Operating Principle and Features:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a frequent speed inside 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 specific relative positions. They are near to each other and also to the housing without real contacting, so lubrication is needless in the functioning housing. The carefully balanced working elements and higher precision bevel wheels ensue the pump be operated stably and continuously under the ailment of high-pressure distinction. Dynamic seal component use our patent engineering and imported oil seals, the vibration amount of shaft about the shaft seals is managed to much less than 0.02mm.
A gravity valve is put in concerning the suction and exhaust part of the pump. The perform on the gravity valve is as follows, once the strain variation among the suction and exhaust portion is over the excess weight of your valve, the valve opens instantly, which helps make the pressure distinction often maintain inside a fixed controllable value, the worth is the allowable highest strain variation to guarantee the pump function usually and to ensure that actually, the roots vacuum pump with overflow valve is often a form of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has considerably larger speed at fairly reduced inlet pressure and it’s possessed overload self-protective perform. As it is a pump of dry clearance seal building, if a certain pumping velocity price and an greatest vacuum should be obtained, it really is necessary to supply a lower inlet pressure for minimizing the back flow, as a result, a pump should be backed in use, roots vacuum pump must be commenced quickly right after its inlet strain reaches a permissible worth for economization.
It truly is allow to select distinct varieties of pump because the backing pump for factual prerequisites, such as oil 
seal pump and liquid ring vacuum pump. When pumping the gas containing substantial volume of vapor, the liquid ring vacuum pump may be the great backing pump.
