NASH Liquid Ring Vacuum Pumps are the reliable and durable solution for demanding process applications. The NASH pump design was the first-of-its-kind when it was launched in 1905, and has been an industry leader ever since. Our ongoing commitment innovation is supported by product research and development; allowing us to continue to introduce quality liquid ring pumps and product upgrades that meet the rigors of the most demanding applications, while reducing the total cost of ownership. Need performance plus proven reliability? You need Nash.