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Pacific Ranger Oil-Free Piston Compressors

Quiet. Clean. Reliable. Engineered for Precision.

Looking for a dependable source of clean, oil-free compressed air? Pacific Ranger’s oil-free straight piston compressors are designed for industries where air purity, low noise, and long-term reliability are essential. Available in power ranges from 0.75 HP to 20 HP, our compressors are built to perform in demanding environments while minimizing maintenance and operating costs.

🌿What is an Oil-Free Piston Compressor?

An oil-free piston compressor, also known as a reciprocating oil-less air compressor, delivers compressed air without using oil for lubrication. These systems run at reduced RPMs, making them quieter, more efficient, and ideal for sensitive applications where oil contamination is unacceptable.

🔍Oil-Free vs. Oil-Lubricated Compressors: Key Differences

Feature Oil-Free Compressor Oil-Lubricated Compressor
Lubrication No oil needed Requires oil
Maintenance Low Higher (regular oil changes)
Weight Lighter Heavier
Air Purity 100% Oil-Free Potential for oil carryover
Ideal For Cleanroom, medical, lab use High-pressure, heavy-duty use

Oil-free compressors are perfect for facilities requiring clean air, low noise, and easy maintenance.

✅Benefits of Pacific Ranger Oil-Free Compressor Technology

• 🔧 Maintenance-Free Operation
No oil changes or filter replacements related to lubrication.

• 💨 Contamination-Free Air
Ideal for medical, dental, food-grade, and electronic applications.

• 🔇 Ultra-Quiet Design
Built for noise-sensitive environments.

• ⚡ Energy Efficient
Operates at lower RPMs, reducing energy consumption and wear.

• 📜 Compliant with ISO and Regulatory Standards
Designed for use in regulated environments.

• 🛠️ Corrosion-Resistant Tanks
CRN-certified air tanks built to last.

🔗Applications Across Industries

Pacific Ranger’s oil-free piston compressors are trusted across a variety of sectors:

• 🏥 Medical and Dental Clinics

• 🧪 Laboratories and Pharmaceuticals

• 🍽️ Food & Beverage Processing

• 💻 Electronics and Cleanroom Manufacturing

• 🚗 Automotive Paint and Finishing Shops

🔧Custom Compressor Packages Available

To meet diverse application needs, we offer modular compressor packages with:

• ❄️ Aftercoolers for moisture removal

• 🧼 Multi-stage air filtration systems

• 💧 Desiccant air dryers

• 🔕 Sound-reducing cabinets for quiet operation

• 🛠️ Easy plug-and-play installation kits

⭐Why Choose Pacific Ranger?

Pacific Ranger is a trusted name in industrial air solutions. Our compressors are:

✔ Built for reliability and longevity

✔ Compliant with strict air quality and safety standards

✔ Supported by expert service and technical guidance

✔ Designed and tested to perform in mission-critical environments

📞Ready to Upgrade to Oil-Free?

Discover the power of Pacific Ranger’s clean air compressor solutions. Contact our team today for a customized quote, technical specs, or distributor information.

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There are typically two styles of storage cylinders utilized for breathing air purposes. ISO Cylinders or ASME cylinders. The ISO cylinders are a more economical choice. The ISO storage cylinders will require a 10- year recertification whereas the ASME cylinders have no recertification requirements. The ASME cylinders have more related hardware attached to the cylinders, than an ISO cylinder, that may require service or replacement in the future.

ISO Cylinders

  • Require a 10-year recertification

  • The 6000 psi cylinder weighs 195 lbs dry

  • Cylinder rated at 510 cf @ 6000 psi

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ASME Cylinders

  • No recertification requirement

  • Cylinder weights 400 lbs dry

  • Cylinder rated at 491 cf @ 6000 psi

  • ASME cylinders require a certified ASME Relieve Valve

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The Stallion Auto-Fill System utilizes a proprietary precision valve system, pressure transducers, a logic controller, and a color touch screen to perform all functions of a typical “cascade” air control panel. The defining attribute of the system is the ability to provide constant, precise fill rate control. The screen graphics allow the operator to see all functions as they are happening in real-time. An operator simply presses the “Start” key, selects the number of bottles being filled, and selects the fill pressure.

The Stallion Auto-Fill System can be incorporated into panels having full manual redundancy, or be used independently. Stallion Auto-Fill System is an available option on Centaur systems and Stationary Containment Fill Enclosures. It can also be integrated into air management panels for use on mobile systems. The Stallion Auto-Fill System can be configured for use on systems with or without a compressor. It can be used with 3 bank or 4 bank cascade systems.

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Auto-Fill Functions​

  • “Cascade” storage bank usage

  • Cylinder filling from compressor

  • Storage bank refill

  • Fill pressure control

  • Fill rate control

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Administrative Features

  • User Passcodes

  • Cylinder Pressure Selection

  • Allowable overfills

  • Fill rates

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Stallion Containment Fill Enclosures provide an aesthetically pleasing solution to adding a certified cylinder refill station to your facility. Whether you are upgrading your existing system or purchasing as a component along with a Stallion compressor, these packages will help you organize your air system.

STATIONARY FILL ENCLOSURES

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Mobile Fill Enclosures

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Stallion offers the Percheron for applications in which space is at a premium and access doors would be unusable. While this unit performs perfectly in a stationary application, its open design, low center of gravity, and modular components provide the installation flexibility and ease of maintenance that is necessary for vehicular installations. These horizontally configured compressors incorporate all the Stallion features and technology our customers have come to expect.

Standard Features​

  • 6000 psi – select from 7.5 to 25 horsepower.

