406-FFC

features

• 100% helium leak tested to 1 x 10^-4 ml/s for guaranteed performance and reliability
• Blow-out proof stem provides a secondary stem seal in the full open position
• FKM o-ring seal and PTFE back-up ring below the stem threads to protect from corrosion and galling
• PTFE or Graphite packing optional (certain NPT sizes only)