We carry rebuild kits for the backflow preventers we see most and order anything else. Whether it's an RP dumping water, a double check that won't hold or a PVB leaking from the bonnet, we fix it, retest it and file the passing report.
- PriceFree quote
- Time1–2 hours
- RetestIncluded
- ApprovalPrice first
Ready to book? Same-week appointments.
Common fixes
- RP relief valve discharging water
- Broken springs
- PVB bonnet or air inlet leaks
- Check valves that won't hold
- Worn rubber kits
Repairing RP assemblies
When an RP starts leaking from the relief port, people often assume the relief valve is bad. Usually it's the first check. Grit or a hardened disc lets pressure build between the checks, and the relief valve opens to protect the supply.
The repair typically means cleaning the first check seat and installing new rubber parts. If the relief valve diaphragm has a tear or its seat is damaged, that gets rebuilt too.
We retest the whole assembly afterward and file the passing report. If water keeps discharging even after a rebuild, it can point to pressure swings in the supply, and we'll tell you what we think is going on.
Fixing a double check that won't hold
When a double check fails, it's nearly always a check valve that isn't sealing. The cause is usually debris or old rubber.
We shut the water off, open the check covers, pull each check out, and either clean it or rebuild it with a fresh kit. Weak springs get replaced. New o-rings go in before everything's reassembled.
On fire sprinkler services, taking a double check offline affects the fire system, so we plan the timing with you and keep it brief. After the repair, we test it again and send the passing report to your district.
Fixing vacuum breakers on sprinklers
PVBs and SVBs live outdoors in the sun and weather, so their rubber parts break down faster. The usual symptoms are water spitting from the top, a check that leaks and an air inlet that sticks open or closed.
A rebuild kit with a new disc, poppet and o-rings fixes most of these. A cracked bonnet gets swapped for a new one.
Repairs are typically fast, and we retest right away. For very old devices where parts are scarce, a new device can cost close to what a rebuild would, so we'll give you both prices.
Parts and brands
Backflow preventers in Redlands come from a handful of major manufacturers, and each make and model takes its own repair parts. We carry kits for the devices we see most often and order the rest from suppliers.
Using the manufacturer's parts matters. Mixing parts from different devices can lead to a device that passes once and fails again soon after. Before we order anything, we confirm the make, model, size and serial number.
If parts aren't on the truck, we'll tell you how long they'll take to arrive and schedule a return visit. Most come in within a few days. Every repair is followed by a full retest so the district gets a passing report.
Warning signs between tests
Some problems show up before the yearly test. Watch for an RP relief port that drips or sprays, a PVB that spits from the top, leaks at fittings or a sudden loss of pressure past the device.
Calling early usually means an easier, less expensive repair than letting it fail completely.
Fire sprinkler preventer repairs
Repairing a fire line device takes a bit more coordination. Shutting it down affects the sprinkler system, so the alarm company or building staff may need a heads-up.
We plan the work with you and keep the downtime short. These devices are often 4 inches or larger, and you'll get a quote before any work begins.
Repair visits and scheduling
Many repairs happen on the same visit as the test, right after the failed reading. If you'd rather think it over or need approval from an owner or board, we'll leave the quote and schedule a return visit.
If another company tested and failed your device, send us the report. The readings tell us which parts to bring, so the repair usually takes just one trip.
Repair or replace
Most can. If not, we'll explain why and quote a replacement.
Questions
How long do repairs last?
A good rebuild often lasts years. Debris in the water is the main thing that shortens it.
Do you use original parts?
Yes. We use the manufacturer's repair kits for your make and model.
Why does my preventer keep failing?
Debris in the line and age are the usual reasons. We'll tell you if replacing it makes more sense.
Which brands do you repair?
The common ones: Watts, Febco, Wilkins and Ames, plus most others we can get parts for.
Is the relief valve always the problem when an RP leaks?
Usually not. Most of the time the first check is fouled or worn, and the relief valve is doing its job.
Do I need a new test after a repair?
Yes, and it's included. The district only accepts a passing test after the repair.
What to expect when you book backflow preventer repair
Booking takes a couple of minutes by phone or online. We confirm the address, the device and how to reach it, and we'll give you a time window that works for you. For most homes, you don't need to be there.
On the visit, a certified tester does the work with a calibrated gauge and explains anything that comes up in plain terms. If a repair is needed, you'll get the price before anything happens. When the device passes, we send the report to your water district and email you a copy. Our office is open seven days a week, 6am to 12pm, and emergency calls are answered around the clock.
Backflow Preventer Repair near Redlands
We offer backflow Preventer Repair throughout Redlands and nearby cities, including Loma Linda, Mentone, Calimesa, Highland and Yucaipa. Most appointments are available within the week, and you can call or book online.