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What is the difference between PAL Insert Fittings and the Polybutylene Plastic fittings that failed in some parts of North America?

April 26, 2017difference failed fittings insert north america PAL plastic polybutylene

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What is the difference between PAL Insert Fittings and the Polybutylene Plastic fittings that failed in some parts of North America?

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PAL fittings are made of a special polymer designed for hot water applications where water chemistries may vary. The Plastic fitting that experienced failures was made of a product called Acetal which, when exposed to certain levels of chlorine, would begin to embrittle or degrade over time.