Cryofab

Liquid Helium Valve Model C3041-A21

Liquid Helium Valve Model C3041-A21

.5" LHe Vacuum Jacketed Globe Valve, Pneumatic Actuated Operation

Features

• Pneumatic Actuation Fail Closed
• Redundant Stem Seal
• Cryogenic Stem Packing
• Brass Bonnet
• Redundant Cryogenic Bonnet Seal
• Bonnet Purge Port (Thermal Relief Location)
• All Stainless-Steel Body & Stem
• Cold Box Cuff (Full Jacket Available)
• MLI On Jacketed Valves
• Low Thermal Conductivity Stem & Support Tube
• Brass Plug
• Plug To Stem Stabilizer
• Kel-F Seat Seal w/Locked Thread
• Contoured Flow Plugs Available

Technical Data

• 150 PSIG MAWP
  225 PSIG Proof
• Seat Seal Bubble Tight @150 PSIG
• Packing Mass Spec Tested @ 1x10^-5
• Leak Rate Below 1 x10^-8 CC GHe/SEC.
• Heat Leak: 3.5 BTU/HR.(1 Watt)
• Cooldown Mass: 0.75 Pounds.

Applications

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