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  1. Home
  2. /
  3. Plumbing
  4. /
  5. Pipes, Valves & Fittings
  6. /
  7. Valves
  8. /
  9. Backflow Preventers

Backflow Preventers (624 items)

Watts Comb Fill Valve/Backflow Preventor, 1/2In B911S-M3
Watts

Comb Fill Valve/Backflow Preventor, 1/2In

Zoro # G5308721
Mfr # B911S-M3
product price:  $174.99
/ea
Apollo Valves Reduced Pressure Zone Backflow Preventer 4ALF204A2F
Apollo Valves

Reduced Pressure Zone Backflow Preventer

Zoro # G5298605
Mfr # 4ALF204A2F
product price:  $409.99
/ea
Apollo Valves Reduced Pressure Zone Backflow Preventer 4ALF205A2F
Apollo Valves

Reduced Pressure Zone Backflow Preventer

Zoro # G5151657
Mfr # 4ALF205A2F
product price:  $494.99
/ea
Watts Backflow Preventer, Size 1/2", 175 psi 1/2 009-QT
Watts

Backflow Preventer, Size 1/2", 175 psi

Zoro # G205303613
Mfr # 1/2 009-QT
product price:  $580.99
/ea
Watts Backflow Preventer, Size 2", 175 psi 2 009M2-QT
Watts

Backflow Preventer, Size 2", 175 psi

Zoro # G605303626
Mfr # 2 009M2-QT
product price:  $1,715.99
/ea
Watts Reduced Pressure Zone Assembly, 175 psi LF909-DNRS-FS
Watts

Reduced Pressure Zone Assembly, 175 psi

Zoro # G304393133
Mfr # LF909-DNRS-FS
product price:  $4,797.99
/ea
Wilkins Backflow Preventer, 3/4 in, Bronze 34-975XLD
Wilkins

Backflow Preventer, 3/4 in, Bronze

Zoro # G508230111
Mfr # 34-975XLD
product price:  $506.99
/ea
Watts Internal Backwater Valve, 2 In Pipe Dia BV-1002
Watts

Internal Backwater Valve, 2 In Pipe Dia

Zoro # G0520204
Mfr # BV-1002
product price:  $35.49
/ea
Wilkins Reduced Pressure Zone Backflow Preventer 1-975XL
Wilkins

Reduced Pressure Zone Backflow Preventer

Zoro # G1942735
Mfr # 1-975XL
product price:  $816.99
/ea
Watts Comb Fill Valve/Backflow Preventor, 1/2In B911-M3
Watts

Comb Fill Valve/Backflow Preventor, 1/2In

Zoro # G5308712
Mfr # B911-M3
product price:  $201.99
/ea
Watts Reduced Pressure Zone Assembly, 175 psi LF909-DNRS-FS
Watts

Reduced Pressure Zone Assembly, 175 psi

Zoro # G404393118
Mfr # LF909-DNRS-FS
product price:  $4,189.99
/ea
Watts Internal Backwater Valve, 4 In Pipe Dia BV-1004
Watts

Internal Backwater Valve, 4 In Pipe Dia

Zoro # G2212131
Mfr # BV-1004
product price:  $50.79
/ea
Clean Check Backwater Valve, Slip Connection, 4" Pipe 97034
Clean Check

Backwater Valve, Slip Connection, 4" Pipe

Zoro # G4016472
Mfr # 97034
product price:  $318.83
/ea
Wilkins Reduced Pressure Zone Backflow Preventer 2-975XL
Wilkins

Reduced Pressure Zone Backflow Preventer

Zoro # G0919502
Mfr # 2-975XL
product price:  $1,674.99
/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 Reduced Pressure Zone Assembly, 175 psi LF909-DOSY-FS
Watts

Reduced Pressure Zone Assembly, 175 psi

Zoro # G204393134
Mfr # LF909-DOSY-FS
product price:  $4,455.99
/ea
Watts Reduced Pressure Zone Assembly, 175 psi LF909-DOSY-FS
Watts

