Our Range of Cryogenic Reciprocating Pump Solutions
Reciprocating Cylinder Filling Pumps — For Oxygen, Nitrogen & Argon Service
High-Pressure Precision. Zero Compromise on Safety.
Our heavy-duty cryogenic reciprocating pumps for argon, nitrogen, and oxygen services are made to move extremely low-temperature liquids at the high discharge pressures needed for cylinder filling applications. These pumps are produced in compliance with international quality and safety requirements and are designed by a group of technical and industrial specialists.
| Type | Reciprocating Cylinder Filling Pumps |
| Liquids Handled | Liquid Oxygen (LOX), Liquid Nitrogen (LN₂), Liquid Argon (LAr) |
| Capacity | 200 to 1,500 Nm³ per hour |
| Pressure Range | 35 to 300 bar — high pressure applications |
| Application | Cylinder filling stations, de-bulking stations, on-site liquid supply |
Key Features:
- Vacuum jacketed cold end — minimizes product waste and heat infiltration
- "Dry" lubricated grease-packed bearings — for a longer lifespan and less maintenance
- Split drive and housing design — allows for simple maintenance access without requiring complete disassembly
- Extended stem vacuum port with positive seal — guarantees enhanced vacuum integrity throughout operation
- Intermediate purge connection — permits longer packing life and less downtime
- Positive locking drive coupling — created to increase operational safety
CO₂ & Nitrous Oxide Cylinder Filling Pumps
Handling the Toughest Gases with Rugged, Reliable Design.
Our cryogenic reciprocating pumps provide the robustness and efficiency needed for carbon dioxide and nitrous oxide services in food, beverage, and pharmaceutical-grade applications. To provide safe, effective cylinder filling at large throughput volumes, cryogenic fluid pressure is carefully controlled.
| Type | Reciprocating Cylinder Filling Pumps |
| Liquids Handled | Liquid Carbon Dioxide (LCO₂), Nitrous Oxide (N₂O) |
| Capacity | 150 kg to 1,000 kg/hr |
| Application | Cylinder filling stations — food, beverage, pharmaceutical, industrial |
Key Features:
- Tungsten carbide coated plunger — designed to endure harsh industrial conditions
- Rugged, heavy-duty construction — guarantees consistent priming even when the suction head is low
- Low NPSH requirement — perfect for demanding flow conditions
- Non-lubricated design — ideal for food-grade and clean service applications
- Easy operation — reliable daily use requires little training
- Minimum maintenance — intended to lower operating expenses and downtime
Cryogenic Liquid Centrifugal Transfer Pumps
Smooth. Continuous. Efficient — for High-Volume Liquid Transfer.
Our centrifugal transfer pumps are a high-flow, low-maintenance companion to our cryogenic reciprocating pumps for large-volume transfers between cryogenic storage tanks and tankers. These pumps are designed to operate continuously on a variety of cryogenic liquids.
| Type | Centrifugal Transfer Pumps |
| Liquids Handled | LOX, LN₂, LAr, LCO₂, N₂O |
| Capacity | 150 to 300 litres per minute |
| Pressure | Differential pressure of 15 bar and above |
| Application | Tank-to-tanker transfer, bulk de-bulking operations |
Key Features:
- Long-life mechanical seal — lowers the danger of leaks and the frequency of maintenance
- High hydraulic efficiency — reduced energy usage for large-scale transfer
- Low NPSH requirement — for dependable performance even in difficult site circumstances
- Tin bronze execution — available for oxygen service in accordance with safety regulations
- Low noise operation — appropriate for sensitive facility settings and metropolitan areas
- High reliability — designed to run continuously with little downtime
Everything You Need to Know — Your Questions Answered
We are aware that purchasing cryogenic equipment requires a substantial financial outlay. Before making a choice, our clients ask these crucial questions, which are addressed succinctly and simply.
How does a cryogenic pump work?
Using mechanical action to create pressure and force the fluid through the system, a cryogenic pump transports liquid gases at incredibly low temperatures, usually below -150°C. In a reciprocating kind, the cryogenic liquid is drawn in and released by a piston or plunger that oscillates inside a cold-end cylinder. Throughout the transfer procedure, the fluid remains liquid thanks to special materials and insulating features that resist heat infiltration.
What is the purpose of a reciprocating pump?
Delivering precise, high-pressure fluid transmission in regulated amounts is the goal of a reciprocating pump. This is crucial for cylinder filling stations in cryogenic applications where a constant pressure output between 35 and 300 bar is needed. When centrifugal pumps are unable to reach the necessary discharge pressure, reciprocating pumps perform exceptionally well in high pressure applications.
What are the two types of reciprocating pump?
The two main kinds are: (1) Piston Pumps, which use a piston inside a cylinder to create pressure and are usually appropriate for moderate pressures; and (2) Plunger Pumps, which use a plunger outside the seal and provide superior sealing performance, appropriate for applications involving extremely high pressures. Plunger-type reciprocating pumps are the most popular in cryogenic operation because of their exceptional pressure capability and suitability for cryogenic fluids.
What is cryogenic used for?
Common applications include LNG (liquefied natural gas for energy), industrial gas supply (oxygen, nitrogen, argon), medical and healthcare (liquid oxygen for hospitals), food processing (quick-freezing, modified atmosphere packaging), aerospace (rocket propellants), and specialty chemical manufacturing. Cryogenic reciprocating pumps are essential for safe and effective liquid gas transfer in all of these industries.
Why Choose AMI for Your Cryogenic Reciprocating Pump Needs?
Trusted by Industry Leaders. Proven in the Field.
For many years, AMI has supplied and integrated cryogenic equipment to the energy, medical, and industrial sectors. Our ability to develop, install, commission, and service entire cryogenic systems that are specifically tailored to your needs is just as strong as the items we offer.
- Comprehensive product range: All liquid types and pressure levels are covered by centrifugal transfer pumps and reciprocating cryogenic pumps.
- Turnkey capability: Complete cylinder filling stations, de-bulking stations, and on-site liquid supply systems are all designed and delivered by us.
- Technical expertise: Our staff has extensive domain expertise in handling cryogenic fluids and high pressure applications.
- International quality standards: Every piece of equipment is produced in accordance with global safety and quality standards.
- After-sales support: We provide field service, maintenance, and spare parts availability to support each installation.
Industries and Applications We Serve
Our centrifugal transfer pumps and cryogenic reciprocating pumps are used in many different industries where the dependable transfer of liquefied gases at high, medium, and low pressure is essential to operations.
- Industrial Gas Production: Bulk gas distribution and cylinder filling for argon, nitrogen, and oxygen.
- Medical & Healthcare: Systems that distribute liquid oxygen to hospitals and other healthcare facilities.
- Food & Beverage: CO₂ and nitrous oxide filling for modified atmosphere, quick-freezing, and carbonation applications.
- LNG & Energy: Fuelling stations and the transportation of liquid natural gas.
- Aerospace & Defence: Handling cryogenic fluids precisely for testing and propellant applications.
- Pharmaceutical: Controlled supply of cryogenic liquids for production and storage.
- Laboratory & Research: High-precision, low-volume cryogenic gas handling for research and development centres.
Ready to Find the Right Cryogenic Pump for Your Operation?
Our staff is prepared to assist you with every step of the selection process, from pump specification and capacity planning to complete turnkey installation, whether you are expanding a cylinder filling station, establishing a new de-bulking facility, or replacing current cryogenic equipment.
Contact AMI today — talk to our technical staff and we'll assist you in selecting the ideal cryogenic reciprocating pump for your needs in a timely and cost-effective manner.
