Severn’s engineering heritage and technical expertise have led to the OCT TOV Butterfly Valve being future-proof for changes in the process conditions to provide increased versatility for the end user seeking reliable high‑performance triple offset butterfly valves, industrial isolation valves, and severe‑service valve solutions.

From the outset, Severn made flexibility a key driving force in the design of the Oblique Cone Technology (OCT) Triple Offset (TOV) Butterfly Valve. Due to Severns extensive diverse engineering heritage and excellence, our expert team of engineers understand that processes and application product demands change over time, whether it is the process conditions or the overall requirements of the valve for the end user. Due to this understanding, the Oblique Cone Technology Triple Offset Butterfly Valve has been designed to incorporate multiple seal options, all fully interchangeable with each other, providing maximum application diversity and usability to ensure safe operations and minimum downtime making it ideal for oil & gas isolation, refinery valve applications, petrochemical process valves, and critical shutdown and control operations.

The Laminate seal is the “traditional” Triple Offset Valve seal and consists of multiple metal and graphite layers providing isolation sealing for high‑temperature, high‑pressure, and severe‑service applications.

The OCT HS seal is a hybrid polymer metallic seal, this seal benefits from a primary metal seal and secondary polymer seal, this provides a reliable and repeatable bubble tight seal time after time. This can also be paired with PTFE packings when graphite being in contact with the line media is a concern. The polymer seal is fully compliant with EN ISO 80079-36 (ATEX) making it an excellent choice for ATEX‑rated butterfly valves, hydrocarbon service valves, and zero‑leakage industrial valves.

The OCT SW Valve takes the hybrid sealing to the next level with its versatile high performance. Severn utilises the OCT-HS seal and has designed a valve that ensure there is no graphite in contact with the line media to remove the risk of costly galvanic effects such as internal corrosion leading to valve failure. Whilst doing so the OCT-SW also maintains firesafe certification making it suitable for Firesafe Triple Offset Valves, API 607 certified valves, and critical isolation applications in hazardous environments.

Should the sealing requirement not become as critical, and process conditions become more arduous, the Laminate and Hybrid seals can be changed for the OCT-SS solid seal. As the name suggests it is a solid metallic seal, that can be made from hard-wearing alloys to add longevity to the sealing life of the valve in arduous conditions and can offer a control valve seat leakage ideal for erosion‑resistant valve applications, abrasive service, and high‑cycle industrial operations.

Based on Severns comprehensive history of severe service control, our team of engineering experts work closely with operators and end uses to identify the correct seal and material selection to provide the maximum reliability and productivity further ensuring minimum downtime supporting industries such as LNG, chemical processing, power generation, and midstream pipeline operations.

All the OCT seals are interchangeable and can be upgraded without the need for main valve components being replaced, further emphasising the OCT TOV Butterfly Valves versatility. The fully in field serviceable valve can be upgraded on-site without the need for specialist tools or knowledge, this further ensures that costly unplanned downtime and site waste is kept to a minimum, along with potential loss in production for the end user. All the seal options can be changed on site within a small space of time to ensure site maintenance costs are reduced by upgrading the existing valve rather than discarding and replacing with a commodity product each time making it a cost-efficient solution for industrial valve maintenance, asset lifecycle extension, and retrofit valve upgrades.

Each OCT valve is specially designed to be versatile and ensure it has multiple purposes for multiple conditions whilst still delivering maximum performance. With the introduction of the interchangeable seal, these can be easily swapped out to match the end users’ requirements, should they change ensuring adaptability for future process changes, sustainability improvements, and long-term operational efficiency.

With over 60 years’ experience in the design and manufacture of high‑performance butterfly valves, Severn launches a range built on decades of learnings and innovative engineering for the process, oil & gas, energy, and power generation industries.

In the dynamic landscape of industrial valve engineering, innovation often stems from a rich heritage of expertise and an unyielding commitment to excellence. Severn Glocon, a renowned name in the world of valve design and manufacturing, have once again proven this statement true with the unveiling of the superior Oblique Cone Technology (OCT) Triple Offset (TOV) Butterfly Valve.

