Working Principle and Capabilities:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a consistent speed 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 are close to to each other and to the housing without the need of real contacting, so lubrication is needless in the working housing. The very carefully balanced operating components and large precision bevel wheels ensue the pump be operated stably and continuously beneath the ailment of high-pressure difference. Dynamic seal element use our patent technologies and imported oil seals, the vibration level of shaft on the shaft seals is managed to less than 0.02mm.
A gravity valve is set up in between the suction and exhaust part of the pump. The perform of your gravity valve is as follows, once the pressure difference in between the suction and exhaust part is over the fat with the valve, the valve opens instantly, which helps 
make the pressure variation always keep in a fixed controllable value, the worth is the allowable highest strain distinction to make sure the pump work typically and to ensure that in fact, the roots vacuum pump with overflow valve is actually a sort of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has substantially higher velocity at somewhat lower inlet strain and it is actually possessed overload self-protective function. As it is really a pump of dry clearance seal development, if a specific pumping pace rate and an ultimate vacuum need to be obtained, it really is essential to provide a lower inlet strain for cutting down the back movement, hence, a pump must be backed in use, roots vacuum pump ought to be started off quickly just after its inlet pressure reaches a permissible value for economization.
It truly is allow to select diverse kinds of pump since the backing pump for factual necessities, such as oil seal pump and liquid ring vacuum pump. When pumping the gasoline containing huge quantity of vapor, the liquid ring vacuum pump would be the perfect backing pump.
