Caleffi 553549A Filling ValveThe Filling Valve from the Caleffi 553549A line provides automatic, pre adjustable filling for boiler and hydronic systems. The Caleffi 553549A Filling Valve combines a brass body with a durable PA 66 GF 30 cover for long lasting performance. Designed for a 1 2 inch nominal size installation, this valve uses soldered union x female threaded union end connections and measures 4 3 4 inches from end to end. It is rated for temperatures up to 150F and

This actuator-only unit is ideal for projects that require reliable zone control without replacing entire valve bodies

Compatible with a range of Carlin burners

Ideal for hydronic systems

and 305/430 stainless steel components for durability and chemical resistance

Durable construction built for long-lasting performance and reliable service

loading air gap 1/8 to 3/16 inch

Featuring an MX140 208V/60Hz AC coil and 1/2" NPT ports

ensuring compatibility with common specification requirements in commercial settings

Benefits: Durable construction

Integrated temperature gauge provides at-a-glance monitoring of outlet temperature for quick adjustments

Size (W x H): 2

With a 50 VA rating