Automatic shut-down devices for fluid and gas flow in conduits, namely, electronic, pneumatic or hydraulic control valves for controlling gas or fluids; mechanical devices used to close tubular members positioned subsurface and above surface, namely, automatic valves; emergency shut down device for pipelines, industrial facilities, power plants and oil and gas installations, namely, pump control valves

'automat':1,38 'close':29 'conduit':12 'control':18,21,57 'devic':5,26,43 'electron':14 'emerg':40 'facil':47 'flow':10 'fluid':7,24 'gas':9,22,53 'hydraul':17 'industri':46 'instal':54 'mechan':25 'member':31 'name':13,37,55 'oil':51 'pipelin':45 'plant':49 'pneumat':15 'posit':32 'power':48 'pump':56 'shut':3,41 'shut-down':2 'subsurfac':33 'surfac':36 'tubular':30 'use':27 'valv':19,39,58

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