GD Nash has introduced the 2BE4 series vacuum pumps and compressors – the result of a recent effort to redesign and upgrade the existing 2BE3 series. The NASH 2BE4 series of vacuum pumps and compressors have optimized inlet and discharge porting, as well as cylindrical roller bearings. They also have optional lobe purge piping to remove entrained solids and prevent erosion. Inlet bypass piping is not required in most installations. They are available in cast iron and stainless steel construction.