Recently Sherman Engineering was contacted by Macy’s on Herald Square in New York. The call was regarding an ancient Nash Vacuum Pump. Upon inspection of the pump by Sherman Engineering experts, it was determined that this pump model was originally introduced in the 1930s. This particular unit had been in service for over 80 years! Sherman Engineering’s knowledgeable engineers were able to replace it with another reliable Nash Vacuum Pump. This is a true testament that regular maintenance on your Nash Vacuum Pumps will keep them running for years!