressure Zone Backflow Preventer

Zoro # G211853928
Mfr # 1 LF909-QT-FS
product price:  $3,343.99
/ea
Apollo Valves Backflow, NPT x NPT, 3/4in, Forged Brass 4A4A44AM
Apollo Valves

Backflow, NPT x NPT, 3/4in, Forged Brass

Zoro # G3779006
Mfr # 4A4A44AM
product price:  $67.45
/ea
Watts Reduced Pressure Zone Backflow Preventer 3/4 LF909-QT-FS
Watts

Reduced Pressure Zone Backflow Preventer

Zoro # G011854064
Mfr # 3/4 LF909-QT-FS
product price:  $2,150.99
/ea
Apollo Valves Backflow Valve, Forged Brass, 1/2" Size 4ALF4A33AM
Apollo Valves

Backflow Valve, Forged Brass, 1/2" Size

Zoro # G1460903
Mfr # 4ALF4A33AM
product price:  $77.49
/ea
Watts Anti-Siphon Backflow Preventer, Watts 008 1/2 LF 008PCQT-1/2"
Watts

Anti-Siphon Backflow Preventer, Watts 008

Zoro # G0903262
Mfr # 1/2 LF 008PCQT-1/2"
product price:  $922.96
/ea
Legend Valve 1/2" T-459 BACKFLOW PREVENTER 115-113
Legend Valve

1/2" T-459 BACKFLOW PREVENTER

Zoro # G1783488
Mfr # 115-113
product price:  $61.99
/ea
Apollo Valves Double Check Valve Assembly, Size 3/4 In. 4ALF104A2F
Apollo Valves

Double Check Valve Assembly, Size 3/4 In.

Zoro # G5151562
Mfr # 4ALF104A2F
product price:  $247.99
/ea
Wilkins Backflow Preventer2"Size F Flange175 psi 2-350
Wilkins

Backflow Preventer2"Size F Flange175 psi

Zoro # G3952930
Mfr # 2-350
product price:  $1,077.99
/ea
Wilkins Backflow Preventer1"Size F Flange175 psi 1-350
Wilkins

Backflow Preventer1"Size F Flange175 psi

Zoro # G3952903
Mfr # 1-350
product price:  $349.99
/ea
Watts 3/8 In Lead-Free Dual Check Valve Backflow Preventer 0792076
Watts

3/8 In Lead-Free Dual Check Valve Backflow Preventer

Zoro # G412414881
Mfr # 0792076
product price:  $247.37
/ea
Legend Valve 4" S-641 BACKWATER W/ SLEEVE 202-264
Legend Valve

4" S-641 BACKWATER W/ SLEEVE

Zoro # G2836120
Mfr # 202-264
product price:  $77.79
/ea
Watts 3/4in Backflow Preventor 009-M3-QT 3/4IN
Watts

3/4in Backflow Preventor

Zoro # G015482416
Mfr # 009-M3-QT 3/4IN
product price:  $934.99
/ea
Legend Valve 2" S-640 PVC BACKWATER VALVE 202-252
Legend Valve

2" S-640 PVC BACKWATER VALVE

Zoro # G2836105
Mfr # 202-252
product price:  $40.85
/ea
Wilkins Reduced Pressure Principle Backflow Prev AG-4
Wilkins

Reduced Pressure Principle Backflow Prev

Zoro # G7737674
Mfr # AG-4
product price:  $136.99
/ea
Watts Reduced Pressure Zone, Watt009, 3/4in, FNPT 009M3-QT-SH
Watts

Reduced Pressure Zone, Watt009, 3/4in, FNPT

Zoro # G1686618
Mfr # 009M3-QT-SH
product price:  $812.99
/ea
Watts Reduced Pressure Zone, Watt009, 1/2in, FNPT 009-QT-SH
Watts

Reduced Pressure Zone, Watt009, 1/2in, FNPT

Zoro # G1686627
Mfr # 009-QT-SH
product price:  $642.99
/ea
Legend Valve 3/4" T-459 BACKFLOW PREVENTER 115-114
Legend Valve

