butterfly valve/centerline valves/crane butterfly valves

Triple Offset Butterfly Valves,manual butterfly valve

Triple offset butterfly valve is designed in accordance with API 609 or other standards with features of bi-directional, lightweight, cost-effective and low torque. For triple offset butterfly valves, the working temperature range is -196℃~ 500℃, and there are various materials for choose. In many industries, triple offset butterfly valve can be used not only on-off but also regulating the flow, thus it's replacing traditional Gate, Globe & Ball valve.Design FeatureTriple eccentric design and the cone shaped sealing mechanism for Triple Offset Butterfly Valves1. Zero leakage and tight shut-off2. Fire safe triple eccentric butterfly valve3. Advantage of the geometric construction4. Low friction between a disc and a seat5. Low Torque enables the compact actuator and long lifetime6. Sealing mechanism is designed for heat-expansion7. Wide range of application from the cryogenic to high temperature8. Unique packing material provides fugitive emission packing9. Super long usage life10. Double block and bleed11. Blowout-proof stem1st OffsetTo have positive sealing and increase sealing capacity, the axis of the shaft is placed behind The center line of sealing point on our Triple Offset Butterfly Valves. 2nd OffsetTo reduce running torque and friction between disc and Seat, the Triple Offset Butterfly Valves axis of the shaft is eccentric to the center of the valve and piping line.3rd OffsetCone shaped disc seat and body seat is inclined around the axis of the seat and center line to remove abrasion of the seats.