This product specification designates the requirements for Viega PureFlow Press Polymer fittings with Smart Connect technology and attached stainless steel press sleeves with tool locator ring to be used as connections for Viega PureFlow PEX, ViegaPEX Barrier, and FostaPEX tubing in3/8 in, 1/2 in, 3/4 in, 1 in, 1-1/4 in, 1-1/2 in and 2 in sizes as available. The connections are to be completed with the aid of a Viega PureFlow Press Hand Tool or Viega PureFlow Press Power Tool.