Noshok
600 Series Block & Bleed, Hard Seat Needle Valves

Key Features

  • 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 Grafoil® 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
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SPECIFICATIONS
MaterialsZinc-nickel plated steel, electropolished
316 stainless steel
Connections1/4" & 1/2" NPT 
Male-female & Female-female configurations
Pressure ratings10,000 psi @ 200 °F
Orifice size0.187"
Flow coefficientCV 0.44
Steam seal & typeAll 316 stainless steel stems with FKM o-ring and PTFE back-up ring below the threads, PTFE or Grafoil®packing optional
OptionsPanel mountings, o-ring materials, handles, packings, regulating stem and stem tips

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