一、Features: 
1, The pump integrated the advantages of existing corrosion resistant water ring vacuum pumps, according to the different degree of corrosion resistance of various flow parts during operation, follow the principle of equal longevity: Different raw materials and corresponding technological methods are used based on cast iron, cast steel or carbon steel, so that its acid resistance, alkali resistance, cavitation corrosion and other performance greatly improved, service life extension. The coating layer of its flow parts can work reliably under the vacuum level of 6KPa and the condition of water and air scour within the specified maintenance period. The maintenance period is 1-3 years according to the corrosion medium, temperature, pump speed and other working conditions. Compared with 316L stainless steel, the cost can be reduced more than 1 times under the same working condition and life.
2. Repeated maintenance of side cover. When the anti-corrosion coating aging failure, the basic parts of the pump did not suffer damage, it can be simple, economic and effective maintenance and can be repeatedly used. The parts of integral plastics can live for more than 3 years under the condition of very small amount of dust. There is no leakage on site due to the special packing seal.
3. It can be conveniently applied to all water ring vacuum pumps with flat type dispenser structure with low cost, long life and relatively simple manufacturing process. It is suitable for the extraction of corrosive gases containing trace solid dust in chemical industry, metallurgy, environmental protection, paper making, chemical fertilizer, pharmaceutical and other industries.
二、Model Description: 

Sample：2BE1-J 353
2BE1-J --- Corrosion resistant liquid ring vacuum pump series code
353 ---- Item NO. 

三、Spectrogram: 
四、Application field: 
Phosphate industry: vacuum reaction, filtration, concentration, wet discharge dry reactor
Nitrogen fertilizer, yellow phosphorus industry: vacuum pressure change adsorption
Chlor-alkali chemical industry: vacuum filtration, vacuum distillation, drying, compressed air regeneration
Polycrystalline silicon industry: raw material silicon powder filtration, white carbon black alkalis wash packaging
Dry process aluminum fluoride industry: negative pressure system