A hand-held pneumatic safety wrench system comprising primarily a wrench with a clamping mechanism and a ratcheting mechanism that enables the user to safely tighten and loosen hammer unions and similar high-pressure temporarily flow line and pipe connections used in the oil, gas and utility industry

'clamp':15 'compris':9 'connect':42 'enabl':22 'flow':38 'gas':47 'hammer':30 'hand':3 'hand-held':2 'held':4 'high':35 'high-pressur':34 'industri':50 'line':39 'loosen':29 'mechan':16,20 'oil':46 'pipe':41 'pneumat':5 'pressur':36 'primarili':10 'ratchet':19 'safe':26 'safeti':6 'similar':33 'system':8 'temporarili':37 'tighten':27 'union':31 'use':43 'user':24 'util':49 'wrench':7,12

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