The Series T – High Performance Triple Offset Butterfly Valve is engineered for durability, consistent performance and ease of automation, manufactured under international standards including API 609, MSS SP-68 and EN 593. Every valve is 100% pressure tested and fully serialized prior to shipment.
Key Features:
- Triple offset geometry with three unique offsets ensures zero leakage, torque seated shutoff with minimal wear and friction free closure
- Cam-action closing eliminates seat to disc rubbing, extending sealing life and reducing operating torque compared to double and concentric designs
- Available in wafer, lug, or double flanged construction for Class 150 to Class 600 pressure ratings
- One piece stem drives the disc assembly for precise seating of the laminated seal ring against the hard faced weld overlay body seat
- Laminated or Metal seat configurations available - both fully field replaceable without modifying the retainer ring reducing downtime and maintenance costs
- Live loaded retainer ring with disc springs ensures consistent sealing force and compensates for thermal expansion/contraction in extreme conditions
- Blowout resistant stem with snap ring retention system prevents stem ejection under pressure
- Live loaded packing system with Belleville washers suitable for fugitive emission, high temperature, high cycle and firesafe services
- Bolted thrust bearing absorbs axial loads for stable, smooth valve operation
- Suitable for high temperature, cryogenic and severe service applications with reliable bidirectional dead end service capability
