An incoming cold water main is blue polyethylene pipe. What joining technique is suitable?

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Multiple Choice

An incoming cold water main is blue polyethylene pipe. What joining technique is suitable?

Explanation:
Joining polyethylene pipe for a cold-water supply needs a method that seals well without heat or solvents. Compression fittings fit that need: a nut tightens a ferrule and a gasket to compress around the outside of the pipe, creating a reliable seal with PE and allowing easy disassembly if needed. This approach is quick, practical for potable PE piping, and avoids the heat risk that soldering would introduce to plastic, or the threading and compatibility issues that threaded fittings present. Solvent welding is aimed at PVC/CPVC/ABS and relies on solvents that don’t effectively bond polyethylene, so it isn’t suitable for PE piping.

Joining polyethylene pipe for a cold-water supply needs a method that seals well without heat or solvents. Compression fittings fit that need: a nut tightens a ferrule and a gasket to compress around the outside of the pipe, creating a reliable seal with PE and allowing easy disassembly if needed. This approach is quick, practical for potable PE piping, and avoids the heat risk that soldering would introduce to plastic, or the threading and compatibility issues that threaded fittings present. Solvent welding is aimed at PVC/CPVC/ABS and relies on solvents that don’t effectively bond polyethylene, so it isn’t suitable for PE piping.

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