Butterfly Valves
Design: Seal on Body, Seal on Disc, High Performance – Double & Triple Offset.
Typical Applications: Gas Processing, Petrochemical, Chemical, Water & Sewage, Power and Mining.
End Connections: Wafer, Lugged and Double Flanged (ANSI & AS4087)
Pressure Class Range: ANSI Class 150 to 900, PN10 / PN16 / PN25 / PN40 / PN64
Sizes: DN50 to DN3600 (2” to 144”).
Body Materials: Carbon Steel, Stainless Steel, Cast Iron, Ductile Iron, PFA / PTFE Lined.
Seat & Seal Materials: Virgin PTFE, Reinforced PTFE, PFA, Viton, NBR, EPDM and Metal.
Accessories: Actuators, Limit Switchboxes, Solenoids, Extensions and Special Adaptions.
Quality: Pressure Tests – API 598, Fire Tests – API 6FA, API 607.
Standards: Design, Production and Testing: AS, ASME, ANSI, API, and ASTM. Quality System: EN ISO 9001:2008, EN ISO 14001:2004.
Design Details: A butterfly valve is a valve which can be used for isolating or regulating flow. The closing mechanism takes the form of a disk. Operation is similar to that of a ball valve (quarter turn) which allows for quick shut off. Butterfly valves are generally favoured because they are lower in cost to other valve designs as well as being lighter in weight, meaning less support is required. The disc is positioned in the centre of the pipe, passing through the disc is a rod connected to an actuator on the outside of the valve. Rotating the actuator turns the disc either parallel or perpendicular to the flow. Unlike a ball valve, the disc is always present within the flow, therefore a pressure drop is always induced in the flow, regardless of valve position. The valve may also be opened incrementally to throttle flow.
Applicable Standards: |
DESIGN & MANUFACTURE CONFORM WITH: API609, MSS SP-67 CONNECTION DIMENSION CONFORMS WTIH: ASME B16.5, ASME B16.47 STRUCTURE & LENGTH CONFORMS WITH: API 609, MSS SP-67, ISO 5752 INSPECTION & TEST CONFORMS WITH: ISO 5208, API 598 |
Materials of parts | |
Body Disc Seat Stem Ring Bolt Nut Clamp Bushing sleeve Gasket Packing | WCB/LCB/CF8M/CF8/CF3M/CF3/WC6/WC9/CD3MN WCB+ENP/LCB/CF8M/CF8/CF3M/CF3/WC6/WC9/CD3MN STL/13Cr/316/316L/304/304L/F316L/Monel/F51 F6a/17-4PH/F304/F316/F304L/F316L/F51/Monel 304+Flexible graphite/316+Flexible graphite/Stainless steel series B7M/B8M/L7M/B16M 2HM/8M/7M/4M A36+ENP/Stainless steel series C95200/C95500/SS+304 Flexible graphite+304/Flexible graphite+316 Flexible graphite |
*Materials could be choosed according to customers' requirement & working condition. | |
Features and Application: | |
Three eccentric butterfly valve series is the newly-developed long-life and energy-saving products. The sealing is metal to metal, which couldbe changed to be seal ring to metal, stainless steel plate and composite graphite to metal. Under the working condition of high temperature and high pressure, it still has a stable sealing performance. Our company adopts optimization design and new technology, so that the torque is small, gainning the point of energy-saving, labor-saving and reliable sealing performance, thus to ensure the high-reliability of corrosion-resistantance, stand fire and wear-resistantance. This product is widely used in petroleum, natural gas, piped gas and medicine, food industry, industrial environmental water treatment and shipping industry. |