Component design feature of a plug valve plug, namely, a groove and through passages which allow for connection to a grease fitting, used to allow through plug greasing in control valves used for regulating the flow of gases and liquids, regardless of whether the valve is in open or closed position

'allow':16,25 'close':50 'compon':1 'connect':18 'control':30 'design':2 'featur':3 'fit':22 'flow':36 'gase':38 'greas':21,28 'groov':11 'liquid':40 'name':9 'open':48 'passag':14 'plug':6,8,27 'posit':51 'regardless':41 'regul':34 'use':23,32 'valv':7,31,45 'whether':43

GREASEAL

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