• 100% helium leak tested to 1 x 10-4 ml/s for 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 Grafoil® packing optional (certain NPT sizes only).
  • All stem threads are rolled for strength and ease of operation.
    One-piece bonnet with a metal-to-metal seal to the valve body below the bonnet threads.
  • Slotted spring pin to prevent accidental loosening.
  • Vinyl dust cap for bonnet and stem (non-packing).


Needle Valve – Datasheet.