Products Address: http://www.gdnashvacuum.com/product/showproduct.php?lang=cn&id=114 water ring vacuum pump (referred to as water ring pumps for short) is a rough vacuum pumps, which can be used for single-stage pump 4 ? 8kPa of extreme pressure, and 2? 4kPa for the two-stage pump 4? 8kPa's. In the water ring pumps, auxiliary exhaust valve is a special structure, and usually, it is a rubber ball. This is used for the operation of the pump to eliminate over-compression and compression inadequate. These two phenomena can cause excessive power consumption. The water ring pump is not a direct exhaust valve and the exhaust pressure is always fixed, the compression ratio of the water ring pump from the intake port but in the stop position and the initial position of the air outlet, two positions are identified fixed; 2SK two water ring vacuum pump and therefore, it can not meet the changing needs of the suction pressure. To solve this problem, in general, will be equipped with a ball valve at the bottom of the rubber exhaust port, so that when the pressure in the pump chamber before the time reaches the exhaust gas pressure, the ball valve is automatically opened, the gas is discharged to eliminate the phenomenon of over-compression. In general, the water ring pump design, the compression ratio is always based on the minimum suction pressure to determine the initial position of the air outlet is determined. As a result, the compression shortage. 2SK water ring vacuum pumps are widely used in chemical industry, machinery, light industry, medicine, food, textile and other industries for pumping air or other gases, insoluble in water, solid particles, non-corrosive to form a sealed system so there is a certain vacuum. It is usually in a vacuum evaporation, vacuum concentration, vacuum drying, vacuum filtration, vacuum feed and other processes. The pump has a compact and reliable, easy to install and remove, easy to maintain.