"What you see is what you get"
Unlike proximity, sonar or capacitance sensing devices etc, which have no physical connection to the valve position, the Rotalin internal rotary conversion mechanism is mechanically coupled to the cylinder shaft and rotating external hub.
'If it's indicating closed it's closed'.
Rotalin is ideal for use on fully shrouded or bonneted knife gates, pinch valves or diaphragm valves which inhibit the use of linkages. The internal mechanism is protected against touch and external influences to fulfill the requirements of accident prevention regulations UVV (VBG 5).
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