ACEV proudly introduces the Tri Lok triple offset butterfly valve, an exceptional isolation valve tailored for applications ranging from vacuum to high-pressure environments, and ideal for scenarios demanding absolute zero leakage. Unlike gate, globe, or ball valves of comparable size and pressure class, Tri Lok offers substantial space and weight savings, while significantly reducing installation and maintenance expenses.

The Tri Lok's non-abrasive, metal-to-metal seal ensures zero leakage with minimal torque and boasts fire-safety certification. The seal ring maintains uniform sealing with the seat, achieving complete shutoff regardless of flow direction. For high-temperature and severe applications, Tri Lok features a robust metal seal ring, guaranteeing dependable sealing performance across the entire pressure and temperature range.

Unique to its class, ACEV's Tri Lok boasts a splined disc/stem connection. This innovative design allows the disc to move axially independently of the stem, preserving the alignment of the seal ring and seat, unaffected by temperature fluctuations or stem pressure effects. This design eliminates typical misalignment issues associated with rigid disc-stem attachments, enhancing overall strength. The precise fit between the disc and stem minimizes hysteresis.

Triple Offset Geometry:
The triple offset valve features a stem offset on both the X and Y axes of the butterfly valve's centerline, creating a cam-like motion during operation. The third offset consists of an inclined conical profile on the valve sealing surface, facilitating smooth engagement and disengagement of the seat and seal ring without interference. This triple offset design eliminates friction between the seat and seal ring during valve travel, reducing wear and extending the valve's lifespan.

Upon full engagement of the seat and seal ring, torque is applied to create a bidirectional, zero-leak, metal-to-metal seal. Consequently, triple offset valves are distinguished as "torque-seated" rather than "position-seated," as seen in resilient or high-performance products.

The globe valve body boasts several designs, with the Tee-type, Y-type, and angle type being the most prevalent.

The Z-type/Tee pattern, the most common and straightforward design, features a Z-shaped partition within the globular body that houses the seat. This horizontal seating allows the disc and stem to move perpendicular to the pipe axis, resulting in significant pressure loss. However, the seat is easily accessible through the bonnet and attaches to a large opening at the valve body's top. Despite pressure drops, the valve operates seamlessly when throttling is required.

The Y-type/Wye pattern addresses the high pressure drop issue of the Z-type valve. In this design, the seat and stem are angled at approximately 45 degrees to the pipe axis. Y-body valves are ideal for high-pressure applications where pressure drops are noticeable.

The angle type design redirects the flow direction by 90 degrees without needing additional tools or connectors. The disc lifts against the downward flow direction. These valves are suitable for fluctuating flows due to their ability to withstand the slugging effect.