Working Principle and Functions: The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a constant speed within the pump housing for suction and exhaust of fuel. Two rotors are supported by two bearings and synchronized by a gear, which ensures these two rotors in particular relative positions. They are close to to each other and also to the housing with no real contacting, so lubrication is pointless while in the functioning housing. The carefully balanced working components and substantial precision bevel wheels ensue the pump be operated stably and constantly beneath the issue of high-pressure variation. Dynamic seal element uses our patent technology and imported oil seals, the vibration volume of shaft about the shaft seals is managed to significantly less than 0.02mm. A gravity valve is set up involving the suction and exhaust part of the pump. The perform with the gravity valve is as follows, when the stress variation between the suction and exhaust component is in excess of the excess weight of your valve, the valve opens immediately, which helps make the strain big difference constantly hold in the fixed controllable worth, the value is definitely the allowable highest pressure distinction to make sure the pump perform commonly and to ensure actually, the roots vacuum pump with overflow valve is really a sort of overload self-protective pump. Series SYF roots vacuum pump with overflow valve has considerably greater speed at comparatively decrease inlet pressure and it really is possessed overload self-protective perform. Since it is a pump of dry clearance seal development, if a specific pumping velocity rate 15 and an greatest vacuum must be obtained, it can be essential to provide a reduced inlet strain for cutting down the back movement, thus, a pump should be backed in use, roots vacuum pump need to be started out soon after its inlet strain reaches a permissible value for economization. It is allow to select distinct kinds of pump as the backing pump for factual necessities, this kind of as oil seal pump and liquid ring vacuum pump. When pumping the gas containing huge level of vapor, the liquid ring vacuum pump is definitely the excellent backing pump.