GD Nash”s 2BE4 Series vacuum pumps and compressors are designed to provide long life and reliable operation, with optimized inlet and discharge porting as compared to previous 2BE3 versions. The pumps and compressors feature cylindrical roller bearings for improved load ratings and increased reliability (bearing upgrade is possible in existing 2BE3s). Optional lobe purge piping to remove entrained solids and prevent erosion. Inlet bypass piping not required in most installations. Available in cast iron and stainless steel construction. Drop-in replacement for existing 2BE3 installations.