Lug Type Double Eccentric High-Performance Butterfly Valve CB0002
Technical Parameters
Specification Range: DN50-DN600
Pressure: 150LB
Temperature Range: Soft Seat: -29°C to +260°C; Metal Seat: -51°C to +550°C (depending on material)
Face-to-Face Dimension: API609, MSS SP-68, ISO5752
Flange Standards: ANSI B16.5, EN1092, JIS B2220
Main Component Materials:
Valve Body: Carbon Steel, Alloy Steel, Stainless Steel
Disc: Carbon Steel, Alloy Steel, Stainless Steel, Duplex Stainless Steel
Seat: PTFE, RTFE, TFM1600, PEEK, UHMWPE, SS316, SS316L, Chrome-Nickel-Iron Alloy
Stem: Stainless Steel
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Features and Advantages
● High-performance butterfly valves are ideal for on/off and throttling control of gas and liquid media.
● These valves provide bidirectional zero-leakage sealing, high flow capacity, and long service life.
● Double-eccentric butterfly valves feature a dual-offset stem design.
● The shaft is offset from the centerline of the valve disc: this offset ensures a continuous sealing surface on the disc when the valve is fully closed.
● The shaft is offset from the pipeline centerline: this offset ensures that the disc does not contact the seat at all when fully open.
● This double-eccentric design creates a cam-like action as the disc swings in and out of the seat. The disc immediately lifts off the seat, eliminating wear points at the top and bottom of the seat. The elimination of friction extends seat life, reduces operating torque, and improves throttling.
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