The Uponor AquaSAFE system integrates the fire sprinklers with a home’s cold-water plumbing to offer greater system efficiencies and added peace of mind. The fire sprinkler system uses the same durable PEX tubing that has been installed for more than two decades in plumbing systems around the world. The flexibility of the tubing eliminates up to half the required connections of a rigid piping system and because PEX can expand up to three times its diameter, the tubing is highly resistant to freeze damage.