Specifications:
Size: NPS 2"~48"
Pressure Rating: Class 150~300
Material: WCB, WCA, WCC, WC6, WC9, C5, C12, LCB, LCC, CF8, CF8M, CF3, CF3M, CN7M, CF8C
Design & Manufacturing Standard: API 609, ASME B16.34, BSEN 593
Face-to-Face Standard: API 609, BSEN 558
Flange Dimension Standard: ASME B16.5, ASME B16.47, BSEN 558
Testing & Inspection Standard: API 598, BSEN 12266
Structure Type: Centerline, Double Eccentric
Operation Method: Manual, Worm Gear, Electric Actuator, Pneumatic Actuator
The lug triple offset butterfly valve, also known as the triple eccentric butterfly valve, is a high-performance valve designed for applications involving high pressure, high temperature, and frequent opening and closing cycles.
Unlike conventional soft-seated butterfly valves, which are not suitable for extreme conditions, the lug triple offset butterfly valve features a three-offset disc design. This structure reduces friction and wear, enhancing sealing performance and extending the valve's service life.
The three offsets refer to:
Eccentric shaft position – preventing direct contact between the disc and seat.
Eccentric sealing path – ensuring a cam-like closing action.
Eccentric seating angle – minimizing friction and reducing wear.
This design provides low operating torque, excellent pressure resistance, and a reliable shutoff mechanism, making the lug triple offset butterfly valve ideal for industries such as oil & gas, chemicals, power generation, pharmaceuticals, and food processing. Additionally, its compact size, lightweight structure, and ease of installation and maintenance further enhance its practicality.
With low noise, smooth operation, and strong resistance to high-temperature, high-pressure, and corrosive environments, the lug triple offset butterfly valve is a superior choice for complex fluid control needs, especially when handling viscous, particulate-laden, or fiber-containing media.
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