Customer Type: Residential – Single-Family Home with Irrigation and Hot Tub

Manufacturer: Conbraco

Model: 4A-101 Reduced Pressure Zone (RPZ)

South Jersey Backflow logo backflow testing and repair

Today, South Jersey Backflow was in Newton, NJ, performing an inspection and maintenance on a backflow preventer at a residential home with an irrigation system and a hot tub. The homeowner relies on the irrigation system for landscaping and the hot tub for recreational use, which means both systems must be safeguarded to ensure no contaminants enter the potable water supply. The backflow preventer installed is the Conbraco 4A-101 RPZ, a reliable choice for residential properties requiring robust protection against backflow contamination.

Initial Inspection and Testing

The Conbraco 4A-101 RPZ was installed in the home’s utility room, easily accessible for routine maintenance. Our visual inspection revealed:

  • No visible leaks or cracks in the backflow preventer assembly.
  • Slight mineral buildup around the relief valve, which is common in areas with hard water.
  • Shutoff valves working correctly, but there was some minor corrosion around the valve stems.

We proceeded with the full backflow preventer test:

  1. Check Valve #1 – Passed, holding at 3.4 PSI.
  2. Check Valve #2 – Passed, maintaining 3.1 PSI.
  3. Relief Valve – Passed, opening at 2.2 PSI.

Preventive Maintenance

As the system passed all tests, we performed the following routine maintenance:

  • Flushed the relief valve to remove any mineral buildup and ensure it opens freely when necessary.
  • Cleaned the check valve seats to keep them free of debris and ensure a proper seal.
  • Lubricated the shutoff valve stems to maintain smooth operation and prevent stiffness.

Final Steps and Certification

After completing the inspection and maintenance, we:

  • Filed the compliance report with the Newton Water Department.
  • Provided the homeowner with the completed test results and a summary of services performed.
  • Scheduled the next annual inspection to ensure continued compliance and optimal system function.

Final Recommendations

Before leaving, we advised the homeowner to:

  1. Inspect the backflow preventer at least once a quarter to clear any debris or mineral buildup, particularly after using the irrigation system or hot tub.
  2. Monitor the hot tub plumbing for any signs of leaks or issues that could affect the backflow preventer’s operation.
  3. Ensure that the irrigation system’s pipes remain free of contaminants to maintain safe and clean water throughout the home.

Another successful service by South Jersey Backflow, ensuring Newton’s residential home remains protected from backflow contamination!