Rotary drive for fittings, especially throttle valves

摘要

Rotary drive for fittings, especially throttle valves in pipelines or the like, with at least one fluidic, linearly functioning pressure/force converter which moves a crank by way of a connecting rod, the end of the connecting rod remote from the crank being rigidly connected to a diaphragm plate of a spring-shackled diaphragm drive used as pressure/force converter. <IMAGE>