DEMCO Type Butterfly Valve

DEMCO BUTTERFLY VALVE FEATURES AND APPLICATIONS
1. One‐piece cast body: Cast in both wafer and tapped‐lug patterns in a wide variety of material choices, the most durable butterfly Valves feature a one‐piece body for minimum weight and maximum strength.
2. Dry stem journal: The unique stem hole design in the disc ensures a dry stem journal and the hard‐backed seat allows ease of installation, reliable operation, and are available in sizes 2 in. through 12 in.(50 mm through 300 mm).
3. Bi‐directional sealing: The valves provide bi‐directional bubble‐tightsealingatfull ratedpressure with dentical flow from either direction.
4. Integral flange seal: Molded into the edge of the seat is an integral flange seal which accommodates ASME weld neck, slip‐on, threaded and socket flanges as well as “stub end type C” flanges.
5. ASME Class 150 rating: Body rating is ASME Class 150. Wafer body diameters are designed to self‐center in ASME Class 150 flange patterns.
Engineered for long‐term, maintenance‐free performance, the butterfly valves are commonly selected for a variety of applications spanning a wide range of industries:
Oil and gas drilling and production◆Mining and materials◆ Dry bulk handling◆ Water and waste water
Chemical and petrochemical◆Agriculture Marine and government◆ Power ◆Cooling towers (HVAC)