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.

Severn’s patented OCT TOV butterfly valve technology advances traditional triple offset valve (TOV) sealing technology even further, maximising sealing performance for critical flow control applications and high‑integrity isolation valves.

The Oblique Cone Technology (OCT) moves away from the traditional elliptical sealing shape and introduces a circular sealing geometry, enabling proven double offset butterfly valve sealing principles to be applied within the Severn OCT TOV Butterfly Valve design. This makes it ideally suited for high‑performance butterfly valves, severe service valve applications, and demanding process control environments.

In addition, trims traditionally associated with double offset butterfly valves — such as anti‑cavitation trims for control valves — can be incorporated into the TOV butterfly valve design. This versatility positions Severn’s OCT TOV Butterfly Valve as an ideal solution for combined isolation and control valve applications, where process stability, accurate flow regulation, and reliable shut‑off performance are essential.

Hybrid Sealing Technology – Advancing Butterfly Valve Performance

Severn’s significant investment in control valve research and development has been instrumental in introducing hybrid sealing technology into the OCT TOV butterfly valve.

By combining a hybrid polymer‑metallic valve seal, Severn applies the self‑compensating sealing benefits of triple offset valve technology to a polymer sealing system. The addition of a metallic sealing element ensures that if the soft seal becomes damaged during operation, the metal seal automatically engages, continuing to provide a reliable zero‑leakage butterfly valve seal.

This fault‑tolerant butterfly valve sealing system makes the OCT TOV butterfly valve particularly suitable for:

• Challenging and variable process conditions

• Severe service valve applications

• High‑cycle control valve duties

Proven Testing and Validation

The hybrid butterfly valve sealing system has undergone an extensive and rigorous testing programme, including:

• High‑cycle endurance testing
• Fire‑safe valve testing
• Extreme operating condition validation

These tests confirm that even in harsh operating environments, the OCT TOV Butterfly Valve delivers a high‑integrity sealing solution.

This level of performance would not be achievable with a conventional double offset butterfly valve, where seal damage typically necessitates seal replacement, resulting in unplanned plant downtime, increased maintenance intervention, and potential production losses.

Self‑Compensating Design and Reduced Wear

Severn’s OCT TOV Butterfly Valve is fully self‑compensating for wear, ensuring consistent sealing performance throughout the valve lifecycle.

The third‑offset camming action significantly reduces seal wear by minimising seal contact. Disc‑to‑seal contact occurs only during the final 1–2 degrees of valve closure, substantially lowering operating torque, friction, and mechanical wear.

In comparison, a standard double offset butterfly valve typically maintains seal contact over approximately 10 degrees of rotation, leading to increased wear and reduced long‑term reliability.

Built‑In Safety and Compliance

The standard OCT TOV Butterfly Valve design incorporates the requirements of the most stringent international valve standards.

Key safety features include a dual anti‑blow‑out shaft design, supplied as standard, ensuring the valve shaft cannot be ejected during operation — enhancing plant safety, asset protection, and operational integrity.

The hybrid polymer valve seal is fully compliant with EN ISO 90079‑36 (ATEX) requirements, making the valve suitable for hazardous area installations and ATEX‑rated process applications.

In‑Field Serviceability and Future‑Proof Design

Severn recognises that operating conditions can evolve beyond original design assumptions. To address this, the OCT TOV butterfly valve sealing system has been engineered with interchangeable seal options.

Where required, the hybrid seal can be replaced in‑field with a laminated seal or a solid metal seal — without replacing the main valve body or major components.

This ensures the OCT TOV Butterfly Valve remains:

• Fully serviceable in the field
• Upgradeable to suit harsher process conditions
• Optimised for safe operation, improved plant reliability, and reduced maintenance downtime

Find out more about Severn’s OCT TOV Butterfly Valve, advanced butterfly valve sealing solutions, and high‑performance isolation and control valves by visiting our website via the link below.

Severn Glocon Valves, a leading global manufacturer of industrial valves, is thrilled to announce its participation in ADIPEC 2023, taking place from October 2nd to October 5th at the Abu Dhabi National Exhibition Centre. The event serves as a platform for industry leaders to connect, share knowledge, and introduce advanced flow control solutions. Severn will leverage this opportunity to unveil its latest innovation, the 8500 OCT Butterfly Valve, engineered for demanding oil and gas applications.

Severn will leverage this opportunity to unveil its latest innovation, the 8500 OCT Butterfly Valve, a high‑performance butterfly valve designed for critical isolation and control applications.

The Severn 8500 OCT Butterfly Valve represents a new era in industrial valve engineering, designed to meet the evolving requirements of oil and gas, petrochemical, and energy infrastructure projects. With its precision manufacturing and exceptional service performance, the 8500 OCT Butterfly Valve sets a new standard for reliability, durability, and lifecycle efficiency.

By combining advanced sealing technology, innovative OCT geometry, and robust materials, the valve ensures optimal flow control and long‑term performance under high‑pressure and severe service conditions.

“We are excited to introduce the 8500 OCT Butterfly Valve at ADIPEC 2023,” said Matthew Balderson, Vice President, Middle East & Africa, Severn Glocon Valves. “This valve embodies our commitment to engineering excellence, innovation in valve design, and delivering high‑integrity valve solutions that empower our clients to achieve their operational and production goals.”

Severn’s presence at ADIPEC underscores the company’s commitment to driving innovation in the global energy industry. Visitors to the Severn Valve booth 8349 on the UK Pavilion will have the opportunity to experience first‑hand the features and performance benefits of the 8500 OCT Butterfly Valve, as well as engage with Severn’s valve application experts to discuss specific operational and process challenges.

As a key player in the valve manufacturing industry, Severn’s participation in ADIPEC 2023 demonstrates its continued dedication to delivering cutting‑edge butterfly valve solutions, advanced isolation and control valves, and high‑performance flow control equipment that drive efficiency, safety, and reliability across the oil and gas and wider energy sectors.

For more information about Severn’s OCT butterfly valve technology, or to discuss your valve application requirements, please visit sales@severnvalve.com.

About Severn:

Part of the Severn Group, Severn Valve manufactures and supports high‑quality industrial valves for the energy industries. Its control valves, choke valves, and butterfly valves are pre‑eminent in the global market, underpinning the reliability, safety, and high performance of business‑critical client infrastructure.

Severn’s global reach, technical expertise, and collaborative engineering approach — all founded upon a heritage of British engineering excellence — help assure production continuity for clients and reduce the risk of costly unplanned downtime.

With a deep understanding of asset lifecycle management, Severn Valve offers end‑to‑end valve engineering solutions, enabling clients to meet their core imperatives of safe operations, operational efficiency, and minimum downtime.