Backflow Preventers
backflow preventers — pre-owned
Browse 180 backflow preventers — pre-owned on eBay — listings updated every few minutes. All items are pre-owned and sold by eBay sellers directly.
Used Wilkins 975XL Zurn Reduced Pressure Backflow Preventer
We look forward to serving you.
Conbraco Backflow Test Gauge Mid-West Instruments 141AC-02-00 Used Untested
Last calibration by mid west instrument was 2/5/2003 Model 141AC-02-00 max WP 3000 Max temp 200° F Body Alum Seals Bunan Internals 316ss This is as found. I personally don't know much about it, but feel free to message me questions.
You save $53.55
Watts TK-99E Backflow preventer test Kit
The Watts TK-99E Backflow Preventer Test Kit is designed for testing water-based backflow preventers. This manual valve operation kit is suitable for reduced pressure zone (RPZ) backflow preventers, ensuring proper functionality and maintenance for industrial and commercial plumbing systems. The Watts brand is known for its quality and reliability in the field of hydraulics, pneumatics, pumps, and plumbing, making this test kit a valuable tool for professionals in the industry.Comes exactly as pictured
WATTS 3/4 LF009M3-QT-RP Reduced Injection Check/Back Pressure, Valve Assembly
This is for a WATTS 3/4 LF009M3-QT Reduced Injection Check/Back Pressure, Valve Assembly. This looks like it's been used but very clean, It's missing both handle's (see Pictures).
You save $24.00
Mid-West Instrument USA Model 890 Double Check Test Valve Kit-Unknown Condition
The Mid-West Instrument USA Model 890 Double Check Test Valve Kit is a high-quality backflow preventer solution designed and manufactured in the United States by Mid-West Instrument. This kit includes a double check valve and a test valve, providing reliable protection against backflow in hydraulic systems. Made in the USA, this product ensures top-notch quality and performance for industrial and commercial applications, making it a trusted choice for businesses in need of efficient and durable valves and manifolds.
Conbraco 40107T2 40-107-T2 Backflow Preventer 1-1/2" with Ball Valves **Used**
Watts LF009M3QT 3/4” RPZ Backflow Preventer Valve Assembly w/ Shutoffs
Model: LF009M3QT. Includes: Integrated shutoff valves and test ports.
Watts LF009M2-QT 2" Female RPZ Backflow Valve MPN 0391007
Watts LF009M2-QT 2" Female RPZ Backflow Valve 0391007
Watts LF009M2-QT 2" Female RPZ Backflow Valve 0391007
Watts LF009M2-QT 2" Female RPZ Backflow Valve 0391007
Watts LF009M2-QT 2" Female RPZ Backflow Valve 0391007
Watts LF009M2-QT 2" Female RPZ Backflow Valve 0391007
Watts 009M2-QT 1" Backflow Preventer RP Reduced Pressure - Used - Untested
Quarter‑turn shutoff valves -able to turn-stiff. 009M2‑QT series.
Midwest Back flow test kit. Model 835
Midwest Back flow test kit. What you see is what you get.
Watts TK-9A Backflow Test Kit
Watts TK-9A Test Kit,Compatible with Midwest Instruments, Gauge not resting at Zero , certification expired,will need repairs/recalibration, sold untested,not working,for parts,no refunds or returns.This is in as found condition.Shipped USPS Ground Advantage.
Arbiter Universal Missing Ball Valve Handle Stem Wrench SKU: WV105 Used
The Arbiter Universal Missing Ball Valve Handle Stem Wrench is a versatile tool used for troubleshooting and maintenance in various industrial and plumbing systems. This wrench, with the SKU WV105, is designed specifically for Arbiter brand ball valves, providing a convenient solution for those who need to navigate missing valve handle stems. Its sturdy construction and universal compatibility make it a valuable tool for professionals in the hydraulics, pneumatics, pumps, and plumbing sectors, ensuring efficient and reliable service.
WATTS 3/4 LF009M3-QT-RP Reduced Injection Check/Back Pressure, Valve Assembly
This is for a WATTS 3/4 LF009M3-QT Reduced Injection Check/Back Pressure, Valve Assembly. This looks like it's been used but very clean, (see Pictures).
You save $24.00
Zurn Wilkins 34-975XL 3/4" Reduced Pressure Backflow Preventer FOR PARTS ONLY
Arrowhead PK1390 3/4 Brass Replacement Self Draining Vacuum Breaker
Crafted from high-quality brass with a nickel finish, this vacuum breaker prevents backflow and protects plumbing systems from contamination. Installation is simple and hassle-free, fitting Arrowhead brass faucets and other outdoor plumbing fixtures without the need for specialized tools.
Watts LF009M2-QT 2" Female RPZ Backflow Valve 0391007
Watts LF009M2-QT 2" Female RPZ Backflow Valve 0391007
Zurn Wilkins 975XL Brass Backflow Preventer
Sold as is. Untested, as pictured. Has been sitting in storage for a few years since pulled from operation.
Watts Regulator 775 QT 1 inch Check Valve Backflow Preventer ( FREE SHIPPING)
The valve seems old but unused, still has assemble tag attached. I have the item described and priced as a used unit. The Watts 775 QT 1 inch Check Valve Backflow Preventer is a high-quality double check assembly designed to prevent backflow in plumbing systems. With a pipe size of 1 inch, this product is suitable for various industrial and commercial applications. The Watts brand is known for its reliability and durability, making this backflow preventer a trusted choice for ensuring clean and reliable water flow. Plus, with free shipping included, it's a convenient and cost-effective option for those in need of this essential valve.
