[ Metal latches used to lock valves and valve accessories in place; ] metal gas-lift mandrels

'accessori':9 'gas':14 'gas-lift':13 'latch':2 'lift':15 'lock':5 'mandrel':16 'metal':1,12 'place':11 'use':3 'valv':6,8

Kickover tools for use in installing and removing gas lift mandrels, flow regulators for commercial use, safety valves for flow shutoff in well construction tubing, valves for controlling gas or fluids, namely, gas-lift valves and dummy valves

'commerci':15 'construct':24 'control':28 'dummi':38 'flow':12,20 'fluid':31 'gas':9,29,34 'gas-lift':33 'instal':6 'kickov':1 'lift':10,35 'mandrel':11 'name':32 'regul':13 'remov':8 'safeti':17 'shutoff':21 'tool':2 'tube':25 'use':4,16 'valv':18,26,36,39 'well':23

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