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
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
Search Feedback

Backflow Preventers (648 items) - Page 14

Wilkins W/Union Bv Non-Potable 3/4" 975Xl 34-975XLU
Wilkins

W/Union Bv Non-Potable 3/4" 975Xl

Zoro # G8668324
Mfr # 34-975XLU
product price:  $4,973.99
/ea
Wilkins Backflow Preventer, 1 1/2 in, FNPT 112-950XLT2
Wilkins

Backflow Preventer, 1 1/2 in, FNPT

Zoro # G408230068
Mfr # 112-950XLT2
product price:  $1,386.99
/ea
Watts Backflow Preventer, High Investment Level 1 LF800M4-QT-FZ
Watts

Backflow Preventer, High Investment Level

Zoro # G210090430
Mfr # 1 LF800M4-QT-FZ
product price:  $438.61
/ea
Wilkins Backflow Preventer, 2 in, FNPT 2-950XLTBFSS
Wilkins

Backflow Preventer, 2 in, FNPT

Zoro # G408230075
Mfr # 2-950XLTBFSS
product price:  $3,576.99
/ea
Watts Double check backflow preventer 1 1/4 007M2-QT-FZ
Watts

Double check backflow preventer

Zoro # G311853880
Mfr # 1 1/4 007M2-QT-FZ
product price:  $1,037.99
/ea
Watts Reduced Pressure Zone Backflow Preventer 3/4 LF009M3-QTw/press-FS
Watts

Reduced Pressure Zone Backflow Preventer

Zoro # G311853804
Mfr # 3/4 LF009M3-QTw/press-FS
product price:  $1,188.99
/ea
Watts Double check backflow preventer 3/4 LF007M3-QT-FZ-w/press
Watts

Double check backflow preventer

Zoro # G811853915
Mfr # 3/4 LF007M3-QT-FZ-w/press
product price:  $715.99
/ea
Wilkins Backflow Preventer, 1/2 in, FNPT 12-975XL3
Wilkins

Backflow Preventer, 1/2 in, FNPT

Zoro # G008230062
Mfr # 12-975XL3
product price:  $910.99
/ea
Apollo Valves Double Check Valve Assembly, NPT 4ALF107A2
Apollo Valves

Double Check Valve Assembly, NPT

Zoro # G5190263
Mfr # 4ALF107A2
product price:  $542.99
/ea
Watts Reduced Pressure Zone Backflow Preventer 1 LF007M1-QT-FZ
Watts

Reduced Pressure Zone Backflow Preventer

Zoro # G011853876
Mfr # 1 LF007M1-QT-FZ
product price:  $653.99
/ea
Wilkins Backflow Preventer1"Size F Flange175 psi 1-350XL
Wilkins

Backflow Preventer1"Size F Flange175 psi

Zoro # G3952879
Mfr # 1-350XL
product price:  $491.99
/ea
Watts Backflow Preventer, Size 1", 125 psi 1 188A
Watts

Backflow Preventer, Size 1", 125 psi

Zoro # G305303704
Mfr # 1 188A
product price:  $231.99
/ea
Wilkins Backflow Preventer, 1 in, FMTC x FNPT 1UFMX34UF-700XL
Wilkins

Backflow Preventer, 1 in, FMTC x FNPT

Zoro # G708230058
Mfr # 1UFMX34UF-700XL
product price:  $111.99
/ea
Wilkins Backflow Preventer, 1-1/4" Size, 175 psi 114-350XL
Wilkins

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

Zoro # G3952827
Mfr # 114-350XL
product price:  $1,192.99
/ea
Wilkins Backflow Preventer, 2 in, FNPT 2-975XL2SEU
Wilkins

Backflow Preventer, 2 in, FNPT

Zoro # G008230086
Mfr # 2-975XL2SEU
product price:  $2,886.99
/ea
Wilkins Double Check Backflow Preventer, SS 212-350AST
Wilkins

Double Check Backflow Preventer, SS

Zoro # G713342593
Mfr # 212-350AST
product price:  $3,958.99
/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
Wilkins Backflow Preventer, 3/4 in, FNPT 34-975XL2SAG
Wilkins

Backflow Preventer, 3/4 in, FNPT

Zoro # G508230012
Mfr # 34-975XL2SAG
product price:  $1,343.99
/ea
Wilkins Backflow Preventer, 1 1/2 in, FNPT 112-950XL3
Wilkins

Backflow Preventer, 1 1/2 in, FNPT

Zoro # G808230033
Mfr # 112-950XL3
product price:  $1,279.99
/ea
Watts Check Valve, 2 in Overall L LF6 1/2
Watts

Check Valve, 2 in Overall L

Zoro # G605303756
Mfr # LF6 1/2
product price:  $152.99
/ea
Wilkins Pressure Principle Backflow Preventer 12-375
Wilkins