Reduced Pressure Zone Assembly, 175 psi

Zoro # G804393145
Mfr # LF909-DOSY-FS
product price:  $5,774.99
/ea
Wilkins Reduced Pressure Zone Backflow Preventer 112-975XL
Wilkins

Reduced Pressure Zone Backflow Preventer

Zoro # G2612714
Mfr # 112-975XL
product price:  $1,561.99
/ea
Apollo Valves Reduced Pressure Zone Backflow Preventer 4ALF203A2F
Apollo Valves

Reduced Pressure Zone Backflow Preventer

Zoro # G5298702
Mfr # 4ALF203A2F
product price:  $471.99
/ea
Watts Reduced Pressure Zone Backflow Preventer 1 LF009M2-QT-S
Watts

Reduced Pressure Zone Backflow Preventer

Zoro # G4613621
Mfr # 1 LF009M2-QT-S
product price:  $752.99
/ea
Watts Backflow Preventer, Size 1 1/2", 175 psi 1 1/2 009M2-QT
Watts

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

Zoro # G505303665
Mfr # 1 1/2 009M2-QT
product price:  $1,586.99
/ea
Woodford Mfg 1-1/8 in. - 18 Special Threads x 3/4 in. Hose Threads Chrome Double-Check BP 50HA-CH
Woodford Mfg

1-1/8 in. - 18 Special Threads x 3/4 in. Hose Threads Chrome Double-Check BP

Zoro # G603527345
Mfr # 50HA-CH
product price:  $34.79
/ea
Watts Backflow Preventer, Size 2", 175 psi 2 LF009M2-QT-S
Watts

Backflow Preventer, Size 2", 175 psi

Zoro # G905303678
Mfr # 2 LF009M2-QT-S
product price:  $1,811.99
/ea
Wilkins Reduced Pressure Zone Backflow Preventer 1-375
Wilkins

Reduced Pressure Zone Backflow Preventer

Zoro # G2689653
Mfr # 1-375
product price:  $695.99
/ea
Wilkins Reduced Pressure Zone Backflow Preventer 34-975XL
Wilkins

Reduced Pressure Zone Backflow Preventer

Zoro # G0620112
Mfr # 34-975XL
product price:  $768.99
/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
Wilkins Reduced Pressure Zone Backflow Preventer 2-975XL2
Wilkins

Reduced Pressure Zone Backflow Preventer

Zoro # G5064455
Mfr # 2-975XL2
product price:  $2,212.99
/ea
Watts Backflow Preventer, Size 3/4", 175 psi 3/4 009M3-QT
Watts

Backflow Preventer, Size 3/4", 175 psi

Zoro # G105303683
Mfr # 3/4 009M3-QT
product price:  $733.99
/ea
Watts Backflow Preventer, Size 1 1/4", 175 psi 1 1/4 LF009M2-QT
Watts

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

Zoro # G505303610
Mfr # 1 1/4 LF009M2-QT
product price:  $1,396.99
/ea
Watts Reduced Pressure Zone Backflow Preventer 009M2QTS-3/4"
Watts

Reduced Pressure Zone Backflow Preventer

Zoro # G0718952
Mfr # 009M2QTS-3/4"
product price:  $621.99
/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
Wilkins Reduced Pressure Zone Backflow Preventer 1-975XL2
Wilkins

Reduced Pressure Zone Backflow Preventer

Zoro # G5064446
Mfr # 1-975XL2
product price:  $1,139.99
/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:  $713.99
/ea
Wilkins Backflow Preventer, 3/8" Size, FNPT, 150psi 38-740F
Wilkins

Backflow Preventer, 3/8" Size, FNPT, 150psi

Zoro # G3952842
Mfr # 38-740F
product price:  $237.99
/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
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
Backflow Preventers (624 items)
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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.

Related Categories

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175 psi pressure switch1 inch backflow4 in backflow preventer6" threaded pipe capbackflow preventersize
hose connection vacuum breakerwatts back-flow preventer1-1/2 in backflow preventerdouble checkbackflow check preventer

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