Select Stone Supply Co, 51 N 2nd St, Souderton, PA 18964, US

Duff Company offers one of the widest selections of products in its industry for the commercial, institutional, maintenance and engineering customer. Plumbing, heating and industrial supplies; pumps; steam specialties; and water treatment equipment are a part of the company s product line. Duff s plumbing and heating division encompasses virtually every aspect of the industry from everyday repair parts to special order hard-to-find parts; residential china to sizing; and supplying complete commercial heating jobs. The company offers pumps from a variety of manufacturers that handle hot and cold water, as well as other fluids for processing, light industrial applications and pressure-boosting systems. Duff Company is located in Norristown, Penn.