3/4" T-459 BACKFLOW PREVENTER

Zoro # G1855037
Mfr # 115-114
product price:  $65.39
/ea
Watts Reduced Pressure Zone Backflow Preventer 3/4 LF009M3-QT-FS
Watts

Reduced Pressure Zone Backflow Preventer

Zoro # G711854036
Mfr # 3/4 LF009M3-QT-FS
product price:  $978.99
/ea
Woodford Manufacturing Dble-Chck Brass Backflow Prev, 1-1/8" -1 50HA-BR
Woodford Manufacturing

Dble-Chck Brass Backflow Prev, 1-1/8" -1

Zoro # G4691356
Mfr # 50HA-BR
product price:  $36.19
/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
Legend Valve 4" S-640 PVC BACKWATER VALVE 202-254
Legend Valve

4" S-640 PVC BACKWATER VALVE

Zoro # G2836330
Mfr # 202-254
product price:  $58.19
/ea
Watts Reduced Pressure Zone Assembly, 175 psi LF909-DNRS-FS
Watts

Reduced Pressure Zone Assembly, 175 psi

Zoro # G404393088
Mfr # LF909-DNRS-FS
product price:  $4,842.99
/ea
Legend Valve 1/2" S-459 BACKFLOW PRVENTER 115-117
Legend Valve

1/2" S-459 BACKFLOW PRVENTER

Zoro # G1780855
Mfr # 115-117
product price:  $50.15
/ea
Watts 3/4 In Lead-Free Reduced Pressure Zone Backflow Preventer Assembly 88004111
Watts

3/4 In Lead-Free Reduced Pressure Zone Backflow Preventer Assembly

Zoro # G512414903
Mfr # 88004111
product price:  $773.99
/ea
Febco Reduced Pressure Zone Backflow Preventer 1 825YA-QT-RP-FS
Febco

Reduced Pressure Zone Backflow Preventer

Zoro # G211853843
Mfr # 1 825YA-QT-RP-FS
product price:  $1,040.99
/ea
Watts Reduced Pressure Zone Backflow Preventer 1/2 LF009-QT-FS
Watts

Reduced Pressure Zone Backflow Preventer

Zoro # G611853894
Mfr # 1/2 LF009-QT-FS
product price:  $634.99
/ea
Apollo Valves Double Check Valve Assembly, Size 1 In. 4ALF105A2F
Apollo Valves

Double Check Valve Assembly, Size 1 In.

Zoro # G5151596
Mfr # 4ALF105A2F
product price:  $263.99
/ea
Apollo Valves Reduced Pressure Zone Backflow Preventer 4ALF208T2F
Apollo Valves

Reduced Pressure Zone Backflow Preventer

Zoro # G5151623
Mfr # 4ALF208T2F
product price:  $1,049.99
/ea
Watts Backflow Preventer, Size 3/4", 125 psi 3/4 8A
Watts

Backflow Preventer, Size 3/4", 125 psi

Zoro # G805303631
Mfr # 3/4 8A
product price:  $93.59
/ea
Apollo Valves Double Check Backflow Preventer, 1 in 4A105A2F
Apollo Valves

Double Check Backflow Preventer, 1 in

Zoro # G710436226
Mfr # 4A105A2F
product price:  $228.62
/ea
Wilkins Reduced Pressure Zone Backflow Preventer 4-375A
Wilkins

Reduced Pressure Zone Backflow Preventer

Zoro # G2220136
Mfr # 4-375A
product price:  $6,721.99
/ea
Jones Stephens 4in. PVC Backwater Valve with Extension Kit and Plastic Lid B04401K
Jones Stephens

4in. PVC Backwater Valve with Extension Kit and Plastic Lid

Zoro # G912109942
Mfr # B04401K
product price:  $87.65
/ea
Apollo Valves Double Check Backflow Preventer, 3/4 in 4A104A2F
Apollo Valves

Double Check Backflow Preventer, 3/4 in

Zoro # G509944130
Mfr # 4A104A2F
product price:  $203.99
/ea
Watts Backflow Preventor, 3" 3" LF009-NRS
Watts

Backflow Preventor, 3"

Zoro # G7275228
Mfr # 3" LF009-NRS
product price:  $5,145.99
/ea
Backflow Preventers (651 items) - Page 2
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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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