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Explosion proof variant for manual valves

14 April 2010

Auma has introduced an explosion proof variant for its limit switching device for manual valves. The Ex rated version has been introduced to support installations in hazardous applications, such as the petrochemical industries.

Explosion proof variant for manual valves
Explosion proof variant for manual valves

The WSH unit generates a position feedback signal for manually operated valves which ensures that operational status can be remotely displayed. The WSH can be mounted directly on a valve, such as a gate valve, or in combination with a valve gearbox. As standard, the WSH is equipped with a mechanical position indicator which can be used to view the valve position and to provide a running indication.
Reporting on demand, Ian Sully, managing director of Auma Actuators which represents Auma in the UK, said:
"This is an important specialist application and an area of established expertise for Auma. The explosion proof version is a significant introduction that responds to demand, particularly from the petrochem sector
"A large number of first generation limit switching devices are coming to the end of their working lives and, with the WSH, Auma is able to provide replacements for other manufacturer’s products. The plug-in connection that has made Auma’s modular actuation solution popular in a wide range of industries is featured: this means that wiring is undisturbed - even if the WSH is disconnected from the DCS."
The WSH provides enclosure protection to IP 67 with an option for IP68. Corrosion protection KN is featured as standard, with KS/KX as an option. A low temperature version is also available.


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