• 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 static pressure transmitters, switches or
gauges to be removed without disturbing the permanent piping installation
• Block valve is located on the right and the bleed valve is located on top in
a 90° orientation, venting is to the left
• 100% helium leak tested to 1 x 10-4 ml/s for performance and reliability
• Soft tip valves feature a patented Acetal non-rotating soft tip stem,
and a back-up metal-to-metal seal (U.S. Patent 6,820,857)
• 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 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
• Color coded vinyl dust caps for bonnets and stems (non-packing)
• Patented body-to-bonnet, metal-to-metal seal is designed to
significantly increase the pressure range of the valve