Nikkiso Clean Energy & Industrial Gases Group

Products & Services

Cryogenic Pumps

Submerged Pump
Suction Vessel Mounted

This pump and suction vessel is an integral part of the piping system and includes external suction and discharge connections. Mounted to the top or headplate of the vessel this ensures that the pump, motor and fluid product are totally contained within the pressure vessel. As a result, shaft seals are eliminated. The pump inlet is below the suction vessel inlet. So this allows the source tank liquid levels to be lowered to a minimum.

Features & Benefits

  • Pump and suction vessel are integral part of the piping system
  • External suction and discharge connections
  • Mounted to top of head plate
  • Pump, motor and fluid are totally contained
  • Shaft seals are eliminated
  • Source tank liquid levels can be lowered
  • Feed through, junction box
  • Vibration monitoring system


  • Clean Energy
    • Marine (LNG)
    • Hydrogen
    • Fracking
  • Industrial Gases
    • Storage Filling & Transfer

Liquids Pumped

  • LEG
  • LN2
  • LNG
  • LPG
  • Liquid Propylene
  • Other


Flow Rate Max.1000³/h (4400 gpm)
Head max.600m (1,970 ft)
Fluid Temperature
-130℃ to +450℃ (-201 to 842°F)
Viscosity Max.500mPa·s
Design Pressure:20MPa (2900 psig)
Casing Material

Austenitic Stainless steel (304SS, 316SS, etc.)
Hastelloy*1 C/B Equivalent Alloy
Monel*2, others Equivalent Alloy

Motor power range0.75 to 250kW
Ex-ProtectionVarious international explosion-protection (ATEX,IEC,CSA,TRCU, etc.) CE marking