Normally the gas transfer pump ballast valve are arranged

Normally the gas transfer pump ballast valve are arranged, it can refer to the manual mechanical vacuum pump oil seal technology. This gas transfer pump is easy to return oil and fuel injection, in order to overcome these shortcomings, the manufacturer at the same time with the molecular sieve, oil mist collector, dust filtration and oil filter and other accessories.With the operation and the manual fuel transfer pump oil circulating gas transfer pump, in return for high vacuum end will re evaporated into steam. Will affect the Portable fuel pump performance, increase the gas transfer pump. Set the gas ballast valve can effectively prevent the condensation of condensable gases, namely the pump in the compression process, gas ballast valve through the gas hole of the permanent dry gas mixed with compressed gas, condensable gas partial pressure in the pump when the temperature reaches the saturation vapor pressure, pressure of compressed gas can reach exhaust pressure, exhaust valve is opened, the condensate and dry gas discharged simultaneously. The auxiliary exhaust valve to work, whereby part of the gas is discharged, and the remaining gas is electronic diesel fuel pump by a low level of vacuum. Gas transfer pump when the inlet pressure is reduced, the auxiliary exhaust valve displacement will be reduced, ultimately closed.