Mid-West Model 830 Backflow Test Kit Manual Valve Water RPZ
Mid-West Model 830 Backflow Test Kit Manual Valve Water RPZ
WATTS 2" Pressure Vacuum Breaker 800M4-QT - 150PSI
Actual color of item may vary slightly from what you see in the photos. Well, nothing is forever. lost my job of 29 years on Apr 30 2025. With your help I can get there, your patronage is appreciated!
You save $104.49
Mid-West instrument Test Kit Model 830 Reduced Pressure Pr Assembly Lot 2 -PARTS
For Parts only. Certain parts are dusty, dirty, and rusty. What you see if what you will get. Needs cleaning. Ok if you are salvaging parts out of it.
Zurn Wilkins 950XL 3/4” Double Check Valve Backflow Preventer RPZ Brass
• Model 950XL (compact, high-demand model). • Durable brass body. • All test cocks appear present. • Multiple test ports for inspection and maintenance. • Blue thread sealant residue visible on one end (see photos).
Watts LF009M2-QT 2" Female RPZ Backflow Valve 0391007
Watts LF009M2-QT 2" Female RPZ Backflow Valve 0391007
Watts bronze 3/4-inch pressure reducing backflow preventer. Model 009-M2 QT
This is used I’m selling it as is
Watts 1/2" 9D M3 Dual Check Backflow Preventer w/ Atmospheric Vent 175PSI 235D
Location: 235D. This item was removed from a local factory parts room. It is like new; the box is in rough condition from storage. It includes a manual. Model#: 1/2" 9D M3. Manufacturer: Watts. The sale of this item may be subject to regulation by the Food and Drug Administration and state and local regulatory agencies.
Zurn Wilkins Backflow Preventer Manifold Model 375 RP
WATTS REGULATOR 9D-M2-3/4 Backflow Preventer
WATTS Backflow Preventer: 009, Std Configuration, used, 1/2 in Pipe Size, FNPT
(B14) LOCATION.
Wilkins 720A Pressure Vacuum Breaker Backflow Preventer Manual Valve 1 in
The Wilkins 720A Pressure Vacuum Breaker Backflow Preventer is a manual valve designed for use with water. With a pipe size of 1 inch, this backflow preventer type effectively stops backflow by utilizing pressure vacuum breaker technology. The manual valve operation ensures reliability and easy maintenance, making it an essential component for industrial and commercial plumbing systems. I listed used not sure if it was open box Sold as is Message for any questions
Watts LF009M2-QT 2" Backflow Preventer Assembly w/ 2" Union Ball Valves FEBCO
The shutoff/union section is marked 2” and NPT (2x NPT visible). Valve body markings include 600 WOG / SWP (see photos). Exact assembly shown in photos (backflow body, shutoff/union valves, and threaded tailpieces/adapters).
Zurn 3/4 375 375XL Wilkins 3/4 inch Reduced Pressure Backflow Preventer Brackets
MPN : 375XL. Model : 375XL. THIS IS FOR THE BRACKETS ONLY. 1 Pair (2 brackets). If you would like to use another carrier, or would like to get the item quicker we do have other services that you are able to choose from during checkout.
You save $29.99
WATTS REGULATOR 9D-M2- Backflow Preventer
Zurn Wilkins 1-350 1" 350 Double Check Backflow Preventer
The Zurn Wilkins 1-350 1" 350 Double Check Backflow Preventer is a plumbing device designed to prevent the backflow of water in a 1-inch pipe. It features a double check valve design to ensure reliability and is built to meet the requirements of various industrial and commercial applications. This backflow preventer is a crucial component for maintaining the safety and functionality of plumbing systems in businesses and institutions.
Watts 1/2" 9D-M3 Backflow Preventer W Pressure Reducer B1166F
Can't say open box. Can't say new. Amazingly good valve.
FEBCO Brass Bell 765 PVB 150 MWWP Fresno California School 4” Diameter 1” Tall
FEBCO Brass Bell 765 PVB 150 MWWP Fresno California School 4” Diameter 1” Tall.
You save $22.50
Watts series 900 Backflow preventer PARTS ONLY
As shown. Believe it to be complete, just not 100% sure.
MID-WEST Model 830 RP Valve Test Kit Backflow Prevention Tester Gauge Set
For sale is a MID-WEST Model 830 RP Valve Test Kit, used for testing Reduced Pressure (RP) backflow prevention devices. This is a professional backflow testing kit commonly used by plumbers, irrigation technicians, and water system inspectors. The kit includes the gauge assembly, valves, hoses, and original schematic diagram inside the case. Features: • MID-WEST Model 830 Test Kit • 0–15 PSID gauge • High (red), Low (green), and Vent (black) test valves • Bleed high / bleed low controls • Designed for RP backflow prevention device testing • Durable carry case with schematic diagram inside lid Included: • Test gauge assembly • Hoses (red, green, black) • Carry case • Everything shown in the photos
Watts LF009M2-QT 2" Female RPZ Backflow Valve 0391007
• Part Number: 0391007. • Application: Potable water backflow protection. • Connection: Female threaded. Key Features.