This development represents Severn’s ongoing commitment to advanced valve technology, process reliability, and operational efficiency in the process and industrial energy markets, promising enhanced performance, long‑term reliability, and reduced lifecycle cost.

Engineering Heritage: The Foundation of Excellence 

Severn’s journey to engineering eminence is woven with a tapestry of innovation and dedication stemming back over 60 years. With an engineering history extending back to 1957 and the design and manufacturing of globe control valves, Severn has continuously pushed the boundaries of industrial valve design, earning a reputation for precision engineering, high‑integrity products, and global project delivery.

Drawing from this extensive engineering heritage, Severn has consistently delivered valve solutions for critical service applications that exceed industry standards and address the evolving needs of diverse sectors including oil & gas refineries, chemical processing plants, and power generation facilities.

Unveiling the Oblique Cone Technology (OCT) 

At the heart of Severn’s latest engineering triumph lies the OCT TOV Butterfly Valve, a revolutionary advancement in triple offset butterfly valve design and performance. Unlike traditional butterfly valves, which often suffer from limitations in sealing integrity, repeatability, and durability, the OCT TOV Butterfly Valve introduces circular sealing geometry.

Unlike traditional triple offset designs that use an ellipse, the benefit of circular geometry is that it provides a uniform sealing load around the circumference of the sealing diameter, delivering a reliable, repeatable bubble‑tight shut‑off.

By using circles rather than ellipses, Severn is able to apply proven circular sealing principles and incorporate these into the TOV, delivering a high‑performance isolation valve suitable for severe service conditions and critical process applications.

Repair Intelligence: Designed for Real‑World Performance

Incorporating Severn’s proprietary Repair Intelligence® knowledge — derived from extensive field feedback and forensic analysis of failed valves — each aspect of the OCT TOV Butterfly Valve has been optimised for accuracy, robustness, and long‑term service reliability.

Whether managing critical processes in oil & gas refineries, chemical plants, or power generation facilities, the OCT TOV Butterfly Valve ensures end users achieve their core remit of safe, compliant operations, minimum unplanned downtime, and reduced maintenance intervention.

Advantages for Process and Industrial Energy Markets 

The introduction of the innovative OCT TOV Butterfly Valve signifies a paradigm shift in industrial valve technology, offering measurable operational advantages:

Enhanced Performance:

Severn have designed each facet of this valve to provide the most accurate, reliable, and robust service capability possible, supporting plant uptime optimisation and process stability.

Extended Lifecycle:

Process conditions change over time. Severn have ensured seal interchangeability, allowing users to adapt sealing configurations as operating pressures, temperatures, or service severity evolve — extending valve service life and reducing total cost of ownership.

Increased Safety:

Safety is paramount to Severn’s valve design philosophy. In addition to meeting the strictest industry standards, shaft blowout prevention has been incorporated to enhance safety for end users and the wider industry.

Versatility:

Leveraging Severn’s engineering excellence, the OCT TOV Butterfly Valve delivers superior control in throttling and modulating applications, whilst also providing a repeatable isolation seal, making it ideal for multi‑service duties.

Environmental Sustainability:

Supporting reduced fugitive emissions and tightening environmental regulations, all Severn OCT triple offset butterfly valves are supplied with fugitive emissions packing sets as standard, helping end users meet compliance targets with confidence.

Setting New Benchmarks in Butterfly Valve Technology

Severn’s relentless pursuit of engineering excellence has culminated in the development of the OCT Triple Offset Butterfly Valve — a testament to the company’s commitment to innovation, customer satisfaction, and long‑term asset performance.

As industries worldwide seek high‑integrity valve solutions to meet increasingly complex operational demands, Severn Glocon stands ready to lead the way, setting new benchmarks for performance, reliability, and efficiency in industrial valve technology.