The Many PEX Fittings Methods Utilised In PEX Water Delivery Systems
The flexibility and strength of tubing built of high density polyethylene material and connected by PEX fittings offers many advantages over plumbing systems utilising metal or rigid plastic pipes. PEX pipes do not corrode and withstand cold temps without becoming brittle. They cost less than metal or pvc piping. They are much simpler to put in because they are stored in spools and need less fittings.
The resilient pipes are not made brittle by low temperatures. Polyethylene pipes are less expensive than metal pipes and are easier to put in because they do not use as many fittings as metal or rigid plastic arrangements. Since soldering is not used with PEX systems there are no nasty fumes or the risks associated with utilizing a torch.
PEX tubing is wrapped in spools. Because reels weigh less than cut metal or plastic pipes, they are easier to store and cost less to ship. Tubing can be wound off from the reels with no need for coupling fittings. Installing is much quicker and less pricey when it does not involve the running of pipe.
Connecting the tubes is done by placing a fitting into or over the tube and then pinching a ring laid over the tube or fitting. There are a few unique joining methods. Some use copper crimp rings and others utilize crimp rings made of plastic. One arrangement uses a stainless steel clamp. Most fittings are brass although some are made of other metals or plastic. Because PEX tubing is supple and can be bent to a 90 degree angle elbow joints are not needed.
Three basic tools are required for the standard crimping method when working with PEX: a main crimping tool, a pipe cutter, and a de-crimping tool. The pipe cutter tool cuts the tube before putting it into the fitting. There are a assortment of main crimping tools available which can crimp 1/2″ or 3/4″ tubes. A de-crimping tool is employed to remove the copper crimp ring from the tube and fitting.
Fittings can be made of brass, bronze, copper or engineered plastic but the most common material in PEX plumbing is brass. The fittings have ridges designed to form a tight fit. When the ring is crimped over the tube or fitting a high-pressure seal is formed.
It is clear that employing PEX tubing with PEX fittings has important advantages over metal and rigid plastic schemes. It costs less. It is simpler and faster to put in. Its resistance to corrosion and scale makes it last longer.
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