ROUND OR RECTANGULAR BUTTERFLY VALVES FOR INSTALLATION IN CONDUITS TO CONTROL THE FLOW OF GASES OR LIQUIDS THEREIN, HAVING PNEUMATIC OR HYDRAULIC OPERATOR MECHANISMS FOR ROTATING THE VALVE DISCS BETWEEN THE OPEN AND CLOSED POSITIONS

'butterfli':4 'close':34 'conduit':9 'control':11 'disc':29 'flow':13 'gase':15 'hydraul':22 'instal':7 'liquid':17 'mechan':24 'open':32 'oper':23 'pneumat':20 'posit':35 'rectangular':3 'rotat':26 'round':1 'therein':18 'valv':5,28

ROUND OR RECTANGULAR BUTTERFLY VALVES FOR INSTALLATION IN CONDUITS TO CONTROL THE FLOW OF GASES OR LIQUIDS THEREIN, HAVING MANUAL OPERATOR MECHANISMS FOR ROTATING THE VALVE DISCS BETWEEN THE OPEN AND CLOSED POSITIONS

'butterfli':4 'close':32 'conduit':9 'control':11 'disc':27 'flow':13 'gase':15 'instal':7 'liquid':17 'manual':20 'mechan':22 'open':30 'oper':21 'posit':33 'rectangular':3 'rotat':24 'round':1 'therein':18 'valv':5,26

ROUND OR RECTANGULAR BUTTERFLY VALVES FOR INSTALLATION IN CONDUITS TO CONTROL THE FLOW OF GASES OR LIQUIDS THEREIN, HAVING ELECTRIC OPERATOR MECHANISMS FOR ROTATING THE VALVE DISCS BETWEEN THE OPEN AND CLOSED POSITIONS

'butterfli':4 'close':32 'conduit':9 'control':11 'disc':27 'electr':20 'flow':13 'gase':15 'instal':7 'liquid':17 'mechan':22 'open':30 'oper':21 'posit':33 'rectangular':3 'rotat':24 'round':1 'therein':18 'valv':5,26

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