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The WATTS 235069 is a complete boiler trim-out package designed for closed-loop hydronic heating systems in both residential and commercial applications. The package consolidates the core components needed to properly commission and protect a hydronic boiler loop, including an air separator, expansion tank, fill valve with backflow preventer, float vent, and service check valves. Sized for 1-1/4 inch IPS connections, this package reduces sourcing time and ensures component compatibility across the assembly. It is typically installed by licensed plumbers or hydronic heating technicians during new boiler installations or full system retrofits.
This trim package is suited for closed-loop hydronic and steam heating systems in residential and light commercial settings. The included ETX series expansion tank handles system pressure fluctuations, while the bronze combination fill valve and backflow preventer maintain proper system pressure and prevent contamination of the potable water supply. The air separator removes entrained air from the loop, protecting pumps and improving heat transfer efficiency. The float vent and service check valves round out the assembly for a code-ready installation.
Designed for use on commercial and residential closed-loop hydronic and steam heating systems with 1-1/4 inch IPS connections.
Installation should be performed by a licensed plumber or qualified hydronic heating technician in accordance with local mechanical codes and IFGC requirements. Shut down the boiler and relieve system pressure before connecting or disconnecting any components. Verify that the expansion tank pre-charge pressure matches the static fill pressure of the system before commissioning. Inspect all threaded connections for proper sealing after startup.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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