Operating Principle and Attributes:
The series SYF roots vacuum pump is with overflow valve. The figure-of-eight rotors are counter-rotating at a constant pace within the pump housing for suction and exhaust of gas. Two rotors are supported by two bearings and synchronized by a gear, which ensures these two rotors in particular relative positions. They may be close to to each other and to the housing without having real contacting, so lubrication is unnecessary inside the functioning housing. The very carefully balanced operating elements and substantial precision bevel wheels ensue the pump be operated stably and constantly under the affliction of high-pressure variation. Dynamic seal aspect use our patent technologies and imported oil seals, the vibration volume of shaft to the shaft seals is controlled to significantly less than 0.02mm.
A gravity valve is put in involving the suction and exhaust part of the pump. The perform in the gravity valve is as follows, when the pressure variation in between the suction and exhaust part is in excess of the weight from the valve, the valve opens instantly, which can make the strain big difference usually preserve within a fixed controllable value, the worth will be the allowable highest stress difference to make sure the pump work ordinarily and to ensure actually, the roots vacuum pump with overflow valve is a sort of overload self-protective pump.
Series SYF roots vacuum pump with overflow valve has substantially greater pace at reasonably reduced inlet pressure and it is possessed 
overload self-protective function. Since it is often a pump of dry clearance seal construction, if a specific pumping pace charge and an ultimate vacuum have to be obtained, it can be important to provide a reduce inlet pressure for decreasing the back flow, consequently, a pump must be backed in use, roots vacuum pump need to be started quickly after its inlet strain reaches a permissible value for economization.
It’s permit to select diverse kinds of pump since the backing pump for factual needs, such as oil seal pump and liquid ring vacuum pump. When pumping the gas containing massive quantity of vapor, the liquid ring vacuum pump will be the best backing pump.
