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
Need it done soon? Most tests are scheduled within a few days.
Common fixes
- Worn rubber kits
- Broken springs
- PVB bonnet or air inlet leaks
- Check valves that won't hold
- RP relief valve discharging water
Fixing a reduced pressure assembly
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
A double check that fails its test almost always has one check valve that won't close tight. Debris and worn rubber are the usual suspects, the same as with an RP.
The repair involves shutting off the water, removing the check valve covers, pulling out each check module and cleaning or rebuilding it. Springs are replaced if they've lost tension. Then everything goes back together with new o-rings.
Double checks on fire lines need extra care. Shutting one down affects the sprinkler system, so we coordinate with you before starting and keep the downtime short. Once repaired, the device is retested and the report is filed.
Fixing vacuum breakers on sprinklers
Vacuum breakers on irrigation lines see a lot of sun and weather, so their rubber parts wear faster than devices tucked inside a building. Common problems include water spraying from the bonnet, a check valve that won't seal and an air inlet that sticks.
Most PVB and SVB repairs use a rebuild kit with a new check disc, air inlet poppet and o-rings. If the bonnet is cracked from freezing or sun damage, we replace it.
These repairs are usually quick, and the device is retested right after. If the device is old and parts are hard to find, replacing it can sometimes cost about the same as rebuilding it, and we'll lay out both options.
Parts and brands
Backflow preventers in Riverside 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.
Repairs on fire line devices
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
Repairs often happen right after a failed test, on the same visit. If you need time to decide or get approval, we'll leave the quote with you and come back when you're ready.
Did someone else fail your device? Forward their report. The readings show us which parts to bring, which usually means a single visit.
Repair or replace
Usually yes. If the body is cracked or parts are gone, we'll go over replacement.
Questions
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.
Do I need a new test after a repair?
Yes, and it's included. The district only accepts a passing test after the repair.
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.
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 Riverside customers call us for backflow preventer repair
We're a local company that focuses on backflow prevention. Every test is run by a certified tester with a calibrated gauge, and every report is filed with your water district as part of the job, not as an add-on.
You'll know the price before any work starts. Testing is a flat $105 per device under 4 inches and $175 for 4 inches and up, and repairs, replacements and installs are quoted first. We answer the phone seven days a week from 6am to 12pm, same-week appointments are normal, and emergency calls are taken 24/7. When the job's done, you get a copy of the report by email so you always have proof on hand.
Where we offer Backflow Preventer Repair
Our testers handle backflow Preventer Repair across Riverside and the surrounding area, from Jurupa Valley, Grand Terrace, Colton, Loma Linda and Moreno Valley. Call for the next opening or schedule online.