Plain end couplings save the day

US towing company McAllister repeatedly experienced leaks in the engine cooling water line on its harbour tug, the ‘Robert E. McAllister’, when bolted-sleeve couplings failed.

Built in 1969 by Peterson Builders of Sturgeon Bay, Wisconsin, the Robert was originally a United States Navy vessel

US towing company McAllister repeatedly experienced leaks in the engine cooling water line on its harbour tug, the ‘Robert E. McAllister’, when bolted-sleeve couplings failed.