Caleffi 553642A AutoFill™ Automatic Fast-Filling Boiler Fill Valve, 1/2" NPT X 1/2" NPT w/ Pressure Gauge D620F1 If your job requires you

If your job requires you to pull in cabling

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

Maximum spool quantity: 6

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

Caleffi 553642A AutoFill™ Automatic Fast-Filling Boiler Fill Valve, 1/2" NPT X 1/2" NPT w/ Pressure Gauge D620F1 If your job requires youCaleffi 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