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Ramén EDS - Extreme Duty Service
Ramén EDS, which stands for Extreme Duty Service, is our most advanced surface hardening solution developed to extend valve lifetime in the harshest conditions. Ramén EDS delivers exceptional resistance to wear, galling, and corrosion in applications involving slurries, fibers, and other aggressive media - while being far more cost-efficient than ceramic valves.
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What is Ramén EDS?
Ramén EDS combines advanced surface hardening technologies such as SuperExpanite® and PVD coatings to reach extreme hardness levels. Far exceeding traditional coatings, it delivers superior resistance to wear in the toughest applications – making it one of the most durable surface treatments available, at a significantly lower cost and with higher availability than ceramic valves.
Why choose Ramén EDS?
- Up to 3× harder than ceramic coatings
- Similar or even better lifetime in abrasive and aggressive media
- Reduced maintenance and downtime
- Lower total cost of ownership
- High availability compared to ceramic solutions
- Easy replacement of spare parts
Extending valve lifetime beyond ceramic solutions
By combining different surface hardening technologies, Ramén EDS achieves exceptional hardness levels of up to HV* 5000 – significantly higher than traditional solutions such as ceramic coatings, which typically reach up to HV 2000. This extreme hardness enables longer service life, reduced maintenance, and improved reliability even in the most demanding and abrasive applications.
*The Vickers hardness test is a method to measure the hardness of materials. The basic principle, as with all common measures of hardness, is to observe a material’s ability to resist plastic deformation from a standard source. The unit of hardness given by the test is known as the Vickers Pyramid Number (HV).
Proven success of Ramén EDS in demanding applications
Selected customer cases showcasing the proven performance of Ramén EDS in aggressive environments.
Customer: Alumina Plant
Media: Non-Newtonian Mud, 37-45% Solids
In this alumina plant application, Ramén EDS is used to handle highly abrasive, non-Newtonian mud containing 37–45% solids, including caustic soda and residual bauxite. These harsh conditions typically cause severe wear and corrosion in conventional solutions. With Ramén EDS, valve lifetime was increased significantly from 1 month to 12 months.
Customer: Steel Plant
Customer: Mining Plant
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