Caleffi 573006A Combo Autofill ValveCaleffi 573006A is a reliable Combo Autofill with 1 2" press connections on both ends. This ASSE 1012 certified unit combines automatic fill and shut off capabilities for efficient hydronic system management. Designed for easy installation in tight spaces, this pre assembled autofill valve delivers consistent pressure to protect boilers and radiant heating loops in residential or light commercial setups. This combination valve is ideal for boiler feed

Armstrong 93W72 is a dependable Switch Limit Control designed for precise stopping actions in HVAC and industrial systems

the Armstrong 85K35 integrates seamlessly with standard gas lines and 24V control circuits

Compatible with standard natural gas piping and regulators

Nominal size: 3/8 in x 11/32 in

and renewed climate control

proportional output ideal for precise valve positioning and flow control

The expandable design lets you start with multiple zones and grow as needed

Mounting & standards Vertical/Upright mounting

AO Smith 100110710 is a dependable replacement burner kit designed for lasting performance

This valve is a direct replacement part designed for natural gas operation on Bradford White water heaters

Caleffi 253044 is a safety relief valve designed to protect systems from overpressure

tool-friendly replacement for professional service