Double Offset Butterfly Valve is designed to offer rugged reliability and extremely easy maintenance in the field. These valves are bi-directional with zero leak features. Resilient seat design can also achieve low torque, which is easy for operation High-performance valves deliver the highest quality and highest value available for meeting today’s demanding requirements of zero leakage. An eccentric butterfly valve means that the stem does not pass through the centerline of the disc, but instead behind it (opposite of flow direction). When the stem is located right behind the centerline of the disc, the valve is called single-offset. This design is developed to reduce the disc contact with the seal before the full closure of the valve.
Series: D110
Size: 3″ to 16” (80 mm to 400 mm)
Material: Cast Iron Gr 210, ASTM 216WCB, ASTM 351 CF8, ASTM 351 CF8M
Disc: ASTM 216 WCB, ASTM 351 CF8, ASTM 351 CF8M
Seat: Nitrile, EPDM, Viton, Hypalon, Silicon, PTFE, RPTFE
Stem: AISI 410, 304, 316, 304L, 316L
Gland Seal: EPDM, NBR, PTFE, SILICON, VITON
Pressure Rating: 150#
End Connection: Wafer Type, Flangeless, Sandwich Type
Design: Soft Seated, Metal Seated
Operation: Lever operated, Gear Operated, Pneumatic & Electric Actuator
- Design Standard: BSEN 593, ISI 3095, API 609, AWWA C 504
- Pressure Testing: API 598, BSEN – 12266-1, AWWA C 504
- Wafer/Semi Lug/Lug Type: API 609
- Face to Face: ANSI B 16.10, API – 609, BSEN 558, AWWA C 504 / 516
- Flanged Drilling: ANSI 16.5, AWWA, Series-A, Series-B, EN 1092-1, EN 1092-2
- Quality Assurance: ISO 9001
- NACE: MR 0103, MR 0175
- Self-energising Disc Seal – Bi-directional bubble-tight sealing.
- Bubble tight shut off over an extended period of service.
- Facilitates easy installation between flanges and saves space.
- One-piece blowout-proof Shaft.
- Integral actuator mounting platform.
- Low emission packing set available for special service.
- Double-offset butterfly valves also cool air, water, and gases. They can also compress air or gas applications and control/isolate flow. In some situations, the valves can stop backflow from occurring.
- Both gas pipelines and remote offshore oil rigs operate in extreme conditions. So, they require durable valves like double-offset valves to hold up against harsh environments and refinery media.
- The valves help reduce maintenance tasks and add longevity to different systems. Butterfly valves are very rugged and often designed to meet specific uses.
- Some industries use double-offset butterfly valves as a standard shut-off valve. That’s because they offer a much tighter seal than globe and gate valves.
- When used at the dead end of the pipeline, reverse preferential flow direction
Our Clients
