Hoerbiger’s electrohydraulic valve actuator Trivax is easy, cost-effective and reliable to operate and use. Tri denotes the three technologies – hydraulics, mechanics and electronics – that are blended, vax denotes valve actuator. In contrast to an all-electric drive, Trivax is powerful and durable, thanks to hydraulics. Because of its compact, closed design, its operation is clean and free of leaks, featuring no oil lines. The Trivax is as easy to install and handle as an electric drive. Users can directly operate the integrated electronics using a human-machine interface. In addition, actuation is possible via a remote control centre. Thanks to integrated interfaces to standard field buses (Profibus PA, Hart, Foundation Fieldbus), the valve actuator can also be integrated in existing automation concepts. With its flame-proof encapsulated housing, it also assures safe operation in areas that are prone to explosions (Ex protection according to Atex II2GD Ex d IIB T4). Additional functions such as “Quick Action“ or “Emergency Shutdown“ make this valve actuator also suitable for demanding applications in power plants and in systems of the natural gas, oil and chemicals industries.
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