Helium Reliquefiers

The Cryomech Helium Reliquefiers are designed to recondense the boil-off from liquid helium dewar/cryostats, and then return the liquid helium to the dewar/cryostat establishing a closed helium loop. It can be installed into dewars already full of liquid helium or be utilized to liquefy helium gas from a gas cylinder to fill a Dewar.

All Cryomech Helium Reliquefiers Include the Following:

  • Warranty of three years or 12,000 hours on parts and materials
  • Pressure relief and safety valves
  • Temperature monitoring
    • Silicone diode temperature sensor
    • Heater
    • Controllers
  • Liquid helium return line connection
    • Standard: 1/2″ (12.7 MM) or 3/8″ MM OD 22-30″ long
    • Custom configurations available upon request

Available Options

  • The Dual LHe/LN2 Reliquefier simultaneously recondenses helium and nitrogen in two separate closed loops
    • This product is designed for customers with LN2-jacketed liquid helium Dewars. By installing Dual Reliquefiers into their Dewars, customers can eliminate the need to refill the liquid helium and liquid nitrogen in their Cryostats
  • Ultra-low vibration reliquefier for operation with NMR/MEG
    • Designed with your most vibration-sensitive applications in mind, the HeRL can be modified to include a remote motor and flexible drainage leg
  • Operation with pumping recovery systems to maximize the recovery from 1K sample space
  • Additional fill ports available to allow users to top off their bath without removing the HeRL from the cryostat

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Quick Facts about Cryomech Helium Reliquefiers

  • Powered by a Cryomech Pulse Tube Cryocooler, designed with high reliability with long mean times between maintenance
  • In operation all over the world
  • Shipped assembled for ease of installation by on-site technician
  • Operate 24 hours a day, 7 days a week reliably, automatically and safely
  • Customized design for each application


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Helium Reliquefiers offered by Cryomech
PT410 Helium Reliquefier
  • Liquefy (from room temperature gas) ≥10 liters/day
  • Reliquefication and recondensing rate (from helium cryostat) ≥ 18 liters/day
  • PT410 Cryorefrigerator
PT415 Helium Reliquefier
  • Liquefy (from room temperature gas) ≥ 15 liters/day
  • Reliquefaction and recondensing rate (from heium cryostat) ≥ 27 liters/day
  • PT415 Cryorefrigerator
HeRL45 Helium Reliquefier
  • Liquefy (from room temperature gas) ≥ 45 liters/day
  • Reliquefaction and recondensing rate (from helium cryostat) ≥ 80 liters/day
  • PT415 (3) Cryorefrigerators