Mini Valve, Hard Seat, 1/4 NPT Male - 1/4 NPT Female, 316 SS, 0.172" Orifice, Silicone Free, Noshok, Mfr#: 102-MFS-SF

Compact size valve built for maximum durability and robust performance in the toughest applications. 100% helium leak tested to 1 x 10-4 ml/s for guaranteed performance and reliability. FKM o-ring seal and PTFE back-up ring below the stem threads to protect from corrosion and galling; PTFE or Graphite packing optional.