These high-integrity valves are recommended for gas handling systems where inboard diffusion of air or moisture must be kept to a minimum. These valves have multiple metal diaphragms which provide a permanent seal, capable of passing the helium leak test to 10^-8 ccs.

Specifications Maximum Operating Pressure 30 kg/cm2g at 700F Materials Body 316 stainless steel or brass Seat Kel-F Ambient Operating Temperature - 400F to + 2000F