Copes-Vulcan RAVEN™ trims are used in severe service applications where true velocity control is needed by limiting the fluid velocities at the exit of the trim. RAVEN™ trim precludes the problems typically associated with high velocity: erosion, vibration, poor control and cavitation.

Every RAVEN™ trim is custom designed to meet the needs of the toughest liquid, steam and gas services in the power and process industries.

Copes-Vulcan has over 100 years of experience selecting the most suitable materials for the operating conditions and the application. Our expertise has been developed through laboratory research and field experience, resulting in valves that offer superior control, actuation and long-term performance.


Lenor knifegate valves are available as manual valves with handwheel or gearbox, or they can be automated with pneumatic cylinders or electric actuators.


The RAVEN™ Control Valve incorporates a unique advanced design that is superb at rapidly reducing flow velocities, resulting in valves that provide quiet, non-cavitating and non-erosive service. Ultimately, each RAVEN™ trim is specifically designed to provide the finest severe duty valve service by:

Reducing and
Erosion and


  • Tight Shutoff: Equipped with various plugs (unbalanced, balanced, tandem, etc.) RAVEN™ can provide shutoff classes ranging from ANSI/FCI Class IV to VI and MSS-SP-61.
  • Resists Plugging and Galling: An internal pressure balancing groove on each disk ensures equal pressure distribution eliminating the potential for side loading and galling of the plug. Bypasses in the flow paths allow entrained debris to clear the main fluid path.
  • Easily serviced: Quick-change design with no threaded or welded parts. Seat ring is a separate replaceable item.
  • Characterization: Able to provide application specific performance response for optimum system performance.
  • Quieter: Size for size RAVEN™ trim has been proven quieter than the stacked disc trims of our competitors in extensive laboratory testing.
  • Adaptable Flow Direction: Flow can be either over or under the seat depending on the fluid, the service and in some instances, the piping configuration.
  • Retrofits/Upgrades: Readily tailored to fit valves previously supplied without RAVEN™ trim Copes-Vulcan or other brands.


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In the world of industrial valves and control solutions, the Copes-Vulcan brand has established itself as a trusted and innovative leader. With a rich history and a commitment to excellence, Copes-Vulcan offers a wide range of products designed to meet the needs of various industries. In this blog, we will delve into the details of the Copes-Vulcan brand, explore the key features of the Raven™ Trim, and discuss its application scenarios.

More about the Copes-Vulcan Brand:

Copes-Vulcan, a part of Celeros Flow Technology, is a renowned brand that specializes in providing advanced valve and control solutions for critical applications. With over a century of experience, Copes-Vulcan has built a reputation for delivering high-quality products that meet the demanding requirements of industries such as power generation, oil and gas, and petrochemicals. Their commitment to innovation, reliability, and customer satisfaction has made them a trusted partner for companies worldwide. To learn more about the Copes-Vulcan brand, visit their official website at https://www.celerosft.com/en-us/brands/copes-vulcan.

Key Features of the Raven™ Trim:

The Raven™ Trim, developed by Copes-Vulcan, is a cutting-edge valve trim technology that offers several key features for enhanced performance and reliability. Some of the notable features include:

    • Anti-Cavitation Design: The Raven™ Trim is designed to minimize cavitation, a phenomenon that can cause damage to valves and piping systems. The trim utilizes advanced flow control techniques to reduce pressure differentials and prevent cavitation, ensuring smooth and efficient operation.
    • Noise Reduction: The Raven™ Trim incorporates noise reduction features to minimize the noise generated during valve operation. This is particularly beneficial in applications where noise control is crucial, such as power plants or refineries.
    • Enhanced Control: The trim provides precise control over flow rates, allowing for accurate regulation of process variables. This level of control is essential in industries where precise flow management is critical for optimal performance and safety.
    • Extended Service Life: The Raven™ Trim is designed to withstand harsh operating conditions and provide long-lasting performance. Its robust construction and advanced materials ensure durability and resistance to wear, extending the service life of the valve.
    • Easy Maintenance: The trim is designed for easy maintenance, with features such as replaceable components and simplified access to internal parts. This reduces downtime and maintenance costs, making it a cost-effective solution for industries.


Application Scenarios for the Raven™ Trim:

The Raven™ Trim is suitable for a wide range of application scenarios across various industries. Some of the common application scenarios include:

    • Power Generation: The trim is well-suited for power plants, where precise control of steam or water flow is crucial. Its anti-cavitation design and noise reduction features make it ideal for turbine bypass systems, feedwater control, and other critical applications.
    • Oil and Gas: In the oil and gas industry, the Raven™ Trim can be used in applications such as control valves for oil pipelines, gas processing plants, and refining processes. Its ability to provide accurate control and withstand high-pressure environments makes it a reliable choice.
    • Petrochemicals: The trim finds its application in petrochemical plants for tasks such as controlling the flow of various chemicals, gases, and liquids. Its extended service life and easy maintenance features make it a cost-effective solution for these demanding environments.

The Copes-Vulcan brand is synonymous with quality and innovation in the field of industrial valves and control solutions. The Raven™ Trim, a key offering from Copes-Vulcan, provides advanced features such as anti-cavitation design, noise reduction, enhanced control, extended service life, and easy maintenance. These features make it a reliable choice for a wide range of application scenarios in industries such as power generation, oil and gas, and petrochemicals. By choosing Copes-Vulcan and the Raven™ Trim, companies can benefit from improved performance, reliability, and efficiency in their operations.

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