Cryogenic Valve Model C2121-M21

Features

• Low Handle Torque for Bubble-tight Shutoff
• Stainless Steel Stem and Threads
• Redundant Stem Seal
• Cryogenic Stem Packing
• Brass Bonnet
• Redundant Cryogenic Bonnet Seals
• Bonnet Purge Port (Thermal Relief Location)
• All Stainless Steel Body
• Close Tolerance Stem
• MLI on Jacketed Valves
• Brass Plug
• Plug To Stem Stabilizer
• KEL-F Seat Seal
• Contoured Flow Plugs Available

Technical Data

• 300 PSG MAWP (Maximum Operating Pressure)
  450 PSIG Proof
• Seat Seal Bubble Tight @ 150 PSIG
• Packing Mass Spec Tested @1×10^-5 Torr
• Vacuum Leak Rate Below 1×10^-9 CC GHe/SEC
• Heat Leak: 27.3 BTU/HR To 20° k
• Cooldown Mass: 10.5 Pounds
• Options:
  • Cold Box Jacket
  • Pneumatic Actuators
  • Purge Ports
  • Flow Plugs

Applications

• Vacuum Jacketed Piping
• Cold Boxes
• Manifold and Tank Systems
• Liquid Nitrogen, Helium, Hydrogen, Argon, and Oxygen Service (With Proper Cleaning)