Repair Is Usually the Right Choice
The good news is that most backflow preventer failures can be resolved with a straightforward repair. Backflow prevention assemblies are designed with replaceable internal components — check valve modules, rubber seats, springs, and O-rings — that can be swapped out without replacing the entire device.
A typical repair by a TCEQ licensed backflow tester involves:
- Disassembling the check valve modules
- Inspecting all internal components for wear, damage, or debris
- Replacing worn seats, springs, diaphragms, or O-rings
- Reassembling and retesting the device
- Filing the passing test report with your water utility
Repair costs are significantly lower than replacement. A standard check valve rebuild on a residential PVB or DCVA typically ranges from $75 to $200 in parts and labor, compared to $500 to $2,000 or more for a full device replacement including installation.
When Replacement Makes More Sense
While repair is the preferred option in most situations, there are circumstances where replacing the entire backflow preventer is the better long-term decision:
Age of the device — Backflow preventers have a typical service life of 15 to 25 years, depending on the manufacturer, water quality, and maintenance history. If your device is approaching or exceeding this range, replacement may be more cost-effective than continuing to repair aging components.
Repeated failures — If your device has failed its annual backflow test multiple times in recent years despite repairs, the assembly body itself may be worn beyond the point where internal component replacement can restore reliable performance.
Severe corrosion — DFW's water can be hard on metal components over time. If the device body shows significant corrosion, pitting, or mineral buildup that affects the sealing surfaces or test ports, repair parts alone will not solve the problem.
Parts availability — Some older backflow preventers have been discontinued, and replacement parts are no longer manufactured. If your device requires a component that is no longer available, replacement is the only option.
Code changes — Municipal codes and TCEQ regulations evolve over time. In some cases, the type of device originally installed may no longer meet current requirements for your property's hazard classification. A code-required upgrade means replacement regardless of the device's condition.
What Does Replacement Involve?
Replacing a backflow preventer is a two-step process:
- 1Installation — A licensed plumber removes the old device and installs the new one. This typically requires shutting off the water supply to the property for 1 to 3 hours.
- 1Initial testing — After installation, a TCEQ licensed backflow tester must test the new device before it can be placed into service. This initial test establishes the baseline for your annual testing cycle.
Atlas Backflow of Texas works with trusted licensed plumbers throughout the DFW area and can coordinate the entire replacement process — from recommending the right device for your application to performing the initial test on the new assembly.
Making the Decision
When your backflow preventer fails its annual test, Atlas Backflow of Texas will give you an honest assessment of whether repair or replacement is the better option. We do not push unnecessary replacements, and we do not perform repairs on devices that should be replaced. Our goal is to get you back in compliance as quickly and cost-effectively as possible.
Call (817) 612-6088 or email [email protected] for a professional evaluation of your backflow preventer.
