Size: 2"–12"
Interchangeable with Demco Model DM Butterfly Valve
Wherever face to face distance between flanges is limited, Central-lined Wafer Butterfly Valve is the most agreeable valve to be installed. This series of valve includes Wafer Butterfly Valve and Lug Butterfly Valve. Thank to its unique structure, it presents small weight, flow resistance and operating torque. From full open state to full close state, Valve disc only needs to turn 90 so operating time is short. With its 0-leakage Bi-Directional sealing performance, it can be easily installed and uninstalled from almost any position of pipes or containers.
USAGE
It is widely used in vessels and containers holding corrosive non-corrosive liquid, semi-fluid, gas, powder, etc., in a variety of industries such as petroleum, chemical, metallurgy, power plant, food, medicine, textile, water Supplying/draining, paper making, ship building, environmental protection, etc.
Material List
Body: 65 - 45 - 12, WCB, GG25, 316
Shaft: 420, 316, 1Cr18Ni9Ti
Disc: 65 - 45 - 12, WCB, 316, Aluminum bronze
Seat: EPDM, NBR, Viton
Main Performances
Nominal Pressure(lb): 50, 150
Nominal Diameter: 2 24
Joint type: Wafer
Testing API: 598
Suitable Media: Water, oil, gas, corrosive material
EPDM/NBR seat: -84.2 176 or - 64 5 80
Viton seat: -84.2 428 or - 64 5 220
Dviving type: Handle, worm gear, electrical, pneumatic, hydraulic

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