The pneumatic diaphragm shutoff valve series is specially designed for ultra high purity applications where sub ppb detection and trace analysis are required. This pneumatic shut off valve can be mounted upfront the analytical devices/sensors or used for isolation/bypass lines mounted with purifiers/traps. They are also perfect to mount on the pressure regulators outlets and the sampling systems. Having a pneumatic actuation which interacts on a diaphragm sealing makes it ideal for quick and precise shutoff without dead volume or leakage for remote applications. Ideal for stream selector systems to be controlled remotely. The body is made of Stainless Steel 316L welded, and connections are face seal ¼ type to ensure the purity level. The valve can be configured with normally open or normally close position.