Needle valve 8 series

manualpurgethreaded

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) Materials - Zinc-nickel plated steel, electropolished 316 stainless steel, 360 brass Connections - 1/4" & 1/2" NPT Hard seat pressure ratings* - Brass: 6,000 psi @ 200 °F Steel: 10,000 psi @ 200 °F Stainless Steel: 10,000 psi @ 200 °F