replying to RogerT, David Perez wrote:
What you have there is called a Posiloc fitting, what it does is connect the
outer steel pipe with the plastic insert pipe. PSE&G would renew/replace old
gas services by inserting a new plastic gas pipe in the old steel gas pipe and
the fitting you show actually crimp the plastic with a brass ring and allows
the plastic to be held in place so that they can then hang the meter using
conventional fittings

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