Take an industry standard diaphragm valve body, offer it in high purity materials, then add the revolutionary programmable “top-down” control flexibility and one has the Burkert, of Irvine, Calif., TOP Control Type 2031 high purity valve system for ultra-pure and sanitary fluids. Offering the industry’s only true proportional control solution for a diaphragm valve that delivers accurate control, it’s suited for pharmaceutical, food and beverage, biotechnology, cosmetics, semiconductor and other “high purity” applications.