Annual Backflow / Preventer Testing Made Easy
Pipe Doctor Home Services, Inc. — Serving Nassau County & All of Long Island, NY
At Pipe Doctor Home Services, Inc., we don’t just fix problems — we help you prevent them. One of the most important proactive services we provide for both residential and commercial customers in Nassau County on Long Island is annual backflow / preventer testing. In this video, Mikey Pipes walks through the proper procedure for performing the Watts DCV annual test with the TK9A Preventer Test Kit — a critical maintenance step that protects your water supply and keeps your system compliant with local and state codes.
If you haven’t watched it yet, click here: https://youtu.be/XnO-a3ai6V4
What Is a DCV and Why Does It Matter?
A DCV (Double Check Valve preventer) is a backflow prevention device installed on potable water systems to prevent contaminated water from flowing backward into the clean water supply. Whether it’s irrigation systems, boilers, hydronic systems, or industrial equipment, a DCV is often required by code in Nassau County — and it must be tested annually to ensure it’s functioning properly.
Why? Because backsiphonage and backpressure events can introduce contaminants into your household or municipal water system. A functioning DCV protects your family, your business, and your neighbors.
What You’ll See in the Video
In the video, Mikey demonstrates:
- How to set up the Watts TK9A Preventer Test Kit
- How to properly isolate the preventer assembly
- How to measure and verify internal shutoff and check valve pressure differentials
- Why annual testing is required and how it’s documented
This isn’t a “quick eyeball” — it’s a proper professional test that meets code and ensures long-term performance.
Tools of the Trade: Watts TK9A Test Kit
The Watts TK9A Preventer Test Kit is a professional-grade tool designed for water professionals to test double check valve assemblies (DCV). The kit allows technicians to:
- Hook up test hoses to each test port on the preventer
- Record accurate delta-P (pressure differentials)
- Validate both check valves and shutoff valves
- Capture test results for compliance records
Whether you’re a facility manager, homeowner association (HOA), landscaper, or property owner — annual DCV testing protects your liability and your water supply.
Why Annual Testing Matters
Annual testing of backflow preventers is not just good practice — in most jurisdictions (including right here on Long Island), it’s required by code. Local water authorities mandate yearly inspections and documented test results to:
- Ensure potable water safety
- Maintain compliance with health department regulations
- Detect worn internal components before failure
- Protect public and private water systems
A failed backflow preventer can lead to:
- Contaminated potable water
- Plumbing system damage
- Health code violations
- Increased liability for property owners
Our mission? Prevent the preventable.
What You’ll Learn in the Test
During an annual Watts DCV test, a professional tech will:
- Isolate the device using the built-in shutoff valves
- Connect the TK9A test kit hoses to the three test ports
- Measure pressure readings across internal check valves
- Evaluate whether both check valves are within acceptable ranges
- Document test results for municipality or water utility compliance
- Flag and repair any deviations before a failure occurs
This process protects your system before something goes wrong — just like preventive maintenance on your heating, plumbing, or HVAC equipment.
Who Should Get This Service?
You should schedule an annual DCV test if you have:
- Irrigation systems
- Fire suppression systems
- Hydronic heating systems
- Boilers with recirculation pumps
- Commercial buildings with chemical injectors
- Any water system with a double check or preventer assembly
Even if you think your system is fine, annual testing catches small issues before they become big problems.
Why Nassau County Trusts Pipe Doctor
At Pipe Doctor Home Services, Inc., our certified technicians:
- Are trained on the latest testing procedures
- Use professional test kits (like the Watts TK9A)
- Provide detailed compliance paperwork
- Answer your questions in plain English
- Serve both residential and commercial customers
We’re not just fixing problems — we’re helping you build a safer system.
Need Backflow / Preventer Testing?
Don’t wait until a preventable failure becomes an emergency.
📍 Pipe Doctor Home Services, Inc.
📞 516-348-6300
📧 service@pipedoc.net
🌐 https://www.pipedoc.net
Watch the full how-to here: https://youtu.be/XnO-a3ai6V4
Final Takeaway
Annual DCV/backflow preventer testing is a small investment that protects your water, your equipment, and your compliance record. With the right tools — and the right technician — you can rest easy knowing your system is performing safely and reliably.
Prevention is always cheaper than repair.
