Block & Bleed, Hard Seat Needle Valves-600 series

Block & bleed design allows pressure to be bled off without disturbing the permanent piping installation, allowing quick and easy removal or replacement of instruments
100% helium leak tested to 1 x 10-4 ml/s for guaranteed performance and reliability
10,000 psi pressure rating @ 200 ?F
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
All stems are 316 Stainless Steel
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)
0.090″ bleed hole located on the bottom is controlled by a 1/4″-20 UNF-2A bleed screw