Caleffi 573002A Combination Fill Valve and Backflow Preventer

The 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 distance, and a temperature rating up to 150°F.

Designed for water service, it supports up to 175 PSI and offers an adjustable 3–60 PSI pressure range, with a factory setting of 15 PSI for easy installation. This unit combines a fill valve and backflow prevention in a single, space-saving package.

• Type: Dual Check Backflow Preventer
• Size/Connections: 1/2" female threaded union x female threaded
• Material: Brass body with EPDM seals
• Standards: CSA (Canada & US) and ASSE 1012
• Pressure: 3–60 PSI range; 175 PSI maximum
• Temperature: Up to 150°F
• End-to-end: 9-1/8" length
• Application: Water supply system