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
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 (622 items) - Page 17

Wilkins Backflow Preventer, 1-1/2 in. Size, Bronze 112-375XLB
Wilkins

Backflow Preventer, 1-1/2 in. Size, Bronze

Zoro # G2373458
Mfr # 112-375XLB
product price:  $1,689.99
/ea
Watts Double Check Detector, 774, 4in, 22-3/4inH 774DCDA-OSY-CFM
Watts

Double Check Detector, 774, 4in, 22-3/4inH

Zoro # G2199088
Mfr # 774DCDA-OSY-CFM
product price:  $5,576.99
/ea
Watts Double Check Detector, 774, 10in, Flanged 774DCDA-OSY-CFM
Watts

Double Check Detector, 774, 10in, Flanged

Zoro # G2199051
Mfr # 774DCDA-OSY-CFM
product price:  $19,661.99
/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
Watts Double Check Valve, Watts774, 8in, 26-11/16 774-NRS
Watts

Double Check Valve, Watts774, 8in, 26-11/16

Zoro # G2199359
Mfr # 774-NRS
product price:  $15,531.99
/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
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
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
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:  $3,048.99
/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 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
Wilkins Backflow Preventer, 1-1/4" Size, 175 psi 114-350
Wilkins

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

Zoro # G3952781
Mfr # 114-350
product price:  $892.99
/ea
Watts Backflow Preventer, Size 1", 400 psi 1 912HP
Watts

Backflow Preventer, Size 1", 400 psi

Zoro # G205303644
Mfr # 1 912HP
product price:  $1,435.99
/ea
Apollo Valves Reduced Pressure Zone Backflow Preventer 4A203A2F
Apollo Valves

Reduced Pressure Zone Backflow Preventer

Zoro # G009944180
Mfr # 4A203A2F
product price:  $272.99
/ea
Watts Backflow Preventer, Size 1", 175 psi 1X3/4 LF7R10-U3
Watts

Backflow Preventer, Size 1", 175 psi

Zoro # G505303641
Mfr # 1X3/4 LF7R10-U3
product price:  $153.99
/ea
Watts Backflow Preventer, Size 1 1/2", 125 psi 1 1/2 LF288AM2
Watts

Backflow Preventer, Size 1 1/2", 125 psi

Zoro # G705303748
Mfr # 1 1/2 LF288AM2
product price:  $904.99
/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 Backflow Preventer, Size 3/4", 150 psi 3/4 LF800M4-FR
Watts

Backflow Preventer, Size 3/4", 150 psi

Zoro # G105303713
Mfr # 3/4 LF800M4-FR
product price:  $656.99
/ea
Spears Backwater Valve, 6 In., PVC, 120 Deg F S675P-AK
Spears

Backwater Valve, 6 In., PVC, 120 Deg F

Zoro # G5065645
Mfr # S675P-AK
product price:  $930.99
/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 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
Watts Check Valve, 2.5 in Overall L LF6 3/4
Watts

Check Valve, 2.5 in Overall L

Zoro # G405303765
Mfr # LF6 3/4
product price:  $199.99
/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 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 1/2 LF007-QT-S-FZ
Watts

Double check backflow preventer

Zoro # G311854252
Mfr # 1/2 LF007-QT-S-FZ
product price:  $676.99
/ea
No Product Image Available
Apollo Valves

Reduced Pressure Zone Backflow Preventer

Zoro # G909534603
Mfr # 4A206A2F
product price:  $565.99
/ea
Wilkins 3in 375A RP W/Wireless Monitor DI Body NRS Gates FLG X FLG 3-375AW1
Wilkins

3in 375A RP W/Wireless Monitor DI Body NRS Gates FLG X FLG

Zoro # G315797166
Mfr # 3-375AW1
product price:  $6,844.99
/ea
Wilkins 1 In Reduced Pressure Principle Assembly, Fnpt X Fnpt 1-975XLSE
Wilkins

1 In Reduced Pressure Principle Assembly, Fnpt X Fnpt

Zoro # G712414826
Mfr # 1-975XLSE
product price:  $2,033.99
/ea
Wilkins 6in 450 DC SS Body N Pattern NRS Gates Flng X Flng 6-450ST
Wilkins

6in 450 DC SS Body N Pattern NRS Gates Flng X Flng

Zoro # G015797176
Mfr # 6-450ST
product price:  $14,843.99
/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:  $27,917.99
/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:  $10,363.99
/ea
Wilkins Backflow Preventer, 1 1/2 in, FNPT 112-975XL2SAG
Wilkins

Backflow Preventer, 1 1/2 in, FNPT

Zoro # G108230085
Mfr # 112-975XL2SAG
product price:  $2,463.99
/ea
Watts Double Check Valve Assembly, Watts 007 007MIQTS-S
Watts

Double Check Valve Assembly, Watts 007

Zoro # G2222997
Mfr # 007MIQTS-S
product price:  $971.99
/ea
Wilkins Backflow Preventer, 2 in, FNPT 2-975XL2TCUSAG
Wilkins

Backflow Preventer, 2 in, FNPT

Zoro # G008230079
Mfr # 2-975XL2TCUSAG
product price:  $2,909.99
/ea
Wilkins Backflow Preventer, 2 in, FNPT 2-975XL2SAG
Wilkins

Backflow Preventer, 2 in, FNPT

Zoro # G408230082
Mfr # 2-975XL2SAG
product price:  $2,804.99
/ea
Watts Backflow Preventer, Size 2", 125 psi 2 LF288AM2
Watts

Backflow Preventer, Size 2", 125 psi

Zoro # G805303723
Mfr # 2 LF288AM2
product price:  $1,327.99
/ea
Backflow Preventers (622 items) - Page 17
  • First
  • Previous
  • 17
    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 ValvesPressure Reducing ValvesBackflow Preventer Repair KitsPVC Pipe Fittings
Camlock FittingsPress-Fit Tube FittingsCopper FittingsPipe & Tube ClampsBlack Pipe Fittings
hose connection vacuum breaker1-1/2 in backflow preventer175 psi pressure switchbackflow preventersize6" threaded pipe cap
4 in no hubbackflow check preventer4 in backflow preventer1 inch backflowwatts series 009 3/4

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