Heating Caleffi Boiler Fill Valves | 1/2″ Npt Autofill Boiler Feed Valve

The Function Of The Caleffi 553542A Is To Automatically Fill And Regulate The Pressure In A Hydronic System To A Pre-Set Value. Water Flow To The System Will Automatically Stop When The Pre-Set Value Is Reached And Fill Up With More Water If Required.

Specs And Features:

• 1/2″ Male Npt Inlet X 1/2″ Female Npt Outlet
• Brass Construction
• Pressure Range 3-60 Psi
• Factory Set At 15 Psi
• Maximum Working Temperature 150 F