Throttle valves with seal, electrically operated with an adjustable Deufra drive

Throttle valves with seal, electrically operated with an adjustable Deufra drive, inclusive of two adjustable potential free limit switches and thermal circuit breaker, with a switch over time for 90? of 6 seconds

Please Observe

Switch over time for diameter 224 and greater is 90? at 35 seconds. Complete with emergency hand