3-Valve Double Block & Bleed, Hard Seat Needle Valves-3070 series

Combines isolating and venting in a single valve, eliminating the need for tubing and fittings
Block valve isolates the downstream process fluids, and the bleed valve exhausts upstream fluids enabling instruments to be removed without disturbing the permanent piping installation on the bottom
The 1/4″ NPT vent plug is located 90? to the left and may be removed and replaced with exhaust piping to direct the fluids to a safe location
100% helium leak tested to 1 x 10-4 ml/s for guaranteed performance and reliability
10,000 psi hard seat 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)