Demco, part of the Cameron valve division was established in 1947. Demco is manufacturer of one of the most durable of all resilient-seated butterfly valves in the industry and the premier designed Gate Valve in the oil and gas drilling market, specifically engineered for the rigorous requirements of oilfield applications.
Sizes 14 to 36 in [350 to 900 mm] are available in both wafer and lug styles.
The wafer body has two drilled locator lugs at the top and bottom for ASME Class 150 flanges. Bronze bearings are installed on both stems for reduced operating torque.
Butterfly-style DEMCO valves for marine applications are available in the NE-C lug, NE-I lug and wafer, NE-D wafer, and NF-C lug styles and conform to