This product specification designates the requirements for Viega PureFlow® Press Zero Lead Bronze fittings with attached stainless steel press sleeves and tool locator ring to be used as connections for Viega PureFlow® PEX, Barrier, and FostaPEX tubing in 5/16 in, 3/8 in, 1/2 in, 5/8 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 PureFlow® Press Hand Tool or PureFlow® Press Power Tool.