Inspection & Testing · Installation · Maintenance
Fire Line Backflow Testing & Certification
Annual certification by a certified tester — filed with your purveyor where they require it, and in your hands either way.
Every fire line that touches potable water carries a backflow preventer, and every water purveyor wants an annual test with their form, their deadline and a certified tester's number on it. We test and certify, file with the purveyor where they require it, and get the report to you either way — and the forward-flow test doubles as proof your fire line still delivers.

- Standard
- NFPA 25 §13.5 + purveyor requirements
- Assemblies
- DCVA, RPZ, DCDA on fire lines
- Testers
- NJ Certified Backflow Prevention Testers
- Filing
- Submitted where the purveyor requires it
- Interval
- Annual test, five-year internal
- Coverage
- NJ · PA · DE — statewide
Core services
Inspection and testing, installation, maintenance.
We provide pricing and timing before any work begins, so you can plan around it.
Annual Certification
The test, the tag and the paperwork — handled end to end.
- Forward-flow and differential pressure testing
- Check and relief valve operation verified
- Certification filed with the purveyor where they require it
- Deadline tracking so every notice is answered on time
- Combined with sprinkler ITM visits to save a trip charge
Repair & Rebuild
Failed assemblies rebuilt with manufacturer kits, retested same visit.
- Check and relief valve rebuilds
- Seat and spring replacement
- Freeze damage repair
- Retest and refile immediately after repair
Replacement
When a rebuild stops making sense, a straight answer and a clean install.
- Like-for-like and code-driven upgrades
- Purveyor coordination on shutdowns
- Five-year internal inspections
- Documentation issued to you, and to the purveyor where required
Common Questions
Backflow Preventers — questions we get asked.
How often does a backflow preventer need to be tested?
Annually, by a certified tester. Where the purveyor requires the results, we file them; otherwise the report comes to you. Some purveyors and municipalities require more frequent testing.
Who is allowed to test a backflow preventer?
Only a tester holding current certification in that state — New Jersey requires its own certification. We hold NJ backflow certification and file the results with the purveyor.
What happens if the test is late?
The purveyor can issue a violation and, in some jurisdictions, shut off water service. It is a small annual test with an outsized consequence for missing it.
Is the fire line backflow the same as the domestic one?
No — they are separate assemblies with separate certifications, and a building commonly has both. Testing one does not cover the other, which is a frequent source of surprise violations.
We work on what's already in your riser room
No rip-and-replace pitch on the first visit. We hold current manuals and parts references for every line above — when a system genuinely can't be maintained any longer, we'll show you why before we quote a replacement.
Fire Line Backflow Testing & Certification in trouble right now?
Call 1-888-306-8430 — the line is answered around the clock by a technician who can access your system information and start guidance on the phone.
