The Harrington Corporation (HARCO) is a producer of gasketed joint injection-molded PVC fittings and push-on gasketed joint d ... uctile fittings. HARCO was founded in 1966 in Lynchburg, Virginia, to produce push-on joint ductile iron fittings. HARCO manufactures fittings at its facility in Lynchburg, VA and Janesville, WI with warehouses in Winter Haven, FL; Dallas, TX; and Phoenix, AZ. "Our mission is to operate a profitable business by providing exceptional customer satisfaction and constantly improving every aspect of our business" read more