i have used most of the systems in boats and other mobile plant and have concluded that the simple systems work best one of these is "sharkbite"a system of a nylon type pipe and Brass push together fittings of all types.
this system has the pipe marked so that the exact length required is easy to determine the only tool required is a conduit cutter
to give a clean square cut and all fittings simply just push on and to remove use a pipe clip over the pipe while applying pressure to the fitting simply pull the pipe out. they are by far the easiest fitting to install and remove in a confined space provided you can get your hand to the pipe and fitting.
pipes come in green and brown for easy colour identification of service
types IE hot and cold water
,or salt water
. also a "hard drawn and roll type of pipe in 1/2 inch 12-15mm and 3/4 inch 20mm
this system is sold at most plumbing supply shops in Australia
and if you ask i am sure they would show you a fitting and how it works.
i have only used on boats for 5 years and to date never had any problem with any of the system running salt
or fresh water
. the system allows the fittings to swing around the pipe thus not giving any problem as the pipes may move or vibrate slightly it appears that no stress is in the system.
Hope this helps