Mueller Drilling Machines
Mueller Co. has several drilling machines with which valves that are welded on the gas pipes can be drilled. While the gas pipeline is under pressure! The most common drills are models D-5 and E-5.
Drilling machine type D-5 is used for valves H-17800 in 2″and the 2″ modified valve. The Mueller D-5 drills are suitable for Mueller valves up to a diameter of 4 “.
Drilling machine type E-5 is suitable for smaller valves with a diameter up to 2”. The Mueller E-5 drills are suitable for Mueller valves up to 2″diameter.