Working Principle and Features:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a consistent velocity inside the pump housing for suction and exhaust of gas. Two rotors are supported by two bearings and synchronized by a gear, which assures these two rotors in certain relative positions. They may be close to to one another and also to the housing without having actual contacting, so lubrication is needless from the functioning housing. The very carefully balanced working elements and higher precision bevel wheels ensue the pump be operated stably and constantly under the situation of high-pressure difference. Dynamic seal element use our patent engineering and imported oil seals, the vibration volume of shaft around the shaft seals is controlled to much less than 0.02mm.
A gravity valve is set up amongst the suction and exhaust part of the pump. The function with the gravity valve is as follows, when the stress distinction in between the suction and exhaust aspect is in excess of the fat of your valve, the valve opens automatically, which can make the stress variation often hold within a fixed controllable worth, the worth is the allowable highest strain distinction to be sure the pump perform usually and to ensure in actual fact, the roots vacuum pump with overflow 
valve is really a form of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has considerably higher pace at somewhat lower inlet strain and it truly is possessed overload self-protective function. Since it is actually a pump of dry clearance seal development, if a particular pumping velocity charge and an greatest vacuum have to be obtained, it can be necessary to provide a lower inlet pressure for minimizing the back flow, for that reason, a pump has to be backed in use, roots vacuum pump ought to be commenced quickly after its inlet stress reaches a permissible value for economization.
It really is allow to pick distinct sorts of pump as the backing pump for factual needs, this kind of as oil seal pump and liquid ring vacuum pump. When pumping the fuel containing massive amount of vapor, the liquid ring vacuum pump will be the perfect backing pump.
