Because not fully preheated, will pump in around uneven thermal expansion, so that static seal fuel transfer hand pump leakage points. Such as export, import flanges, pump large cap flange, balance pipe leak, fire or even cause serious accidents, explosions and so on. Heat pumps should pay attention to what Preheat: Preheat the process to correct. The general process is: the petrol dispenser pump outlet pipe entrance across the line pump pre hotline pump inlet. Preheat valve can not open too large to prevent the pump reverse. Preheat the pump speed is not too fast in general, should be less than 50 ℃ / h. Under special circumstances by the portable fuel transfer pump steam, hot water and other measures to speed up the warm-up speed. When the warm-up of 30 to 40 minutes should drive the car 180 °, in order to avoid uneven heating and bending the shaft up and down every.
Gas transmission pump is a gas can be inhaled and discharged continuously, so as to achieve the purpose of the vacuum pump exhaust. Gear pump is a rotary pump on the pump cylinder and the gear between the formation of the work of the volume change and move the transmission so that pressurized liquid or. Hydraulic piston pump or solid pump, driven by hydraulic power pack of hydraulic cylinder, hydraulic cylinder to promote the transport cylinder, conveying cylinder material output to pipeline.
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