DIN 1725 — Alluminium alloys— Alluminium castings
The fittings are thicker than standard copper. If you are retrofitting into an old wall cavity where pipes are tight together, you may not have the clearance to swing the press tool or fit the jaws around the pipe. Solder has a much smaller profile.
If you mess up a soldered joint, you heat it up, pull it apart, clean it, and try again. If you mess up a ProPress joint, you cut it out. That fitting is destroyed. You lose an inch of pipe and a $4 fitting every time you slip. propresser
While soldering will never die (it is an art form and necessary for tight quarters), the industry has voted with its wallets. Major code bodies (IPC, UPC) fully recognize ProPress. Major specifiers (hospitals, schools) demand it for fire safety. The fittings are thicker than standard copper
ProPress doesn't make you a better plumber than the old-timer with the torch. But it does make you a faster , safer , and often more profitable one. In a trade where margins are razor-thin, that clicking sound is the sound of money being saved. If you mess up a soldered joint, you