Featured Categories

  • Tools & Machining
  • Shipping, Packaging & Office Supplies
  • Plumbing
  • Safety

Shop Categories

  • Abrasives & Polishers
  • Adhesives & Tapes
  • Electrical Supplies
  • Electronics
  • Fasteners
  • Food Service & Restaurant Supplies
  • Furniture, Linens & Decor
  • Grounds & Outdoor
  • Hardware & Building Materials
  • Heating & Cooling
  • Janitorial & Cleaning Supplies
  • Lab Equipment & Supplies
  • Lighting
  • Material Handling
  • Medical & Personal Care
  • Paint, Coatings & Supplies
  • Plumbing
  • Power Transmission
  • Pumps
  • Raw Materials
  • Safety
  • Shipping, Packaging & Office Supplies
  • Storage & Workspace
  • Test Instruments & Gauges
  • Tools & Machining
  • Vehicle Maintenance
  • Welding, Soldering & Brazing
  • About Us
  • Deals
  • Contact Us
Added to Cart
Skip to Main Content Accessibility Statement
FREE SHIPPING on orders over $50 after you . Restrictions Apply
Zoro Homepage
Close icon
Clipboard Icon Clipboard Icon Quick Order
User Headset Icon User Headset Icon Customer Service
0
0
Cart
  • Low prices on everyday needs. Shop Zoro Select
  • Don't miss these limited time offers. Shop All Deals
  • Get 30 days to pay with Net 30. Apply Now
  1. Home
  2. /
  3. Plumbing
  4. /
  5. Pipes, Valves & Fittings
  6. /
  7. Valves
  8. /
  9. Backflow Preventers

Backflow Preventers (621 items) - Page 4

Watts Reduced Pressure Zone Backflow Preventer 1/2 SS009M3QT
Watts

Reduced Pressure Zone Backflow Preventer

Zoro # G0711006
Mfr # 1/2 SS009M3QT
product price:  $2,749.99
/ea
Watts 1 IN Lead Free Double Check Valve Backflow Preventer Assembly T063232
Watts

1 IN Lead Free Double Check Valve Backflow Preventer Assembly

Zoro # G316501007
Mfr # T063232
product price:  $575.13
/ea
Watts Anti-Siphon Backflow Preventer, 6 1/2" L 3/4 800M4-QT-FZ
Watts

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

Zoro # G810854364
Mfr # 3/4 800M4-QT-FZ
product price:  $324.65
/ea
Watts Backflow Preventer, High Investment Level 3/4 LF919-QT-S-FS
Watts

Backflow Preventer, High Investment Level

Zoro # G710090442
Mfr # 3/4 LF919-QT-S-FS
product price:  $1,471.99
/ea
Watts Dual Check with Vent, Watts9BD, 3/8in, MNPT 9BD
Watts

Dual Check with Vent, Watts9BD, 3/8in, MNPT

Zoro # G1686706
Mfr # 9BD
product price:  $720.99
/ea
Wilkins Reduced Pressure Zone Backflow Preventer 2-375XL
Wilkins

Reduced Pressure Zone Backflow Preventer

Zoro # G5064421
Mfr # 2-375XL
product price:  $1,910.99
/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:  $4,826.99
/ea
Watts 1 1/2 IN Lead Free Double Check Valve Backflow Preventer Assembly T063234
Watts

1 1/2 IN Lead Free Double Check Valve Backflow Preventer Assembly

Zoro # G516501012
Mfr # T063234
product price:  $1,158.99
/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, 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
Wilkins Reduced Pressure Zone Backflow Preventer 212-375A
Wilkins

Reduced Pressure Zone Backflow Preventer

Zoro # G3425606
Mfr # 212-375A
product price:  $5,783.99
/ea
Watts Lead Free 1.5in Backflow Preventer LF009M2QT 1.5
Watts

Lead Free 1.5in Backflow Preventer

Zoro # G515674120
Mfr # LF009M2QT 1.5
product price:  $1,525.99
/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:  $654.99
/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 in, FNPT 1-950XL3
Wilkins

Backflow Preventer, 1 in, FNPT

Zoro # G808230071
Mfr # 1-950XL3
product price:  $491.99
/ea
Legend Valve 3/4" S-459 BACKFLOW PREVENTER 115-118
Legend Valve

3/4" S-459 BACKFLOW PREVENTER

Zoro # G1843496
Mfr # 115-118
product price:  $59.19
/ea
Wilkins Reduced Pressure Zone Backflow Preventer 12-375XL
Wilkins

