一、Features: 
1. Optimized hydraulic design was carried out for the over-flow components, so that the pump efficiency was 10% higher than that of the conventional vacuum pump within the suction absolute pressure range of 10-101.3kpa, and the energy-saving effect was remarkable.
2. When the flow parts are sprayed with macromolecular anticorrosive coating or are made of non-metallic materials, it can meet very harsh requirements for corrosion protection; At the same time, its smooth surface can effectively reduce the sediment of the gray matter and slow down the scaling process.
3. The exhaust port with flexible valve plate can automatically adjust the exhaust Angle, so that the pump can be operated with high efficiency under different suction conditions, avoiding the occurrence of over-compression or under-compression, thus reducing the vibration and noise of the pump.
4. When the pump body is with separator, a pump can suck different vacuum.
5. The pump body adopts flange bolt assembly structure
二、Model Description: 

Sample：2BE5 42 0―2BD3C
2BE5 --- Liquid ring vacuum pump series code
42 ----Nominal radius of impeller (cm)
0 ---- Pump body has no partition code. "0" no pump body divider; '6'no pump body separator.
2 ---- Minimum suction pressure is available 100mbar
B ---- Structural material code " B" is ordinary material;" B1" main flow parts spray polymer materials;" E" grey cast iron/nickel chromium stainless steel;" F" nickel chromium stainless steel.
D ---- Transmission code "D" direct transmission;" V" belt drive, "G" reducer drive.
3 ---- Seal form code: "3" is outer water supply packing seal;" 4" for internal water supply packing seal;" 2" is a single-face mechanical seal;" 5" double end mechanical seal.
C ---- Pump speed code (unit: r/min)

三、Spectrogram: 
四、Application field: 
Power industry: negative pressure transmission, condenser vacuum
Coal industry: gas drainage, vacuum dehydration
Petrochemical industry: gas pressure, vacuum system
Paper industry: vacuum dehydration
Iron and steel metallurgy: vacuum dewatering
Cigarette industry: cigarette machine negative pressure system, vacuum moisture-proof