Caleffi 553642A AutoFill™ Automatic Fast-Filling Boiler Fill Valve, 1/2" NPT X 1/2" NPT w/ Pressure Gauge D620F1 12-20 AWG Stranded Screw Shearing:

12-20 AWG Stranded Screw Shearing: 6-32

heat treated based on tip type to extend the life of driver bits

Rugged bimetal switch action

Carefully open the box top and remove the plastic wrapped Odor-Block from the box

Compact Three Phase Motor Protector

Caleffi 553642A AutoFill™ Automatic Fast-Filling Boiler Fill Valve, 1/2" NPT X 1/2" NPT w/ Pressure Gauge D620F1 12-20 AWG Stranded Screw Shearing:Caleffi 553642A AutoFill Automatic Fast Filling Boiler Fill Valve, 1 2" NPT X 1 2" NPT w Pressure Gauge The CALEFFI AutoFill is unlike traditional boiler fill valves, AutoFill automatically and quickly fills the system to the preset pressure and shuts off. With the optional pressure gauge the system pressure can be viewed and adjusted as needed, no more guessing. The automatic filling valve is a device consisting of a pressure reducing valve with