Liquid Helium Valve Model C3081-M21

1" LHe Valve with Globe Style Body, Full Jacket & Manual Operation

liquid helium valve
 
Product Sheet

Features

  • Low Handle Torque for Bubble Tight Shutoff
  • Redundant Stem Seal
  • Cryogenic Stem Packing
  • Brass Bonnet
  • Redundant Cryogenic Bonnet Seal
  • Bonnet Purge Port (Thermal Relief Location)
  • Stainless Steel Body and Stem
  • Full Jacket (Cold Box Cuff Available)
  • MLI on Jacketed Valves
  • Low Thermal Conductivity Stem and Support Tube
  • Brass Plug
  • Plug To Stem Stabilizer
  • KEL-F Seat Seal w/ Locked Thread Insert
  • Contoured Flow Plug Available

Technical Data

  • 300 PSIG MAWP
  • 450 PSIG Proof
  • Seat Seal Bubble Tight @ 150 PSIG
  • Packing Mass Spec Tested @ 1x10 -5 TORR
  • Leak Rate Below 1x10-8 CC GHe/SEC
  • Seat Seal Helium Bubble Tight Tested @ 150 PSIG@ Ambient Temperature
  • Heat Leak: 6.25 BTU/HR (1.8 WATTS)
  • Cooldown Mass: 3.25 Pounds
  • Options:
    • Bonnet Purge Port
    • Full Lower Jacket
    • Pneumatic Actuator
  • Flow Plugs

Applications

  • Vacuum Jacketed Piping
  • Cold Boxes
  • Helium Transfer Lines
  • Helium Liquefiers