Emergency shutdown valves

Reliable intelligent emergency shutdown (ESD) valves and actuators with Neles™ ValvGuard™ intelligent valve controllers improve your plant safety cost efficiently. In Neles we have combined our know-how of valves, actuators, safety standards (IEC61508/61511), applications, system operability and partial stroke test devices with intelligent prediction tools. Diagnostic information is presented understandably to enable planned maintenance of potentially failing valve assemblies before they have a chance to impact the process or safety.

Benefits

Single-source supplier for demanding ESD valve assemblies

Field-proven, certified technology gives accurate reliability figures for the final element in your safety loop

Partial stroke testing provides increased availability and safety protection

Emergency shutdown valve 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.

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.

Intelligent safety solenoids

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.

Valve sizing and selection software

Digital tools for valve sizing, selection, drawing, support, and PID tuning.

Read more about emergency shutdown (ESD) valves

SIL 3 – am I safe now?

An emergency shutdown (ESD) valve is part of a safety instrumented system (SIS). It is a vital part of the safety system and often described as the final element. Normally, the term ESD valve refers to all types of safety system valves, such as shutdown, emergency shutdown, emergency ventilation or blowdown valves.

Emergency shut-off valves increase reliability at Serbian refinery

For any refinery, unplanned shutdowns are the equivalent of excessively high costs. For this reason, on-off and safety valves are needed to ensure maximum reliability. Moreover, a valve’s failure to faultlessly close in an emergency situation can have a major impact on people’s health and the environment.

3 steps to ensure ESD valve reliability beyond certification

Final elements, such as ESD valves, are a critical part in the safety lifecycle. When they are not working properly, the safety of the entire plant is in jeopardy. To ensure overall plant safety, correct ESD valve selection plays a vital role. A lot of uncertainty prevails around the relatively new standards IEC 61508 and IEC 61511 and how they should be interpreted for safety valves. This blog post looks closer at this issue and sheds some light on what is an essential but confusing subject.