Backflow Preventer Rebuilds & Repairs Across All of New Jersey
Your backflow preventer failed a test. Or it’s leaking. Or it’s been years since anyone looked at the internal components and you’re starting to get notices from your township. Before you resign yourself to the cost and disruption of a full device replacement, know this: in the vast majority of cases, a certified backflow preventer rebuild is all you need.
South Jersey Backflow has been rebuilding backflow preventers for residential, commercial, industrial, and municipal customers across New Jersey since 2004. We carry OEM replacement parts for all major manufacturers on-site, so in most cases we can diagnose, disassemble, rebuild, reassemble, and retest your device in a single visit – at 30 to 50 percent of what a replacement would cost you.
What Is a Backflow Preventer Rebuild?
A rebuild is a complete internal restoration of your existing backflow device. Rather than replacing the entire unit, our technician disassembles the device body, removes all worn or damaged internal components, thoroughly cleans and descales the housing, installs brand-new OEM parts, reassembles the device to manufacturer specifications, and immediately performs a certified backflow test to confirm it’s functioning correctly.
The components we replace during a rebuild typically include:
- Check valve assemblies (first and second check)
- Rubber seals, O-rings, and seat discs
- Springs, poppets, and diaphragms
- Relief valve internals
- Test cock assemblies and washers
- Shut-off valve packing (when accessible)
The result is a device that performs like new – with all workmanship and parts backed by a one-year warranty – at a fraction of the cost of replacement.
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Signs Your Backflow Preventer Needs a Rebuild
Most devices show warning signs well before they fail a formal inspection. Contact us if you notice any of the following:
- Your device failed its annual certification test
- Water is dripping or discharging from the relief valve
- You see visible corrosion, mineral deposits, or rust on external components
- Shut-off valve handles are stiff, partially stuck, or won’t fully close
- You’ve received a compliance notice from your township or water provider
- Your device is more than 5 years old and has never had internal service
- You notice reduced water pressure downstream of the device
Any of these symptoms typically indicates internal wear that a rebuild can resolve. The sooner it’s addressed, the less likely you are to face a full replacement or a water shutoff.
Learn more: Types of Backflow Preventer Valves and Signs of a Needed Repair
Still unsure which option is right for your device? Read: How to Decide If You Should Repair or Replace Your Backflow Preventer
Brands and Models We Rebuild SAme Day (size depedant)
We carry OEM rebuild kits and individual replacement parts for all major backflow preventer manufacturers, including older and discontinued models that other service companies no longer support:
| Manufacturer | Common Models Serviced |
| Watts | 909, 957, LF009, LF009M2QT, 007 |
| Zurn / Wilkins | 975XL, 350XL, 950XL, 720A, 450ST |
| Febco | 765, 825Y, 850, 860 |
| Apollo / Conbraco | RP4A, DC4A, PVB4A |
| Ames | 4000SS, 3000SS, 2000SS |
| Cla-Val | RP3, RP2 |
Don’t know your model number? NO PROBLEM. Our technician will identify your device on arrival. All we need is access to the unit.
All Device Types Rebuilt
| Device Type | Typical Application |
| RPZ — Reduced Pressure Zone | Commercial water lines, boilers, fire suppression |
| DCVA — Double Check Valve Assembly | Irrigation, fire lines, lower-hazard commercial |
| PVB — Pressure Vacuum Breaker | Lawn irrigation, pool fills |
| SVB — Spill-Resistant Vacuum Breaker | Indoor commercial plumbing |
Whether your device is installed indoors, outdoors, in a vault, wall-mounted, or housed inside a protective enclosure – we have the tools and expertise to rebuild it correctly.
If your device is unprotected outdoors, consider pairing your rebuild with one of our custom backflow enclosures to prevent future freeze damage and vandalism.
What's Included in Every South Jersey Backflow Rebuild
- On-site diagnosis to confirm rebuild is the right solution
- Complete disassembly, cleaning, and descaling of device housing
- Full internal rebuild using OEM replacement parts
- Reassembly to manufacturer specifications
- Certified backflow test immediately following rebuild
- Test report completed and submitted to your local township and water authority
- PDF copy of certification sent to you by email
- One-year warranty on all workmanship and replacement parts
If our inspection reveals that the enclosure, shutoff valves, or adjacent plumbing also need attention, we’ll quote those repairs separately with full transparency – no surprise charges.
