The 1LC will butt fuse 1/2” CTS to 1” IPS (16mm - 34mm). It features a semi-automatic locking cam (LC) system to maintain force during the cooling cycle, and incorporates McElroy's patented Centerline Guidance system.

The 1LC requires only one operator, features a more conventional design and uses the same inserts as the McElroy Mini-Mc®. McElroy engineers designed the heater to locate on the guide rods of the unit, similar to the entire line of McElroy fusion machines.