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Valves manual in the production process. Production process used manual valve to control the system, Operator open and close or function the valve for controlled pressure or gas and oil flow rate.
Keywords:
fossil fuel
fuel and power generation
factory
machine valve
steel
industry
tube
metal
equipment
environment
business finance and industry
pipeline
refinery
technology
engineering
gasoline
oil industry
pipe
oil flow
process plant
plant process
production process
production function
production operator
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