• 100% helium leak tested to 1 x 10-4 ml/s for performance and reliability

• Replaceable Acetal seat and straight through porting for bidirectional, high

capacity flow and easy roddable cleaning

• 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 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)