Probably, regular pex uses fittings that go inside the pipe but the od of the fitting is the id of the pipe then some type of crimp ring is used, but that restricts the flow. On a normal home that’s not a big deal. The pipe in my picture is cold expansion pex, which the id of the fitting is the same id as the pipe, uses a pex “crimp” ring, and is not flow restrictive. You put the ring on, expand the pipe and the ring from the inside, put the fitting in it then it shrinks back around the fitting.
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