Regulating valve maintenance and general instrument maintenance is similar, can be divided into passive maintenance, preventive maintenance and predictive maintenance. Passive maintenance is a kind of maintenance method when the control valve and other equipment malfunction. Due to equipment failure to maintain, so often cause the production process to stop, even when serious equipment damage or casualties, etc.. Passive maintenance is the maintenance of the production process, preventive maintenance is based on past experience, according to the time to maintain a maintenance method.... 【Detailed】
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