Double Flange Butterfly Valve Introduction The double flange butterfly valve is a PN16 flanged valve for water, HVAC, sewage and compatible industrial services. Available in 2–48 inch sizes, it can be supplied with handle, worm gear, electric or pneumatic operation. Selection should confirm flange drilling, face-to-face standard, body and seat materials, temperature, pressure and required actuator. The main features of flange butterfly valve are: Small and lightweight, easy to disassemble and maintain, and can be installed at any position. Simple and compact structure, small operating torque, 90 ° turn to open quickly. flow characteristics tend to straight line, good regulation performance. The connection between butterfly plate and valve stem adopts pinless structure, which overcomes the possible internal leakage point. butterfly plate outer circle using spherical modeling, improve the sealing performance and extend the service life of the valve, with pressure opening and closing more than 50,000 times still maintain zero leakage. The sealing parts can be replaced and the sealing is reliable to achieve two-way sealing. Butterfly plate can be sprayed with coating according to user requirements, such as nylon or PTFE. Drive mode can be manual, electric or pneumatic. Flange butterfly valve is suitable for temperature ≤ 120 ℃ or ≤ 150 ℃, nominal pressure ≤ 1.6MPa water supply and drainage, sewage, food, heating, gas, ships, hydropower, metallurgy, energy systems and textile and other industries, especially for two-way sealing and the valve body is easy to corrosion occasions, as a flow control and interception of the medium. Note: The prices marked are for 2-12 inch handle flange butterfly valves, and for 14-48 inch are worm gear flange butterfly valves. Flange Butterfly Valve drawing Standard of implementation Category Details Type Flange Face to Face API609, BS5155, DIN3202, ISO5752 Flange DIN, BS, UNI, ISO, ANSI, AS, JIS Mounting Flange ISO5211 Working Pressure PN16 (200PSI) Application HVAC, Water Supply & Sewage, Food & Beverage, Chemical/Petrochemical/Processing, Power and Utilities, Paper and Pulp, Ship Building Standard Materials Of Main Parts ITEM PART NAME MATERIAL 1 Body CI/DI/CS/SS 2 Seat EPDM/PTFENITON/NBR/Hypalon 3 Shaft SS416/316/304 4 Disc CF8/CF8M/DI+Ni 5 Pin SS304/SS316 6 Bushing PTFE/Bronze 7 O Ring NBR/EPDM Dimensions:(mm)
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