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Oxygen Gas Compressor

Oxygen (O₂) is a colorless, odorless gas that is essential to life and industry. As the second most abundant element in the Earth’s atmosphere, oxygen is critical not only for human respiration but also for combustion, chemical reactions, and various manufacturing processes. Its highly reactive nature makes it valuable across many sectors—but also introduces safety challenges when storing and handling it under high pressure.

Because of its chemical reactivity, oxygen must be compressed using specialized equipment that avoids contamination, overheating, or the risk of explosion. That’s where oxygen compressors—especially oil-free and diaphragm types—come into play.

Understanding Oxygen Compressors: Properties, Applications, and Real-World Success

Model: GV-5/4-150
Flow Rate: 5Nm³/h (Standard conditions: 0°C, 1 atm)
Inlet Pressure: 4 bar (Customizable range: 3–8 bar)
Discharge Pressure: 150 bar (Max. 3200 bar for ultra-high-pressure needs)
Compression Stages: 2-stage optimized design
Drive Options: Variable-speed electric motor 
Cooling System: Air + Interstage water cooling (ensures thermal stability)
Control System: Intelligent PLC + HMI (real-time monitoring of pressure, temperature, vibration)4

Common Applications of Compressed Oxygen

Compressed oxygen is indispensable in the following industries:

  • Medical and Healthcare

    • Oxygen therapy

    • Respiratory support

    • Emergency cylinder filling

  • Metal and Welding

    • Oxy-fuel cutting and welding

    • Blast furnaces in steel manufacturing

  • Chemical Processing

    • Oxidation reactions

    • Reactor feed gas

  • Aerospace and Aviation

    • Cabin pressurization and life-support systems

  • Environmental and Water Treatment

    • Ozone generation for purification

In each of these applications, high purity and safety are paramount, which is why selecting the right type of oxygen compressor is critical.

Types of Oxygen Compressors

1. Diaphragm Oxygen Compressors

These compressors are widely used for high-purity applications. The diaphragm design separates the oxygen from the compressor’s moving parts, ensuring that the gas never comes in contact with oil or metal surfaces.

  • Advantages:

    • Zero contamination

    • Ideal for 99.999% purity

    • Suitable for small to medium flow rates

2. Oil-Free Piston Compressors

Well-suited for larger flow rates and high-pressure cylinder filling, oil-free piston compressors are rugged and relatively simple to maintain.

  • Advantages:

    • High discharge pressure (up to 300 bar)

    • Reliable for long-term, continuous operation

    • More cost-effective than diaphragm models for large volumes

3. Scroll Compressors (for medical use)

Scroll compressors are commonly found in medical centers where lower pressures and quiet operation are needed.

  • Advantages:

    • Quiet and compact

    • Ideal for dental and clinical settings

    • Low maintenance

Case Study: Supplying a Diaphragm Oxygen Compressor to the Philippines

Project Overview

In 2024, a leading industrial gas distributor in the Philippines reached out to KEEPWIN for a reliable solution to compress high-purity oxygen from a PSA generator into storage cylinders. The client was looking for a safe, clean, and compact unit for indoor installation.

After an in-depth technical consultation, our engineers recommended the GV-5/4-150 diaphragm compressor.

Why the GV-5/4-150?

Key Specifications:

  • Model: GV-5/4-150

  • Flow Rate: 5 Nm³/h

  • Inlet Pressure: 0.4 MPa (from PSA oxygen generator)

  • Discharge Pressure: 15 MPa (150 bar)

  • Design Type: V-type diaphragm structure

  • Cooling System: Water-cooled for enhanced heat dissipation

  • Oxygen Purity Support: ≥ 99.5%

Key Features:

  • 100% Oil-Free Operation

  • Stainless Steel Wetted Parts (316L)

  • Dual Safety Relief Valves

  • PLC-Based Control with Auto Stop/Start Functions


Installation and Performance

The unit was shipped and installed in Quezon City, where it was integrated with a PSA generator and a vertical oxygen cylinder manifold.

  • Installation Time: 3 Days

  • Initial Output: 25 cylinders/day

  • Energy Efficiency: Reduced power consumption compared to legacy piston systems

  • Client Feedback:

    “The GV-5/4-150 runs quietly and safely. We are impressed with the engineering and the support from Keepwin’s technical team. It was the perfect match for our PSA system.”

The client has since ordered two additional compressors for separate hospitals in Cebu and Davao.


Why Choose KEEPWIN Oxygen Compressors?

KEEPWIN specializes in custom-engineered gas compressors for medical, industrial, and energy applications. With over 23 years of expertise, we have delivered solutions to hospitals, government agencies, and private industries across Southeast Asia, the Middle East, and Eastern Europe.

Our Strengths:

  • ✅ ISO9001-Certified Manufacturing

  • ✅ 100% Oil-Free Compressor Line

  • ✅ Technical Expertise in Oxygen Safety

  • ✅ Fast Delivery and Reliable After-Sales Service

  • ✅ Proven Track Record with PSA/O₂ Projects


Oxygen is a vital resource for both life and industry. But compressing oxygen safely requires specialized equipment designed with purity and safety in mind. Whether you’re filling medical cylinders or supplying oxygen for industrial processes, a diaphragm oxygen compressor like the GV-5/4-150 ensures performance without compromise.

At KEEPWIN, we don’t just sell compressors—we engineer trust and reliability into every unit we build.


Interested in a tailored oxygen compression solution for your facility?
Contact our experts or visit our website to learn more about our full line of oxygen compressors and oil-free compression systems. Contact Us

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