Harco Fittings LLC was founded in 1966 in Lynchburg, Virginia. They were the first manufacturer in the United States to produce injection molded gasketed PVC fittings for SDR-26 and SDR-21 pipe, injection molded gasketed PVC fittings for SDR-35 sewer pipe and injection molded gasketed PVC fittings for C900 PVC pipe.
Harco manufactures fittings at its facilities in Lynchburg, Virginia Bellingham, Washington Janesville, Wisconsin and Stevensville, Montana with warehouses in Winter Haven, Florida Dallas, Texas and Phoenix, Arizona.