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Help CenterDEMCO Butterfly Valve Lug Type and Wafer Type
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DEMCO NE-C style Available in sizes 2”-12”, wafer and lug design
General style with flange locating holes 2”-64” Wafer and Lug type available, soft seal & hard seal, Handle and wheel operation
BETTER Butterfly valves available in 2’-12” DN50-DN300, Equivalent to DEMCO NE-C series BFV.
Water and Lug design, identical with NE-C style 2”-12”
10 position locking handle
One piece body to assure high strength and minimum weight, cast in water and lug pattern, rating at ANSI Class 150 (285 psi non-shock)
Top flange with large mounting area for automatic or manual actuators
Disc & seat are configured for low pressure drop and high flow coefficients
Replaceable seat in a wide range of materials of NBR, VITON, EPDM or upon request
Three drop tight pressure ratings 285psi, 200psi, 50psi; 200psi shutoff is widely used;
Bi-directional with identical flow-way from either face, easy installation & disassembly, inspection, replacement of parts;
Application in chemical plants, processing plants, power plants, refineries, shipbuilding, pulp and paper mills, also for heating, ventilation and air condition.
Low cost and light weight to low pressure water, oil, stream, gas and slurry application.
Material available:
Body- Ductile iron, Cast Iron
Stem-416SS
Disc-316SS, Aluminum Bronze, Nickle plated Ductile Iron
Seat-Buna-N, Viton, EPDM, Black Neoprene, Hypalon, Natural Rubber, While Neoprene, or special on request
Temperature within resilient seat limits
Buna-N, 0-180 F°, for hydrocarbon or petroleum
Black Neoprene & While Neoprene, 0-180 F°, for food, beverage, vegetable oil, oxygen
Viton,
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