usvehj 0887718 Retro Repair Kit — Freeze-Resistant 1-Inch Backflow Retrofit for Watts 0887718

Overview

The usvehj 0887718 Retro Repair Kit is designed to restore a leaking or malfunctioning Series 800M4 Pressure Vacuum Breaker and to upgrade it to a freeze‑resistant version. This kit provides a practical path to maintain reliable operation by converting 1-inch 800M4-QT to 800M4-FR, offering better resilience in cooler or outdoor environments without replacing the entire valve.

What makes this kit practical

Each component is chosen to fit the original assembly, enabling a straightforward upgrade or repair with standard hand tools. The FR upgrade incorporates a stem, spring, and a compact vent float design that supports controlled venting during temperature changes.

• Vent system upgrade: The FR variant uses a stem, spring, and a BB‑like ball to accommodate expansion.
• All‑in‑one content: The package includes seven pieces to support a complete retrofit.
• Simple on-site service: The kit is designed for a straightforward install flow, minimizing the need for specialized tools.

What you get

• 1 Hood
• 2 Hood screws
• 1 Bonnet
• 1 Bonnet O‑ring
• 1 Vent spring
• 1 Vent float assembly

Why upgrade to FR

The freeze‑resistant variant is designed to handle expansion during cold conditions, helping maintain proper venting and reliability in exposed installations.

Installation at a glance

Plan a quick repair session: shut off the supply pressure and drain the valve, remove the hood screws and hood, rotate to remove the bonnet, then swap in the vent and float parts before reassembling in reverse order.

Quality and support

This kit is backed by a 12‑month warranty and a 30‑day return window, reflecting confidence in the fit and materials. If the product does not meet your needs, simple returns help you move forward with your project.