On-off valves
Long-lasting tightness with Neles™ on-off valve solutions
Intelligent, reliable on-off Neles valve solutions for general and high-cycle applications will help to reduce the life-cycle costs. Our valve solutions provide long lasting tight shut-off with fast and safe operation together with reduced fugitive emissions. Neles shut-off valves combined with intelligent valve controllers provide diagnostic capabilities and increase plant safety.
Over 60 years of experience in demanding valve applications
Maximize your process reliability with Neles on-off valves
Long-lasting tightness ensures trouble-free production
On-off valve product offering
Butterfly valves
Neles™ butterfly valves are designed to truly optimize the efficiency of process operations by offering best-in-class valve capacity. They provide long-lasting tightness and industry-leading valve reliability, certified to SIL 3. Our product range includes both metal and soft-seated and rubber-lined butterfly valves.
Ball valves
Neles ball valves are designed to meet the requirements of the process industries with improved process safety and efficiency. Our proven technology in design, materials and coatings enhance process reliability in the most demanding shut-off and control applications. For control applications our ball valves provide famous Q-trim™ technology for noise attenuation and cavitation prevention. A wide range of product certifications include fugitive emission, fire-safe and SIL 3.
Segment valves
New Neles segmented ball valve for on-off applications combines the material efficient control valve design with the high capacity and proven performance of Neles on-off valve seating technology. Standard units are equipped with cylinder or manual actuators and intelligent on-off valve controllers to ensure excellent and reliable isolating performance
Flowrox™ slurry knife gate valves
Heavy duty slurry knife gate valve isolates flow even in the most demanding process conditions. The bi-directional flow tolerates backflow and elastomer sleeves on both sides of the gate provide tight shut off. Flowrox™ knife gate valve follows the concept of the ease of maintenance. The valve body is cast in one piece which eliminates the need for sealing between the body halves. Load distribution ring is integrated into the valve sleeves. The valve contains only two service parts; ring sleeves and secondary seal.
Flowrox™ pinch valves
Flowrox™ pinch valves can be either used for shut off, also known as isolation, or control. Every Flowrox pinch valve is fit for the most demanding applications in which conventional valves encounter problems with wear due to increased turbulence.
Limit switches
Integrating your automated valves utilizing Neles™ limit switches will allow you to improve process performance and reduce life-cycle costs. Neles limit switches offer a full range of monitoring, communication, and control platforms ideally suited for quarter-turn and linear discrete valve applications even in extreme process environments.
Valve controllers
High availability and easy interpretation are the key success factors in effective field device data analysis. Neles valve controllers support standardized technologies and ensure the availability and usability of diagnostics information independent of your control, safety or asset management system.
Pneumatic actuators
Neles™ double acting and spring return quarter-turn actuators are designed for use both in modulating control and on-off service. These actuators offer an extremely long cycle life and are well suited for almost any type of rotary valve.
Manual actuators
The Neles™ quarter-turn manual gear actuators has been engineered to meet the requirements of demanding industrial environments. Rugged construction and high performance axial bearings enables smooth and accurate operation.
Valve sizing and selection software
Digital tools for valve sizing, selection, drawing, support, and PID tuning.
Read more about on-off valves and featured customer cases
Suzano advances towards Industry 4.0
The Imperatriz Unit in Maranhão has adopted a solution that predicts faults in high criticality processes and reduces downtime for automatic on-off type valves.
Advanced metathesis unit valves support reliable propylene production
Metathesis is one of the most common propylene production methods, but it can only be profitable if the production unit is reliable. So how do you ensure the reliability of your metathesis unit? For one thing, it means a unit supported with top-quality valves specifically selected for their purpose.
Making a big difference to ethylene project engineering
As demand for ethylene rises, so does the need for valve solutions that offer maximum reliability, safety and performance. After safety, uptime is a major determinant of whether an ethylene plant can be sustainably profitable in an increasingly competitive global market.
Neles on-off valves for long lasting shut-off solutions
On-off valve selection
The selection criteria for on-off valves typically circulates around long-lasting tight shut-off, fast and accurate operations and minimized fugitive emissions. Neles offers a range of valve solutions for both automated on-off valves and manual on-off valves. Our valve offering is complemented by a full offering of other valve assembly components from actuators to limit switches and intelligent valve controllers.
Optimized performance and efficiency
Our butterfly valves offer optimized efficiency with best-in-class Cv and valve capacity with both metal-seated and soft-seated valves available, depending on your process and application requirements. They provide both long-lasting tightness and industry-leading reliability, certified to SIL 3.
Durability and reliability
Our ball valves and segment valves are widely known to provide excellent performance in demanding industrial applications. Our ball valves in particular, when equipped with our Q-trim™ technology, are known for their abilities in cavitation and noise abatement. Our segmented ball valves utilize our unique on-off valve seating technology.
Certified and proven technology
Our on-off valves come equipped with a wide range of product certifications. In addition to SIL3, most of our valves are certified in terms of fire safety and emissions. Our knowhow in valve design, material selection and coatings help further enhance process reliability in even the most demanding applications. You can also rely on our expertise and software tools when it comes to the selection and sizing of your valves.
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