Rotary Vane Compressors - HR 04 - 07 Compressors
The Hydrovane HR Series of rotary vane compressors unmistakably Hydrovane but one hundred percent new. It's not so much evolution, but Regeneration.
The Hydrovane Regeneration HR Series is reassuringly familiar on the outside with significant changes on the inside.
Key Facts
50/60 Hz
4 - 7.5 kW
7 - 10 bar
0.57 to 1.25 m3/min
20.1 to 44.1 cfm
Air compressor only or with tank (air receiver) or with air dryer or with all 3 including air filter packages available (left hand side below)
Mild Steel Rotary Vane Air Compressor, Mild Steel Rotary Vane Air Compressor 300 L
(Example rotary vane compressors — not the exact industrial Hydrovane range but similar technology)
Rotary vane compressors are positive-displacement compressors where air is compressed by trapping it in crescent-shaped chambers formed between a rotating eccentric shaft and sliding vanes. As the rotor turns, the gas volume decreases and pressure increases smoothly with low pulsation.
The HR 04 – 07 series refers to a family of Hydrovane Regeneration (HR) rotary vane compressors manufactured by CompAir/Hydrovane. They are designed for dependable operation with features that enhance performance and reliability.
⚙️ Key Specifications (HR 04 – 07 Series)
These compressors share the following typical specifications:
FeatureHR 04 – 07 SeriesMotor Power4.0 – 7.5 kWOperating Frequency50/60 HzWorking Pressure~7 – 10 barFree Air Delivery (FAD)~0.57 – 1.25 m³/min (20 – 44 cfm)Noise Level~66 dB(A) (quiet operation)DriveDirect drive (no belts/gears)SpeedSlow RPM for long life and low wear
These compressors can be supplied:
As a base unit only (compressor block),
With an air receiver (tank),
With an air dryer & filters, or
All combined in a fully packaged system.
🛠️ How They Work
Rotary vane compressors use a rotor with sliding vanes set eccentrically inside a cylindrical housing. As the rotor turns, air is drawn in, trapped in chambers between the vanes, and compressed continuously as those chambers shrink in volume. This produces smooth, pulse-free air ideal for many industrial tasks.
Advantages include:
Quiet operation due to slow speed and fewer vibrations.
High reliability with minimal moving parts, often lasting 100, 000+ hours.
Clean, quality air output with low oil carryover.
Direct drive design means fewer maintenance items than belt-drive units.
🧰 Typical Applications
HR 04 – 07 compressors are used in environments that require consistent, medium-pressure compressed air, such as:
Workshop & tool operation
Pneumatic controls
Small-to-medium industrial machines
Packaging & printing
Laboratories & instrumentation
Dental and medical air systems
🧠 Summary
The HR 04 – 07 Rotary Vane Compressor series represents a robust and versatile mid-range compressed air solution, with 4 – 7.5 kW motors, reliable slow-speed vane technology, and multiple configuration options (basic compressor, integrated receiver, dryer packages, etc.). Their design emphasizes quiet operation, longevity, and smooth airflow, making them well-suited for many industrial applications requiring stable medium-pressure air.
If you want, I can also help you compare HR 04 – 07 models to other types of compressors (like screw or piston types) or give you a buying/selection guide based on your specific needs
