Valve controllers

High availability and easy interpretation are the key success factors in effective field device data analysis. Neles smart valve controllers support standardized technologies and ensure the availability and usability of diagnostics information independent of your control, safety or asset management system.

Smart valve controllers

Digital valve controllers bring advanced intelligence and functionality to your valve operations. Increased levels of automation paired to valve controller capabilities allow for superior utilization of real-time performance data and remote optimization processes.

Increasing valve automation

Modern automatic valve controllers and valve positioners actively seek out opportunities for improving process efficiency and enable the planning of predictive valve maintenance based on accurate data.

Valve controller offering

Neles offers a comprehensive range of both pneumatic, electropneumatic and digital valve controllers to meet the process needs of every valve and every industrial application. Discover the entire Neles offering for your valve positioner and control needs.

Valve controllers offering

Neles™ NDX valve controller

Neles NDX valve controller provides a solution for all valve brands in a wide range of applications regardless of customer or industry. The product delivers all the robustness and reliability you’d expect from a valve controller by Neles. At the same time it is extremely easy to install and use.

Neles™ ND9000™ valve controller

Neles ND9000 is designed to operate on every control valve actuator and in all industry areas. ND9000 is a smart, reliable and future-proof positioner with life-time support. Its superior design features and unique diagnostics provide a solid foundation for performance optimization and proactive maintenance.

Neles™ SwitchGuard™ SG9000

Neles SwitchGuard is a top class intelligent on/off valve controller designed to operate on any valve actuator. Large pneumatics capacity and embedded diagnostic features enable users to guarantee the availability of their switching and high cycling valves in demanding processes.

Neles™ ValvGuard™ VG9000 safety solenoid

Neles ValvGuard is a top class intelligent safety solenoid with partial stroke testing features for emergency shutdown and venting valves. Based on the automatic PST and other diagnostics data, VG9000 increases safety and plant safety targets can be reached more economically than with other solutions.

Axiom™ AN/ANX on/off valve controller

The Stonel Axiom AN/ANX offers unmatched reliability using non-contact position sensing with solid state electronics and contaminant-tolerant pneumatic control. Featuring a space efficient design, the Axiom AN/ANX offers unrivaled convenience and cost-saving benefits in hazardous and general purpose process applications.

Axiom™ AX on/off valve controller

The Stonel Axiom AX platform integrates solid state valve monitoring capabilities with discrete solenoid control for process on/off automated valves. It is suitable for most hazardous locations and general purpose process applications.

Neles™ NE700/NP700 positioner

Neles NE700/NP700 positioners are designed to operate on every control valve actuator and in all industry areas. They offer a rugged construction with few parts. A small moving mass and rigid mounting provide excellent resistance to vibration. NE700/NP700 positioners provide excellent repeatability and accuracy, with either rotary or linear control valves in a wide range of applications.

Discontinued products

Stonel™ Axiom™ AMI on-off valve controller

Discontinued product

Read more about valve controllers and featured customer case

What's new in the latest version of Neles Axiom on/off valve controller?

We interviewed Bob Jenson, Technical Solutions Director, about the benefits of the latest version of Neles Axiom on/off valve controller. Read the Q&A and watch the video to find out more about the valve diagnostics and safety aspects.

Finding the benefits of unified valve automation

The benefits that come from selecting Valmet valve automation components for your automated valves makes perfect sense. Our devices deliver safe and reliable performance, they provide a competitive total cost of ownership (TCO) across their entire lifecycle.

Valve controller usability saves money and time, while improving safety and reliability

At a plant, the usability of a valve controller plays a major role in a number of situations. Whether you need to install a valve controller on actuators in volume production, quickly replace one in real field conditions or interpret its diagnostic information – simplicity is highly beneficial.

Upgrading FCC-unit valve controllers without disruption

In the fluid catalytic cracking (FCC) unit of a large refinery built in the 1940s in the US, a variety of control valve types and brands, along with their proprietary valve controllers, had been installed over the years. This had led to production inconsistency and disruption. The unit wanted to have one type of controller with multiple bracket designs to fit the wide variety of valves in the plant.

Using digitalization to boost efficiency

As a valve manufacturer, Neles’ goal is to meet the customer’s current and future expectations. Those expectations, are often focused on getting the maximum availability out of their valves and systems. That’s why Neles can supply not just products, such as control valves, actuators and positioners, but also a whole suite of related services.

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Valve controllers

Valve controllers, which are often referred to as valve positioners, are the smart field devices that receive commands and control the valve actuators to open or close a valve, or to move the disc or ball into the desired position for optimal flow rates and characteristics. Positioners are used for pneumatically operated valves (ie. valves assemblies with pneumatic actuators) that depend on a positioner to take an input signal and convert it into the desired valve travel.

Pneumatic and electropneumatic positioners are the most common analog valve positioners. They convert a pneumatic or electric signal into the air pressure required to move the valve to the correct position. Digital valve controllers function in a similar manner but include sensors and intelligence to improve the control performance and optimal operation with diagnostics. These smart devices can utilize numerous different communications options including HART 6 or 7, Foundation Fieldbus, or Profibus PA. Bluetooth technology can also be utilized for wireless connectivity.