  • Purification system matched to compressor output

  • Modular components that provide multiple configuration options, including remote location of components and controls

  • Color, touch-screen operator interface for simple, automated operation and monitoring with shut-down alarms and on-screen status messages

  • Stallion Sample Tap System (STS) for easy air sample retrieval

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Optional Features

  • CO monitor

  • Moisture monitor

  • Comprehensive electronic interstage monitoring

  • Connectivity package (email or text alerts for system status changes or malfunctions)

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Standard Dimensions

  • 7.5 & 10 HP:  59-7/8”W x 33-7/8”D x 43”H

  • 15, 20 & 25 HP:  75-3/16”W x 28-1/2”D x 51-9/16”H

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Stallion offers the Enbarr for applications in which space is at a premium and access doors would be unusable. Its open design provides the installation flexibility and ease of maintenance that is necessary for limited space installations. These vertically configured compressors incorporate all the Stallion features and technology our customers have come to expect.

Standard Features​

  • 6000 psi – select from 10, 15 or 20 horsepower

  • Purification system matched to compressor output

  • Color, touch-screen operator interface for simple, automated operation and monitoring with shut-down alarms and onscreen status messages

  • Stallion Sample Tap System (STS) for easy air sample retrieval

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Optional Features

  • CO monitor

  • Moisture monitor

  • Extended life purification upgrades

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Standard Dimensions

  • 39-3/8”W x 33-1/8”D 58-1/8”H

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Stallion offers the Enbarr for applications in which space is at a premium and access doors would be unusable. Its open design provides the installation flexibility and ease of maintenance that is necessary for limited space installations. These vertically configured compressors incorporate all the Stallion features and technology our customers have come to expect.

Standard Features​

  • 6000 psi – select from 10, 15 or 20 horsepower

  • Purification system matched to compressor output

  • Color, touch-screen operator interface for simple, automated operation and monitoring with shut-down alarms and onscreen status messages

  • Stallion Sample Tap System (STS) for easy air sample retrieval

​

Optional Features

  • CO monitor

  • Moisture monitor

  • Extended life purification upgrades

​

Standard Dimensions

  • 39-3/8”W x 33-1/8”D 58-1/8”H

Download PDF

The Pegasus vertically enclosed compressor is a full-featured system that incorporates the latest technology and features to ensure ease of operation and system longevity. The Pegasus compressor is designed to provide smooth, quiet operation in areas where floor space is limited, or where elevated controls are desired. When you purchase a Pegasus, you can be assured that you are purchasing a system that is built to perform, and built to last.

Standard Features​

  • 6000 psi – select from 7.5 to 25 horsepower

  • Purification system matched to compressor output

  • Fully enclosed cabinet for quiet operation

  • Latching service access doors

  • Color, touch-screen operator interface for simple, automated operation and monitoring with shut-down alarms and on-screen status messages

  • Stallion Sample Tap System (STS) for easy air sample retrieval

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Optional Features

  • CO monitor

  • Moisture monitor

  • Spring Rewind Hose Reel Module (50’, 75’ or 100’)

  • Comprehensive electronic interstage monitoring

  • Connectivity package (email or text alerts for system status changes or malfunctions)  

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Standard Dimensions

  • 44”W x 34-1/8”D x 74-5/8”H

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Stallion Centaur models integrate all components of a cylinder refill system into a single, turn-key package including a compressor, air storage vessel(s), purification system, air management panel, and a containment fill station.

​Centaur models are defined by the capacity of the fill station and the number of storage vessels that can be mounted in the cabinet. The Centaur 2 is the smallest of the series and is frequently chosen when space is a consideration. The Centaur 2-4 and Centaur 3 are equal in size, but offer expanded capabilities over the Centaur 2.

Centaur2G2

  • 2 Position Fill Station

  • Accepts up to 3 ASME or ISO Storage Vessels Standard

  • Dimensions 83-7/8”W x 34-1/8”D x 74-5/8”H

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Centaur2-4G2

  • 2 Position Fill Station

  • Accepts up to 4 ASME or ISO Storage Vessels Standard

  • Dimensions 93-7/8”W x 34-1/8”D x 74-5/8”H

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Centaur3G2

  • 3 Position Fill Station

  • Accepts up to 4 ASME or ISO Storage Vessels Standard

  • Dimensions 93-7/8”W x 34-1/8”D x 74-5/8”H

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Standard Features​

  • 6000 psi – select from 7.5 to 25 horsepower

  • “Bulk” air management panel, with remote fill port/valve

  • 2 or 3 position containment fill enclosure

  • Purification system matched to compressor output

  • Fully enclosed cabinet for quiet operation

  • Latching service access doors

  • Color, touch-screen operator interface for simple, automated operation and monitoring with shut-down alarms and on-screen status messages

  • Stallion Sample Tap System (STS) for easy air sample retrieval

​

Optional Features

  • “Cascade” air management panel

  • Stallion Auto-Fill system

  • Additional ASME or ISO Storage​ Vessels

  • CO monitor

  • Moisture monitor

  • Spring Rewind Hose Reel Module (50’, 75’ or 100’)

  • Comprehensive electronic interstage monitoring

  • Connectivity package (email or text alerts for system status changes or malfunctions)

  • Connections for remote storage cylinders

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Download PDF

5 – 105 CFM  High Pressure Reciprocating Air Compressors

Pacific Ranger 6500 Series high pressure air compressors base-mounted piston technology that provides pressure as high as 1,000 psi. Typical applications include PBM, power plants and engine starting, commercial shipping. Using the same durable construction found in all of our two-stage reciprocating compressors, the high pressure units offer reliability, long life and easy maintenance. Our models offer you the flexibility to build a package specific to your needs, that delivers all the reliability of a premium high pressure compressor.

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