Caleffi 573002A Combination Fill Valve and Backflow PreventerThe Caleffi 573002A Combination Fill Valve and Backflow Preventer delivers reliable protection for residential water supplies. This 1 2 inch dual check backflow preventer helps prevent contamination and complies with CSA (Canada and US) and ASSE 1012 standards. Built with a brass body and EPDM seals, it stands up to operation in potable water lines. It features a female threaded union x female threaded connection, a compact 9 1 8 inch end to end

with thermal protection included for added safety

This maintenance tool helps reduce downtime and extend equipment life

and peace of mind in gas-fired equipment

Hysteresis Synchronous Motor for long life and reliable actuation

Temperature Rating: 366°F

it supports natural gas

and supports fuel flow of 6–12 GPH

Durable steel construction for long-lasting use

Precise temperature sensing for reliable furnace protection

it provides accurate feedback and venting where space is tight

Its engineering supports consistent performance across challenging environments

Ambient temperature up to 169 Deg F and humidity from 5% to 95% Non-Condensing ensure reliable operation in typical mechanical rooms