DEMCO butterfly valves equiv.

These two types of butterfly valves you mentioned are equivalent to DEMCO butterfly valves. They are NEC Wafer/lug butterfly valves (pinless) and NED Wafer Butterfly Valves (Pinless). Both types of valves are suitable for ASME CLASS150/125 flanges, and they comply with API609 and API598 standards. They are available in sizes ranging from 2" to 12" and have features such as long/short neck design, bi-directional sealing, integral flange seal, pinless disc, one-piece body, blowout proof stem, and 10-position locking handle/gear operated. These valves can be made from materials such as epoxy-coated ductile iron, carbon steel, stainless steel, disc material options can be ductile iron nickel plated, aluminum bronze, 304SS, 316SS, stem options can be 416SS, 316SS, Monel, and seat materials available are NBR, EPDM, Viton, Hypalon. They are suitable for various industries such as chemical and petrochemical, oil and gas drilling and production, water and wastewater, marine and government, power, agriculture, mining and materials, and dry bulk handling.