Pressure Principle Backflow Preventer

Zoro # G013342583
Mfr # 12-375
product price:  $645.99
/ea
Wilkins Backflow Preventer, 1 1/4 in, FNPT 114-975XL3
Wilkins

Backflow Preventer, 1 1/4 in, FNPT

Zoro # G608230073
Mfr # 114-975XL3
product price:  $1,713.99
/ea
Wilkins Backflow Preventer, 1 1/4 in, FNPT 114-950XL3
Wilkins

Backflow Preventer, 1 1/4 in, FNPT

Zoro # G908230094
Mfr # 114-950XL3
product price:  $1,192.99
/ea
Apollo Valves Double Check Valve Assembly, NPT 4ALF106A2F
Apollo Valves

Double Check Valve Assembly, NPT

Zoro # G5151666
Mfr # 4ALF106A2F
product price:  $458.99
/ea
Wilkins Backflow Preventer, 1 in, FNPT 1-375S
Wilkins

Backflow Preventer, 1 in, FNPT

Zoro # G608230080
Mfr # 1-375S
product price:  $830.99
/ea
Wilkins 1-1/4in Union Fem Mtr Thread Inlt X 1in Fem NPT Outlt LF Fire Protctn Dual Check 114UFMX1F-700XLFP
Wilkins

1-1/4in Union Fem Mtr Thread Inlt X 1in Fem NPT Outlt LF Fire Protctn Dual Check

Zoro # G715797155
Mfr # 114UFMX1F-700XLFP
product price:  $383.99
/ea
Spears Backwater Valve, 2 In., PVC, 120 Deg F S275P-AK
Spears

Backwater Valve, 2 In., PVC, 120 Deg F

Zoro # G5065636
Mfr # S275P-AK
product price:  $193.44
/ea
Watts Double CheckValve, Watt774, 10in, 53-3/4inH 774-OSY
Watts

Double CheckValve, Watt774, 10in, 53-3/4inH

Zoro # G2199270
Mfr # 774-OSY
product price:  $18,781.99
/ea
Wilkins 4in 450 DC SS Body N Pattern NRS Gates Flng X Flng 4-450ST
Wilkins

4in 450 DC SS Body N Pattern NRS Gates Flng X Flng

Zoro # G315797173
Mfr # 4-450ST
product price:  $8,691.99
/ea
Wilkins 1in 975XL2 w/ Relief Valve Monitor Switch Lead Free 1-975XL2MS
Wilkins

1in 975XL2 w/ Relief Valve Monitor Switch Lead Free

Zoro # G115797175
Mfr # 1-975XL2MS
product price:  $3,093.99
/ea
Watts Backflow Preventer, Size 1 1/4", 125 psi 1 1/4 LF288AM2
Watts

Backflow Preventer, Size 1 1/4", 125 psi

Zoro # G305303742
Mfr # 1 1/4 LF288AM2
product price:  $732.99
/ea
Watts Fill Valve/Backflow Prvntr, 1/2", 0386462 0386462
Watts

Fill Valve/Backflow Prvntr, 1/2", 0386462

Zoro # G9548773
Mfr # 0386462
product price:  $401.99
/ea
Watts Double Check Valve, Watt774, 10in, Flanged 774-NRS
Watts

Double Check Valve, Watt774, 10in, Flanged

Zoro # G2199340
Mfr # 774-NRS
product price:  $21,714.99
/ea
Wilkins 8in 450 DC SS Body N Pattern NRS Gates Flng X Flng 8-450ST
Wilkins

8in 450 DC SS Body N Pattern NRS Gates Flng X Flng

Zoro # G915797153
Mfr # 8-450ST
product price:  $22,052.99
/ea
Wilkins 2in 950 DCDA Bfly w/Switch Less Mtr NPT Top Access Non Potable 2-950XLTDABFSSLM
Wilkins

2in 950 DCDA Bfly w/Switch Less Mtr NPT Top Access Non Potable

Zoro # G015797169
Mfr # 2-950XLTDABFSSLM
product price:  $4,958.99
/ea
Sioux Chief 4 in. Abs Backwater Valve 4366720
Sioux Chief

4 in. Abs Backwater Valve

Zoro # G716340961
Mfr # 4366720
product price:  $61.85
/ea
Backflow Preventers (648 items) - Page 14
  • First
  • Previous
  • 14
    of 18 pages
  • Next
  • Last

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 ValvesSolenoid ValvesValve PartsCamlock Fittings
Copper FittingsPVC Pipe FittingsPress-Fit Tube FittingsBrass Pipe FittingsPipe & Tube Clamps
double checkbackflow check preventer4 in backflow preventerbackflow preventersizehose connection vacuum breaker
4 in no hubwatts back-flow preventerbackflow check175 psi pressure switch1-1/2 in backflow 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

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