Samson Rotary Plug & Segmented Ball Control Valves

Segmented Ball Valves, often referred to as V-ball valves, offer a notched ball segment that improves flow control and provides a nearly equal percentage flow characteristic. Their high turndown ratios, compact footprint, and tight shut-off capabilities make them a popular choice for pulp and paper, wastewater, power generation, and slurry applications. The segmented design ensures smooth flow and reduces turbulence, while the rotary action minimises stem wear.

Key Features

Key features and benefits.
1

Key Features

These valves provide an equal-percentage flow characteristic for smooth, accurate modulation across a wide range of flow conditions. Ideal for processes requiring stable control under varying pressures and temperatures.
2

Key Features

The rotary motion minimises wear on internal components, especially at the seat and stem interface. This results in longer service life and reduced maintenance requirements, even in abrasive or corrosive media.
3

Key Features

Available in multiple body materials, trim designs, and actuation types to meet specific application demands. Compatible with pneumatic or electric actuators for full integration into automated systems.

3310 Type Segmented Ball Valves

The SAMSON Type 3310 Segmented Ball Valve is purpose-built to meet the needs of a wide variety of general service control applications across multiple industries. Operating within the PN40 pressure class, this valve excels in environments where process reliability and long-term durability are essential. Its segmented ball design ensures precise control with a nearly equal-percentage flow characteristic, making it ideal for handling fluctuating flow conditions with stability and accuracy.

Engineered to combat typical process challenges such as erosion, abrasion, and particulate-laden media, the 3310 is a trusted solution in industries like chemical processing, power generation, pulp and paper, and water treatment. Its availability in sizes from 1" to 12" and compatibility with ANSI 150 and ANSI 300 pressure classes gives users the flexibility to integrate it into both new and existing pipeline systems with ease.

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62.7 Type Light Duty Rotary Plug Control Valves

The VETEC Type 62.7 Light Duty Rotary Plug Control Valve is expertly designed for general service applications that require reliable performance within the ANSI 300 pressure class. Tailored for use in a wide range of process industries, this valve offers robust control capabilities while effectively handling erosion, abrasion, corrosion, cavitation, and flashing—all common challenges in demanding control environments.

At the core of its performance is a double eccentric rotary plug design, which provides high flow capacities and reduces seat wear, making it a durable and low-maintenance solution. This geometry ensures minimal impact on pressure recovery, even in systems prone to cavitation or flashing, positioning the 62.7 as a powerful and space-efficient alternative to traditional linear globe valves. Its rotary motion offers smoother control, reduced actuator force requirements, and longer service life in continuous process conditions.

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72.3 Type Rotary Plug Control Valves (Long Pattern)

The VETEC 72.3 Double Eccentric Rotary Plug Control Valve is a high-performance solution engineered for demanding general service applications, particularly those within the ANSI Class 300 pressure range. Designed with a double eccentric rotary plug mechanism, this valve combines the control precision of a globe valve with the efficiency and compactness of rotary motion, making it a robust alternative to traditional linear valve designs.

Available in sizes from 1" to 20" and compatible with ANSI Class 150 and 300 pressure ratings, the VETEC 72.3 is ideally suited for process environments where erosion, abrasion, corrosion, cavitation, or flashing are common operational concerns. Its unique design enhances flow capacity and reduces pressure losses, offering superior pressure recovery performance without compromising on control accuracy or reliability.

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72.4 Type Rotary Plug Control Valves (Flangeless)

The Vetec Type 72.4 Rotary Plug Control Valve is a high-performance, flangeless control solution specifically designed for demanding industrial process applications falling within the ANSI 300 pressure class. These valves are expertly engineered to manage complex flow scenarios involving erosion, abrasion, corrosion, cavitation, and flashing—conditions often encountered in aggressive or rapidly changing process environments.

At the heart of the Type 72.4 is its double eccentric rotary plug design, which ensures enhanced flow capacities while maintaining minimal pressure recovery losses. This design delivers significant advantages over traditional linear globe valves by reducing flow restrictions and enabling smoother, more stable control, even in severe service conditions such as cavitation and flashing. The rotary motion also reduces wear and mechanical stress on sealing surfaces, extending operational life and minimising maintenance requirements.

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82.7 Type Rotary Plug Control Valves

The VETEC Type 82.7 Rotary Plug Control Valve is engineered to deliver exceptional performance in both standard and critical service applications, making it a versatile and robust solution across a wide range of industries. Designed to tackle some of the most challenging process conditions, this valve provides reliable control in environments subject to erosion, abrasion, corrosion, cavitation, and flashing—factors that often degrade the performance of conventional valve technologies.

At the core of its design is a double eccentric rotary plug mechanism, which not only ensures smooth, low-friction operation but also significantly enhances flow capacity and pressure recovery. This unique geometry allows the valve to maintain tight shut-off and precise control, while also reducing wear and extending service life. Its ability to minimise cavitation and flashing damage makes it a highly effective and often superior alternative to traditional linear globe valves in demanding flow control scenarios.

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Frequently Asked Questions

Rotary plug valves use an eccentrically mounted plug that rotates to modulate flow, while segmented ball valves feature a notched ball segment that delivers high-capacity control. Both provide precise throttling with compact rotary motion.

They are ideal for applications requiring accurate flow control under challenging conditions, including steam, slurries, high-pressure drops, and aggressive chemicals.

Yes, both rotary plug and segmented ball valves are designed for throttling. They offer equal-percentage flow characteristics for smooth modulation.

Common industries include chemical processing, power generation, pulp and paper, mining, oil & gas, and water treatment.

Rotary motion reduces friction, wear, and seat damage. It also allows for a more compact valve design and extended service life in harsh conditions.

They generally offer an equal-percentage flow characteristic, allowing for stable and responsive control across varying flow conditions.

Yes, they can be equipped with pneumatic, electric, or electro-hydraulic actuators, making them fully compatible with automated control systems.

They are available in a variety of materials including carbon steel, stainless steel, duplex, and high-alloy options, depending on application needs.

SAMSON rotary plug valves, especially in the VETEC range, are engineered to handle cavitation and flashing by minimising turbulence and internal erosion.

Yes, segmented ball valves are especially suitable for abrasive or slurry applications, and SAMSON offers trim options to enhance wear resistance.

Sizes typically range from 1” to 12”, with pressure classes such as ANSI 150 to 300. Specific models may offer wider ranges depending on design.

Most models are designed for unidirectional flow for optimal sealing and performance, but certain configurations may accommodate bi-directional service — always confirm per application.

FAQ

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Samson Rotary Plug & Segmented Ball Control Valves