Caleffi 573002A AutoFill™ Automatic Fast-Filling Boiler Fill Valve, 1/2" FNPT X 1/2" FNPT w/ Backflow Preventer 6 gallon Our new removable oil window

Our new removable oil window makes it easy to clean and easy to see operational lights regarding gas ballast and cold start

Batteries: AA (x2) Accuracy: +/- 3% Length:  17" Width: 2-3/8" Weight: 2 lbs

or inspect better

Works with Amazon Echo

Remove using a Disconnect Clip or Disconnect Tongs (both sold separately)

Caleffi 573002A AutoFill™ Automatic Fast-Filling Boiler Fill Valve, 1/2" FNPT X 1/2" FNPT w/ Backflow Preventer 6 gallon Our new removable oil windowCaleffi 573002A AutoFill Automatic Fast Filling Boiler Fill Valve, 1 2" FNPT X 1 2" FNPT w Backflow Preventer 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