Customer Type: Residential – Multi-Unit Condominium Complex
Manufacturer: Honeywell

Model: 4-3000 RPZ

South Jersey Backflow logo backflow testing and repair

Today, South Jersey Backflow was in Hoboken, NJ, servicing the backflow preventer at a multi-unit condominium complex located along the waterfront. This property includes a mix of high-rise buildings, amenities, and common areas that all share a central water system. The backflow preventer we tested is designed to protect the building’s potable water supply from contamination due to any potential backflow from the communal irrigation system or shared plumbing.

The backflow preventer installed was a Honeywell 4-3000 Reduced Pressure Zone Assembly (RPZ), which serves as the primary defense against cross-contamination in the building’s water system.

Initial Inspection and Testing

The Honeywell 4-3000 RPZ was housed in an underground utility vault beneath the parking garage, with easy access for maintenance. Our visual inspection showed:

  • No signs of damage to the valve body or components.
  • Minimal debris around the relief valve discharge area, typical of underground installations.
  • Shutoff valves in good condition, though slightly difficult to operate due to infrequent use.

We proceeded with the full backflow preventer test:

  1. Check Valve #1 – Passed, holding at 3.5 PSI.
  2. Check Valve #2 – Passed, maintaining 3.1 PSI.
  3. Relief Valve – Passed, opening at 2.3 PSI.

Preventive Maintenance

To ensure continued optimal performance, we completed the following routine maintenance:

  • Flushed the relief valve to remove any accumulated debris.
  • Cleaned and inspected the check valve seats for proper sealing.
  • Lubricated the shutoff valves to ensure smooth operation in the future.

Final Steps and Certification

After confirming the system’s operation, we:

  • Filed the compliance report with the Hoboken Water Utility.
  • Provided the inspection results to the condominium’s property management team.
  • Scheduled the next annual inspection to ensure continued compliance and performance.

Final Recommendations

Before leaving, we advised the property management team to:

  1. Inspect the vault every few months to prevent debris buildup that could obstruct valve operation.
  2. Ensure the vault is properly ventilated to avoid moisture buildup, which can lead to corrosion.
  3. Monitor the system during winter months, especially since the underground vault could be susceptible to temperature fluctuations.

Another successful service by South Jersey Backflow, helping Hoboken’s multi-unit condos stay compliant and ensuring their water system remains safe for all residents!