Liquid Helium Valve Model C3081-M21
1.0" LHe Vacuum Jacketed Globe Valve, Manual Operation
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
- 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