Atex Valve Alex certified is necessary, but, most applications involving potentially explosive environments, sometimes appear will restrictive you when selecting pneumatic valves.
However, the leading manufacturers of control and measuring systems for fluids and gases, they have been delivering solutions for hazardous areas for the last quarter of a century. The development of ATEX certified versions of its industry-leading components, as well as complete control systems, has been supported by the establishment of a center of competence in some of the countries as Germany.
At the operational end, the ELEMENT valve controllers were initially designed to operate CLASSIC (Bürkert’s) range of process valves and they are now rapidly becoming the global standard for process control, setting the benchmark for the major manufacturers. Having already been developed to control third-party process valves, the latest improvements include ATEX and IECEx approvals for operation in Zones 2/22 and 1/21 where potentially explosive atmospheres may exist.
Similarly, with such a wide variety of applications, the use of quarter turn valves has become widespread. But it is so important to ensure that the selection process is carried out carefully, so as to avoid poor performance or incompatible equipment.
Development of this commonly used valve actuator includes the Type 3004 actuator, which is classified as ATEX II 2 GD Ex d II B T6 and rated to IP67 and therefore suitable for installation in areas classified as Zone 1.
Another enhancement can be made using servo-assisted pneumatic valves, such as the Type 6519, which can be installed individually or in manifolds and can be used to control double or single acting actuators. Available in EEx m and EEx i versions, they provide a high flow rate capacity and reduced power consumption- which is an important factor, especially, in larger installations, where the cumulative power consumption of a process control system can be significant.
The benefits of these individual components can only be properly appreciated when they are brought together within a comprehensive design structure that maximises their benefits. This can be accomplished with the AirLINE Ex 8650, which is one of the only electro-pneumatic automation systems designed for installation in Zone 1.
It can be used for fine chemicals, pharmaceuticals, cosmetics and oil & gas and this system is particularly suited to decentralized process. In these application areas, the system is unique, as it is the only compact electro-pneumatic automation solution allowing integration of EEx ia rated pneumatic valves without additional wiring.
With this system such as this, can only really deliver the expectations of the clients if they are conceived, designed and manufactured by a single, dedicated team with the experiences to another appreciate the fine detail involved.
Reliability and durability are important when choosing a discrete atex valve controller. Today’s atex valve controls need to be rugged to resist the factory requirements.
Only buy the products that have been tested for durability in extremely high and cold temperatures. And prove the resistance to damage or splitting, and even in corrosive environments or abusive conditions.
Completely safety if you choose the reputable manufacturers they will provide durability testing for millions of cycles to ensure product performance is reliable. If you can selection of rigidly-tested products increases the life cycle performance and reduces potential replacement or maintenance costs.
Where to Durability testing? Durability testing may consist testing in dust rooms to ensure dusty products. Testing against strong water blasts, or even submergence.
The product must be tested against hundreds of corrosive and caustic chemicals at different times, temperatures. And exposure levels and should be proven to be resistant to impact. It is important to understand how a product performs under extreme conditions to have the confidence that it has been designed for durability.
Aluminum, stainless steel and engineering plastics are standard construction materials. Besides that, require a special coating option for exceptional harsh environment treatment.
The best is supplier should be explored the proactive design of products and have to should pass the robust testing standards of different key certification bodies. Especially, they have the vision to predict trends and requirements in future.
Consider the total installation space- is always an important consideration. Consider the total installation space, including the width and height of the atex valve controller, as well as accessories such as brackets or solenoids. Also consider the height of the visual indicator. As it can easily break if it is not proportional to the product.
At present, It is not difficult to explore and find out suppliers of removable atex valve controllers that provide enough options to meet complex application needs. Try to check with sellers as Profibus, DeviceNet, and AS-Interface.They will comprehensive solutions will provide all important fieldbus protocols.
Many process manufacturers have plant operations around the world. As factories expand globally, increasing global demand for certified products. Choosing globally certified products makes it easier to standardize around the world, and so operating locations are more efficient and cost-effective.