Caleffi 553642A AutoFill™ Automatic Fast-Filling Boiler Fill Valve, 1/2" NPT X 1/2" NPT w/ Pressure Gauge D620F1 Our Duct Slitter pierces and

Our Duct Slitter pierces and elongates a snip starter hole in sheet metal duct

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

12-20 AWG Stranded Screw Shearing: 6-32

Click the link --> Full Flow to learn more about reducing recovery times

Body Mount: Deck

Caleffi 553642A AutoFill™ Automatic Fast-Filling Boiler Fill Valve, 1/2" NPT X 1/2" NPT w/ Pressure Gauge D620F1 Our Duct Slitter pierces andCaleffi 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