Summary:

　　2BV series water ring vacuum pumps are suitable for pumping the gases and steam. Its suction pressure can reach 33mbar (abs) (i.e. 97 % vacuum degree). When the liquid ring vacuum pumps work under the condition near the limited vacuum for a long time, it is necessary to couple with the cavitation protection pipe in order to get rid of the screaming and protect the pump. If used as a compressor, its pressure is up to 0.26MPa (absolute pressure). 2BV series water ring vacuum pumps and compressors will replace the SK and 2SK series water ring pumps and the W, WY, WL series reciprocated vacuum pumps completely with their superior performance and advantages.

　　2BV2-Ex, 2BV6 series water ring vacuum pumps and compressors are mainly used for pumping the explosive gases or work in the flammable and explosive environment. The technical parameter of each type is the same as the corresponding type of the 2BV2 or 2BV5 series products.

　　2BV series stainless steel pumps can be used under the conditions with higher requirements for the corrosive-proof or the lustration.
　　According to the working situation, the material of all the parts where the liquid flows (i.e. pump casing, pump cover, port plate and impeller) are made of various stainless steel as bellow：The impeller,disc,Pump cover,Pump bodyMaterial can be used
　　SUS304（0Cr18Ni9)
　　SUS316（0Cr17Ni12Mo2）
　　SUS316L（00Cr17Ni14Mo2）
    The material of the shaft is 2Cr13 or 0Cr18Ni12Mo2Ti
　　The mechanical seals are used the John Crane products and the seals material is optional for FPM or PTFE.