Liquid helium Dewars

Name: Liquid helium Dewars
Type: Both transportable and stationary units
Capacity: From 30 to 18,000 liters
Design Temperature: -269 °C
Design codes: TPED or PED
Insulation: Multi-layer super insulation under vacuum
Materials used: Stainless steel and/or aluminium
Piping arrangement: All stainless steel pipework and valves
The equipment Pressure build up vaporizer
include: Safety relief devices for the outer
  and inner vessel
  Complete plumbing arrangement
  for normal operations