Viega FostaPEX tubing contains an aluminum layer, but its dimensions differ from standard PEX-Aluminum-PEX. FostaPEX only works with one kind of fitting: PEX Press. While PEX Press fittings also work with any kind of standard, SDR-9 PEX tubing, make sure you prepare FostaPEX tubing properly prior to making any connections.
Use Viega’s FostaPEX Prep Tool to do this. Available in two configurations (one for 1/2” and 3/4” tubing and one for 5/8” and 1”), the tool peels back the outer layers of the FostaPEX and makes it compatible with PEX Press fittings. Visit SupplyHouse.com today to purchase more Viega products.
