Hard Seat & Soft Tip Needle Bleed Valves-800 and 850 series

Bleed valves provide a convenient means to relieve process pressures trapped between a shut off valve and the instrument
Uses the same bonnet assemblies of the 100/150 Series mini valves with an integrated single threaded body for insertion in vent port
Soft tip valves feature a patented Delrin? non-rotating soft tip stem, and a back-up metal-to-metal seal (U.S. Patent 6,820,857)
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
Available in Zinc-nickel plated Steel, electropolished Stainless Steel, and Brass
FKM o-ring seal and PTFE back-up ring below the stem threads to protect from corrosion and galling; PTFE or Graphite (800 Series only) packing optional
All stems are 316 Stainless Steel
All stem threads are rolled for strength and ease of operation
0.159″ bleed port
Patented body-to-bonnet, metal-to-metal seal is designed to significantly increase the pressure range of the valve (U.S. Patent 7,758,014)