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Wafer/Lug Triple Eccentric Butterfly Valve

Wafer/Lug Triple Eccentric Butterfly Valve
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Delivery Time: 3 days
Expiry Date: long-term effectiveness
Last Update: 2019-03-05
Views: 16
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As one of the leading wafer/lug triple eccentric butterfly valve manufacturers and suppliers in China and equipped with a productive factory, Shanghai Hugo Valve Co.,Ltd is always at your service.Triple Offset lug/Wafer Butterfly ValvesDescription1, Triple-Eccentric Control and Shut-off Butterfly Valve,Lug-type Body,High Performance & High Pressure,metal Seated,Design Acc. to ASME B16.34 and API 609,Optional Fire-Safe Version Acc.to API 607,Double Flanged and Welding Ends are Optional2, wafer/lug type triple eccentric butterfly valve adopted three-dimensional eccentric theory design, which idealized the sealing surface’s space motion trail, there is no friction and interference between sealing surface, choose suitable sealing material, all of this guaranteed the triple eccentric butterfly valve’s sealing, corrosion resistance, high temperature resistance and abrasive resistance3, When the valve is going to be opened, take advantage of disc eccentric features, the disc and seat contact flashily, then break away from the seat rapidly, which reduced the seal pair’s abrasion, friction torque is small, it’s flexible to open.Conical surface can enable the disc to reach sealing by through seat’s inner bore when the valve be open or closed.Conical disc’s turning radius is larger than contact location’s turning radium of seal pair, so the disc will be more tight when the valve be closed tightly more and more to reach self-locking 4, The triple eccentric butterfly valve, which makes use of a metal seat, is therefore able to withstand a greater amount of pressure, compared to resilient seated butterfly valve, the seal of the eccentric disc could be either metal/Graphite multi-layer design, or fully metal-to-metal design. The multi-layer design could achieve zero leakage and simple maintenance, while the metal-to-metal design is more reliable in higher temperature and pressure. Basically speaking, triple eccentric butterfly valve is both applied in shutoff or throttling service.5, Flanged butterfly valves have longer face-to-face dimensions and stronger structure compared with wafer or lug type butterfly valves, for butterfly valves size larger than 24", flanged end is recommended for longer service.Features of Triple Eccentric Butterfly ValvesEccentric Disc DesignMulti-layer Disc Seal StandardFully Meal-to metal Seal OptionalUni-directional FlowWafer Body Type, Lug Type or Flanged TypeApplicable Standards of Triple Eccentric Butterfly ValvesA) Design & Manufacture: API 609, EN 593, MSS SP-68B) Face to Face Dimension: API 609, EN 558C) End Connection: ASME B16.5, EN 1092, JIS B2220D) Test and Inspection: API 598, EN 12266Sizes: 2" - 60" or DN50 - DN1500Pressure Rating: Class 150 - Class 600 or PN10 - PN100Materials of Valve Body: WCB, LCB, WC6, WC9, CF8, CF3, CF8M, CF3M, etc.Operated by: Lever, Gear, Pneumatic, hydraulic and Electric actuator
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