Fast Turnaround — No Waiting, No Back Orders
One of the most common complaints we hear from customers who’ve dealt with other backflow companies is the wait. Waiting for a technician to order parts. Waiting for parts to ship. Waiting to schedule a return visit. Waiting for the township to receive the paperwork.
South Jersey Backflow eliminates all of that. Our service trucks are stocked with OEM rebuild kits for every major brand and model. When we arrive, we have what we need. When we leave, your device is rebuilt, retested, and certified – and your paperwork is already submitted.
- Same-day or next-day rebuilds in most areas of New Jersey
- No waiting on special orders for common models
- Reports submitted to townships on the same day as service
- Emergency rebuild service available 24/7 for urgent compliance situations
Serving All New Jersey Property Types
Our rebuild service is available to every type of property across all 21 counties:
- Homeowners with irrigation backflows, boiler loop preventers, or pool fill devices
- Commercial properties including offices, restaurants, strip centers, warehouses, and factories
- Property management companies with multi-site rebuild needs and centralized reporting
- HOAs and apartment complexes with shared water meters and irrigation manifolds
- Schools and municipal buildings with RPZ and fire suppression systems
- General contractors and licensed plumbers seeking certified third-party rebuild services
See more customer stories: South Jersey Backflow Testimonials
Statewide Coverage - All 21 New Jersey Counties
South Jersey Backflow serves every county in New Jersey. Whether you’re a homeowner in Cape May or a commercial property manager in Bergen County, our certified technicians come to you.
South Jersey
- Atlantic County — Galloway, Atlantic City, Egg Harbor Township
- Burlington County — Mount Laurel, Moorestown, Evesham, Marlton, Medford
- Camden County — Cherry Hill, Haddonfield, Voorhees, Collingswood
- Cape May County — Cape May, Wildwood, Ocean City
- Cumberland County — Vineland, Bridgeton, Millville
- Gloucester County — Deptford, Washington Township, Woodbury
- Ocean County — Toms River, Brick, Lakewood
- Salem County — Salem, Pennsville, Carneys Point
Central Jersey
- Hunterdon County — Flemington, Clinton
- Mercer County — Trenton, Princeton, Hamilton Township
- Middlesex County — Edison, Woodbridge, New Brunswick
- Monmouth County — Freehold, Red Bank, Middletown
- Somerset County — Somerville, Bridgewater
North Jersey
- Bergen County — Paramus, Hackensack, Fort Lee
- Essex County — Newark, Montclair, Livingston
- Hudson County — Jersey City, Hoboken, Bayonne
- Morris County — Parsippany, Dover, Rockaway
- Passaic County — Clifton, Paterson, Wayne
- Sussex County — Newton, Sparta, Vernon
- Union County — Elizabeth, Westfield, Union Township
- Warren County — Phillipsburg, Hackettstown
No matter your location, we handle the scheduling, testing, reporting, and certification — from first call to final submission.
Frequently Asked Questions — Backflow Rebuilds
How long does a rebuild take? Most RPZ and DCVA rebuilds take 30–90 minutes depending on device size and access. We’ll confirm timing when we schedule.
Do I need to be present? Only if the device is located inside your property. For outdoor and exterior-mounted units, we can rebuild and test without you on-site.
Can all devices be rebuilt? Most devices can be rebuilt as long as the main body casting is structurally intact. We’ll inspect and confirm before doing any work.
Will I get paperwork for my township? Yes. We complete and submit the test report to your local authority on the same day and send a digital copy to you.
Schedule a Backflow Rebuild Today
Don’t replace it until you’ve had it rebuilt. In most cases, a South Jersey Backflow rebuild will restore your device to full working condition, keep you in compliance, and save you significant money over a full replacement.
📞 Call Now: (856) 291-6809
📧 Email: southjerseybackflow@gmail.com
🌐 Schedule Online: https://southjerseybackflow.com/contact/