Mehmet Can ÇAPAR 9th week definitions Part 2

5-Push fit (joint method)

(old answer)

A push fit is a transition fit. It is lso known as  “sung fit” and represents the closet fit that permits assembling parts by hand. With a push fit, there should be no receptile play between the mating parts.

(Rajput R. K., Comprehensive Workshop Practise,  p.208)

(new answer)

Push-fit fittings, also known as crimp-ring fittings, are relatively new. They’ve gained wide acceptance because they are remarkably easy to use and almost never leak. They work on a variety of piping materials and can join dissimilar materials. They are available in a variety of configurations, the most ingenious of which is a braided stainless-steel freeze-repair coupling. To make an in-line repair, such as fixing a freeze rupture, you simply cut out the damaged section and splice in the repair piece, pushing each end fiting over its pipe. Some codes don’t allow push-fit fittings, however, and others allow them only when they remain exposed.

            Another advantage to push-fit fittings is that you can rotate them on the pipe after you have installed them. This feature is handy when you are making retrofit installation.

(Merle HenkeniusUltimate Guide to Plumbing: Complete Projects for the Home)