The Aegis® RSS series valves are specifically designed for flow control of corrosive, hazardous and ultra-pure process fluids and gasses. The RSS series is especially suitable for media where stainless steal and exotic alloys do not provide sufficient corrosion resistance, as an economic alternative to exotic alloy valves, for metal-reactive media, for biotechnology and high-purity media where excellent cleaning and anti-adhesive surfaces are important, and for highly permeating media.