Operating Principle and Characteristics: The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a frequent velocity inside the pump housing for suction and exhaust of gasoline. Two rotors are supported by two bearings and synchronized by a gear, which ensures these two rotors in specified relative positions. They can be close to to each other and to the housing without having actual contacting, so lubrication is unnecessary inside the doing work housing. The thoroughly balanced operating elements and substantial precision bevel wheels ensue the pump be operated stably and constantly below the problem of high-pressure distinction. Dynamic seal component makes use of our patent technology and imported oil seals, the vibration volume of shaft about the shaft seals is controlled to less than 0.02mm. A gravity valve is set up in between the suction and exhaust part of the pump. The perform in the gravity valve is as follows, when the stress variation concerning the suction and exhaust element is above the fat in the valve, the valve opens instantly, which tends to make the strain difference constantly keep inside a fixed controllable value, the worth will be the allowable highest strain distinction to be sure the pump get the job done generally and to ensure actually, the roots vacuum pump with overflow valve is actually a variety of overload self-protective pump. Series SYF roots vacuum pump with overflow valve has considerably increased speed at fairly decrease inlet strain and it really is possessed overload self-protective perform. As it is a pump of dry clearance seal development, if a particular pumping pace price 15 and an ultimate vacuum have to be obtained, it’s essential to supply a decrease inlet pressure for decreasing the back movement, as a result, a pump has to be backed in use, roots vacuum pump ought to be started off soon just after its inlet strain reaches a permissible worth for economization. It’s allow to pick various types of pump since the backing pump for factual needs, such as oil seal pump and liquid ring vacuum pump. When pumping the gas containing big level of vapor, the liquid ring vacuum pump is definitely the ideal backing pump.