Petrochemical equipment is often 24-hour continuous operation, when the work pressure pump should be made much lower than the rated pressure, and speed work should also be lower than the rated speed.
石油化工设备常常是24小时连续运转，这时泵的工作压力应该取得比额定压力低得多，且工作转速也应该低于额定转速。
The pump is rated pressure pump work for the highest allowable pressure, but their work is determined by external pressure load, pump life are directly related to their work pressure.
泵的额定压力是指泵连续工作时的最高许用压力，而其工作压力则决定于外部负载，泵的寿命与其工作压力直接相关。
For often work under high pressure gear pump, the working pressure shall be lower than the rated pressure of the pump 1 ~ 2 pressure level.
对于经常工作于较高压力下的齿轮泵，其工作压力应比泵的额定压力低1 ~2个压力级。
For not frequent work gear pump, the working pressure is desirable for the rated pressure of the pump, taking the quality into consideration, it is best to used pressure rated lower 20% ~ 30%.
对于不频繁工作的齿轮泵，其工作压力可取为泵的额定压力，考虑到产品质量不同，最好将额定压力降低20% ~ 30%使用。
For not frequent work gear pump, the working pressure is desirable for the rated pressure of the pump, taking the quality into consideration, it is best to used pressure rated lower 20% ~ 30%.
对于不频繁工作的齿轮泵，其工作压力可取为泵的额定压力，考虑到产品质量不同，最好将额定压力降低20% ~ 30%使用。
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