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
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
Cart Icon
0
Cart Icon
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 (624 items) - Page 4

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 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
Wilkins Double Check Backflow Preventer 6-350
Wilkins

Double Check Backflow Preventer

Zoro # G213342499
Mfr # 6-350
product price:  $9,264.99
/ea
Wilkins Double Check Backflow Preventer 3-350A
Wilkins

Double Check Backflow Preventer

Zoro # G113342551
Mfr # 3-350A
product price:  $4,922.99
/ea
Watts Double Check Valve, Watt709, 10in, Flanged LF709-OSY
Watts

Double Check Valve, Watt709, 10in, Flanged

Zoro # G2199401
Mfr # LF709-OSY
product price:  $30,439.99
/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
Wilkins Backflow Preventer, Wilkins 975XL2 Series 38-975XL2
Wilkins

Backflow Preventer, Wilkins 975XL2 Series

Zoro # G9967483
Mfr # 38-975XL2
product price:  $890.99
/ea
Watts Backflow Preventer, Size 1/2", 175 psi 1/2 LF009-QT-S
Watts

Backflow Preventer, Size 1/2", 175 psi

Zoro # G105303638
Mfr # 1/2 LF009-QT-S
product price:  $660.99
/ea
Watts Reduced Pressure Zone Backflow Preventer 3/4 LF009M3-QT-S-FS
Watts

Reduced Pressure Zone Backflow Preventer

Zoro # G111853851
Mfr # 3/4 LF009M3-QT-S-FS
product price:  $1,141.99
/ea
Watts Reduced pressure zone backflow preventer 11/2 LF009-QT-FS
Watts

Reduced pressure zone backflow preventer

Zoro # G314479698
Mfr # 11/2 LF009-QT-FS
product price:  $1,328.99
/ea
Wilkins Double Check Valve Assembly 2" 950Xl 2-950XL
Wilkins

Double Check Valve Assembly 2" 950Xl

Zoro # G7737823
Mfr # 2-950XL
product price:  $45,028.99
/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 Backflow Preventer, Size 3/4", 125 psi 3/4 LFNF8
Watts

Backflow Preventer, Size 3/4", 125 psi

Zoro # G905303692
Mfr # 3/4 LFNF8
product price:  $106.99
/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
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
Watts Double Check Valve Assembly, 1 in. Size 1 LF007M1-QT-PRESS
Watts

Double Check Valve Assembly, 1 in. Size

Zoro # G3919732
Mfr # 1 LF007M1-QT-PRESS
product price:  $609.99
/ea
Wilkins Backflow Preventer, 2 in, FNPT 2-950XL3
Wilkins

Backflow Preventer, 2 in, FNPT

Zoro # G408230037
Mfr # 2-950XL3
product price:  $1,442.99
/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 Reduced Pressure Zone Backflow Preventer 114-975XL
Wilkins

Reduced Pressure Zone Backflow Preventer

Zoro # G1170802
Mfr # 114-975XL
product price:  $1,513.99
/ea
Watts Backflow Preventer, Size 1", 175 psi 1 SS009-QT
Watts

Backflow Preventer, Size 1", 175 psi

Zoro # G905303616
Mfr # 1 SS009-QT
product price:  $5,187.99
/ea
Wilkins 2-950XLTDA - 2" 950XLTDA Double Check Detector Backflow Preventer 2-950XLTDA
Wilkins

2-950XLTDA - 2" 950XLTDA Double Check Detector Backflow Preventer

Zoro # G2390852
Mfr # 2-950XLTDA
product price:  $6,601.99
/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
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 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
Legend Valve 1-1/2 S-640 BACKWATER VALVE 202-251
Legend Valve

1-1/2 S-640 BACKWATER VALVE

Zoro # G2837450
Mfr # 202-251
product price:  $37.69
/ea
Watts 1 In Bronze Anti-Siphon Pressure Vacuum Breaker Backflow Preventer 0388002
Watts

1 In Bronze Anti-Siphon Pressure Vacuum Breaker Backflow Preventer

Zoro # G612414841
Mfr # 0388002
product price:  $334.14
/ea
Wilkins W/Bv Non-Potable 1" 950Xl 1-950XL
Wilkins

W/Bv Non-Potable 1" 950Xl

Zoro # G7737449
Mfr # 1-950XL
product price:  $491.99
/ea
Watts 1-1/2 In Lead-Free Double Check Backflow Preventer Assembly 0063234
Watts

1-1/2 In Lead-Free Double Check Backflow Preventer Assembly

Zoro # G012414830
Mfr # 0063234
product price:  $986.81
/ea
Watts Anti-Siphon Backflow Preventer, Watts 008 3/4 LF 008PCQT-3/4"
Watts

Anti-Siphon Backflow Preventer, Watts 008

Zoro # G0474853
Mfr # 3/4 LF 008PCQT-3/4"
product price:  $1,118.34
/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 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
Wilkins Reduced Pressure Zone Backflow Preventer 34-375
Wilkins

Reduced Pressure Zone Backflow Preventer

Zoro # G3184571
Mfr # 34-375
product price:  $658.99
/ea
Watts Backflow Preventer, Size 3/4", 175 psi 3/4 9DS-M2
Watts

Backflow Preventer, Size 3/4", 175 psi

Zoro # G005303622
Mfr # 3/4 9DS-M2
product price:  $212.99
/ea
Watts 3/4in Backflow Preventor Double Check 3/4 LF007M3-QT
Watts

3/4in Backflow Preventor Double Check

Zoro # G315482420
Mfr # 3/4 LF007M3-QT
product price:  $474.98
/ea
Febco Reduced Pressure Zone Backflow Preventer 1 1/2 LF825YA-QT-RP-FS
Febco

Reduced Pressure Zone Backflow Preventer

Zoro # G913990679
Mfr # 1 1/2 LF825YA-QT-RP-FS
product price:  $2,180.99
/ea
Watts DoubleCheckDetectorW/DomesticOSYShutoff 007DCDAOSY-GPM
Watts

DoubleCheckDetectorW/DomesticOSYShutoff

Zoro # G2199228
Mfr # 007DCDAOSY-GPM
product price:  $7,439.99
/ea
Backflow Preventers (624 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 ValvesCheck ValvesValve PartsBackflow Preventer Repair KitsPVC Pipe Fittings
Copper FittingsPipe & Tube ClampsCamlock FittingsPress-Fit Tube FittingsBrass Pipe Fittings
175 psi pressure switchbackflow preventersizedouble check1 inch backflowbackflow check
backflow check preventer6" threaded pipe cap1-1/2 in backflow preventer4 in backflow preventerhose connection vacuum breaker

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

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