Nikkiso Clean Energy & Industrial Gases Group

Products & Services

Cryogenic Pumps

Reciprocating Pump
P2K

The P2K model is a vertical pump design which eliminates gravitational loading on the cold end piston, extending sealing ring life and providing smooth suction valve operation for ideal NPSPR characteristics. Vertical installation offers less vibration, reduced noise, and a compact system footprint. The vertical cold end is submerged inside a vacuum-jacketed sump, minimizing heat leak and increasing system efficiency (particularly in poor suction conditions). The sump is secured to the intermediate with a v-band clamp, allowing quick and easy access to the cold end assembly for maintenance.

Features & Benefits

  • Vertical pump design eliminates gravitational loading on the piston, extending sealing ring life and providing smoother suction valve operation
  • Vertical installation off ers less vibration, reduced noise, and a compact system footprint
  • V-band clamp secures the sump to the intermediate, allowing quick and easy access to the cold end assembly
  • External re-lubrication nipples for roller bearings and crosshead provide extended service life
  • Replaceable crosshead wearband eliminates crosshead piston wear and reduces maintenance costs
  • Packing rings at top of pushrod are retained in cartridges for easy replacement (no removal of sump and cold end required)
  • Motor positioned on the backside of the pumping skid eliminates possible fi re, explosion, or hazard in the event of a liquid oxygen leak
  • Vertical cold end is submerged inside a vacuum-jacketed liquid sump, minimizing heat leak and increasing system effi ciency (particularly in poor suction conditions)
  • Pump assembly and spare parts are interchangeable with the PD3000 pump
  • Easy cold end maintenance by swiveling the pump and drive end 45°

Applications

  • Heavy duty cylinder filling
  • Medium duty storage filling
  • Unattended, automatic storage filling
  • Test Facility Support

Liquids Pumped

  • Nitrogen
  • Oxygen
  • Argon
  • Carbon Dioxide
  • Ethylene
  • Methane (LNG)

P2K Table

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

Austenitic Stainless steel (304SS, 316SS, etc.)
Alloy20
Hastelloy*1 C/B Equivalent Alloy
Titanium
Zirconium
Monel*2, others Equivalent Alloy

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

Typical Scope of Supply

  • Flow rates from 1.13 GPM to 5.53 GPM (4.27 lpm to 20.93 lpm)
  • Discharge pressures up to 6000 psig (414 barg)
  • NPSPR of 2 psi or lower
  • Intended for heavy duty cycles in cylinder filling applications and moderate duty cycles in storage filling applications

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