electronic travel limiter for use in flow control applications, namely, an apparatus for interfacing between a valve actuator and a quarter turn valve used as an emergency shut down valve for verifying the operability of the actuator valve package by permitting the actuator valve package to be rotated within a predetermined range of movement without having to completely close the valve

'actuat':18,37,43 'apparatus':12 'applic':9 'close':59 'complet':58 'control':8 'electron':1 'emerg':27 'flow':7 'interfac':14 'limit':3 'movement':54 'name':10 'oper':34 'packag':39,45 'permit':41 'predetermin':51 'quarter':21 'rang':52 'rotat':48 'shut':28 'travel':2 'turn':22 'use':5,24 'valv':17,23,30,38,44,61 'verifi':32 'within':49 'without':55

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