valves manual the production process used valve control system operator open and close |
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| navigate by keyword : blue close construction control controlled controller damage detail device dirty energy engineering flow fuel function generation ground hand handle industrial industry iron line manual metallic object open operation operator pipeline power pressure process production pump rate repair replace rust safe station steel stress supply system transfer transportation used valve valves water wheel |
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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. |
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