Industrial Gases Application

High-Pressure Cryogenic Piston Pumps | Cylinder Filling | MINGXIN

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Product Overview

MINGXIN’s Cryogenic Piston Pump (Reciprocating Pump) is a heavy-duty, high-pressure liquid transfer solution engineered specifically for industrial gas cylinder filling and high-pressure pipeline networks. Designed to efficiently and safely pressurize Liquid Oxygen (LOX), Liquid Nitrogen (LIN), Liquid Argon (LAr), Liquid Carbon Dioxide (LCO₂), and Liquefied Natural Gas (LNG), this pump delivers continuous, reliable operation with minimal vaporization loss. It is the core prime mover for any modern high-pressure gas filling station.

Key Features & Design Highlights

  • Vacuum-Jacketed Cold End: Features an advanced, high-vacuum insulated cold end that drastically reduces heat leak. This ensures rapid pump cool-down times, minimizes liquid evaporation, and prevents vapor lock (cavitation) during operation.

  • Premium Sealing Technology: Equipped with specially formulated, wear-resistant cryogenic seals (PTFE composites) and high-strength piston rings. This design guarantees a prolonged service life, leak-free operation, and significantly lower maintenance frequency.

  • Versatile Configurations: Available in single, double, or triple-cylinder designs. The multi-cylinder options provide a larger flow rate while minimizing pressure pulsation for a smoother, more stable gas output.

  • Integrated Safety Interlocks: Engineered with a comprehensive safety control system, including automatic shutdown for over-pressure, motor overload protection, and temperature interlocks to safeguard both the equipment and the operator.

  • Smooth & Quiet Transmission: The transmission box is precision-machined and features an optimized lubrication system, ensuring low vibration and low-noise operation (<75 dB) even under maximum continuous load.

Technical Specifications

  • Applicable Media: LOX, LIN, LAr, LCO₂, LNG, N₂O, and other cryogenic fluids.

  • Flow Rate Capacity: 50 L/h – 5,000 L/h (Customizable based on cylinder configuration).

  • Max Discharge Pressure: Standard ratings at 165 Bar, 200 Bar, 250 Bar, and up to 350 Bar for specialized high-pressure applications.

  • Inlet Pressure: 0.02 – 1.6 MPa.

  • Material: S30408 / 316L Stainless Steel for all wetted cryogenic components, ensuring zero embrittlement at -196°C.

  • Certifications: Manufactured under an ISO 9001:2015 quality management system, fully compliant with CE and GB standards.

Industry Applications

  • Cylinder Filling Stations: The undisputed standard for filling high-pressure industrial gas cylinders (O₂, N₂, Ar, CO₂) safely and efficiently.

  • Medical Gas Supply: Ensuring the sterile, high-pressure filling of medical-grade oxygen cylinders for healthcare facilities and emergency responders.

  • Laser Cutting & Metallurgy: Delivering high-pressure, continuous auxiliary gases for metal fabrication and heavy industrial pipeline networks.

  • L-CNG Refueling Stations: Pressurizing LNG to high levels before vaporization, supplying CNG for natural gas vehicles and city gas networks.

The MINGXIN Advantage

At MINGXIN, we understand that downtime is costly. Our cryogenic piston pumps are built for rigorous 24/7 operation and undergo strict cryogenic testing before leaving our facility. All oxygen pumps are thoroughly cleaned and degreased for oxygen service. With MINGXIN, you receive not just a robust piece of machinery, but a fully supported engineered solution backed by readily available spare parts and global technical support.