The product
The Cryogenic Cylinder Filling Pump RPSA, by Nikkiso ACD, serves carbon dioxide and nitrous oxide cylinder filling. In its standard models, it reaches flow rates of up to 5.1 gpm (19.4 lpm). In addition, it operates with a maximum discharge pressure of 1,740 psi (120 bar).
How the Cryogenic Cylinder Filling Pump RPSA works
An electric motor powers the RPSA through a heavy duty, grease-lubricated drive assembly. As a result, the drive offers longer life and less maintenance. Regreasing is also not necessary.
Pump packing is adjusted through a large access port. This way, adjustments are easy and packing life is extended.
Applications
- Carbon dioxide cylinder filling
- Nitrous oxide cylinder filling
Liquids pumped: carbon dioxide (CO2) and nitrous oxide (N2O).
Features and Benefits
- Tungsten carbide coated piston helps increase the life of the seals
- Simple cold end design assembly for easy maintenance
Typical Scope of Supply
- Cold end, grease-lubricated drive assembly and electric motor
- Galvanized steel base plate with belt guard
- Surge chamber and relief valve
Nitrous Oxide Service
Liquid nitrous oxide is a potentially dangerous fluid and must be handled with extreme care. See Compressed Gas Association standard CGA G-8.3-2016 for further information.
Under certain combinations of temperature and pressure, nitrous oxide can explosively decompose with serious consequences. In addition, nitrous oxide is an oxidizer that actively supports combustion. For this reason, nitrous oxide handling equipment must be cleaned for oxygen service.
Design and construction of storage and piping systems for pumping liquid nitrous oxide must assure material compatibility and prevent loss of prime or dry running of pumps. Nitrous oxide is also an active solvent for many materials, so material compatibility must be confirmed before use. For additional historical information on hazards associated with nitrous oxide decomposition, refer to Chemical Safety Board report number 2016-04-I-FL, dated February 2017.
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