**NEW**  PAHL (Portable Automated Helium Liquefier)


Complete Liquid Helium
System Features:

•Liquid helium production rate of >22 liters/day *

•Two stage Sumitomo SHI model SRDK-415D
GM (1.5W@4K) closed cycle refrigerator
coldhead (Gifford-McMahon)

•Water or Air Cooled Compressor(s) available

•Temperature sensors installed on refrigerator
first and second stage(s)

* Liquefaction rate will vary dependent upon
pressure and purity

Custom Built Liquid Helium Storage Dewar:

•Storage dewar custom built to match refrigerator
and actively cool the dewar shields

•Approximate 200 Liter Helium Reservoir

•Demountable valve evacuation port

•High efficiency transfer using separate
pressurization port

•Safety pressure reliefs, Electrical feedthroughs,
Gas Vent valve, compound pressure gauge


CRYO Exclusive Two Piece

Liquid Helium Bayonet

Transfer Line

•Design allows female bayonet transfer 
line to remain in dewar without creating 
acoustic oscillations

•Special female Liquid Helium

bayonet with open/close vent

feature installed in 
liquid helium storage dewar

•Mating Liquid Helium bayonet

vacuum insulated transfer line

with 60” stainless steel flex

•Allows operation in low ceiling

height, as bayonet is inserted



Liquid Helium Level Monitor and Probe

•Installed superconducting LHe level probe

•Digital readout monitor

•Sample-and-hold feature

•RS-232 computer interface

•Fully Automated Touch Panel Control

Temperature Monitor

•Two multipurpose input channels

•LED display

•Remote interfaces include Ethernet, RS-232

Direct Recovery System

•Pressure regulator

•Scroll pump

•Flow controller

•System fully assembled and tested

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