Reduced Pressure Zone Backflow Preventer

Zoro # G5081991
Mfr # 12-375XL
product price:  $910.99
/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:  $9,702.99
/ea
Sioux Chief 869 Series ProCheck 4 Inch ABS and PVC Solvent Weld Backwater Valve 869-S4PS
Sioux Chief

869 Series ProCheck 4 Inch ABS and PVC Solvent Weld Backwater Valve

Zoro # G221718507
Mfr # 869-S4PS
product price:  $89.15
/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
Watts Backflow Preventer, Size 1 1/4", 175 psi 1 1/4 007M2-QT
Watts

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

Zoro # G705303649
Mfr # 1 1/4 007M2-QT
product price:  $970.99
/ea
Wilkins Backflow Preventer2"Size F Flange175 psi 2-350XL
Wilkins

Backflow Preventer2"Size F Flange175 psi

Zoro # G3952888
Mfr # 2-350XL
product price:  $1,442.99
/ea
Watts Backflow Preventer, Size 1 1/4", 150 psi 1 1/4 800M4-QT
Watts

Backflow Preventer, Size 1 1/4", 150 psi

Zoro # G505303603
Mfr # 1 1/4 800M4-QT
product price:  $881.99
/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
Zurn Bronze Backflow Preventer Valve 1 pc 1-975XL
Zurn

Bronze Backflow Preventer Valve 1 pc

Zoro # G305309652
Mfr # 1-975XL
product price:  $907.99
/ea
Watts Double Check Valve, Watts 719, 3/4in, FNPT LF719-QT-S
Watts

Double Check Valve, Watts 719, 3/4in, FNPT

Zoro # G1686688
Mfr # LF719-QT-S
product price:  $733.99
/ea
Watts DoubleCheckValve, 709, 2-1/2in, OSYShutoffs LF709-OSY
Watts

DoubleCheckValve, 709, 2-1/2in, OSYShutoffs

Zoro # G2199456
Mfr # LF709-OSY
product price:  $4,919.99
/ea
Watts ReducedPressureZone, 994, 2-1/2in, Flanged 994-NRS
Watts

ReducedPressureZone, 994, 2-1/2in, Flanged

Zoro # G2198966
Mfr # 994-NRS
product price:  $4,212.99
/ea
Wilkins Backflow Preventer, 1 1/2 in, FNPT 112-975XL3
Wilkins

Backflow Preventer, 1 1/2 in, FNPT

Zoro # G108230054
Mfr # 112-975XL3
product price:  $1,727.99
/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
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
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", 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
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:  $675.99
/ea
Zurn BACKFLOW PREVENTER QHWBP3
Zurn

BACKFLOW PREVENTER

Zoro # G015798821
Mfr # QHWBP3
product price:  $60.39
/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
Backflow Preventers (621 items) - Page 4
  • First
  • Previous
  • 4
    of 18 pages
  • Next
  • Last
How was your search?

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

Ball ValvesRelief ValvesSolenoid ValvesCheck ValvesPVC Pipe Fittings
Copper FittingsStainless Steel Pipe FittingsBlack Pipe FittingsPush-to-Connect Tube FittingsCompression Tube Fittings
175 psi pressure switch4 in backflow preventerbackflow checkwatts back-flow preventerbackflow preventersize
watts series 009 3/41-1/2 in backflow preventerhose connection vacuum breaker1 inch backflowbackflow check preventer

Sign up and save

Take 10% off your next order when you sign up for Zoro emails. Subscribe now to receive your promo code via email.

Follow us

  • Facebook
  • YouTube
  • LinkedIn
  • Instagram
Every part plays a part

Information

  • About Us
  • Accessibility
  • Careers
  • Inclusion
  • Giving Back
  • Resource Hub
  • Returns
  • Shipping

Shopping

  • Brands
  • Collections
  • My Account
  • Payments
  • Deals
  • Sitemap
  • Track My Order

Services

  • Customer Service
  • FAQs
  • Net 30 Terms
  • Reseller Program
  • Sell on Zoro
  • Participate in Research
  • Tax Exemption

Zoro, Inc

Connect

Customer service from real people

  • Phone: (855) 289-9676
  • Contact Us

© 2011-2026 Zoro Tools, Inc. All rights reserved.
  • Terms & Conditions
  • Terms of Access
  • Privacy Policy
Zoro, Inc