R D Murphy Co

The Granite Group is a plumbing and heating wholesaler. It is located in Manchester, N.H., and employs more than 300 people. It has a central distribution facility of more than 100,000 square feet and operates aggressive delivery systems. It provides a variety of fittings, such as black malleable brass, cast iron, compression and flare, copper, flanges, forged steel, galvanized malleable and nylon fittings, seamless nipples, soil pipe fittings and welds. It also offers insulation products, adhesives, fiberglass and locks. The company provides a wide range of pipe products, such as backflow devices and gauges. Additionally, it offers valves that include ball, cast, gate, globe, needle and stainless valves.