Axtel GM-7L Rotary piston blower

• Pneumatic conveying of dry bulk materials in food processing lines.
• Aeration in wastewater treatment or fermentation processes.
• Vacuum applications for packaging or material handling.
• Agitation of liquids in mixing tanks.
• Drying processes requiring forced air circulation.

Typical capacity

For this class of equipment, rotary piston blowers commonly offer airflows ranging from 100 to 500 m³/hr, depending on the specific model and application.

Power supply

Units of this type typically operate on a 3-phase industrial power supply, commonly 400V, 50Hz in the UK.

Motor power

Motor sizes for rotary piston blowers like the GM-7L typically range from 2.2 kW to 11 kW, influencing the blower's output and pressure capabilities.

Operating pressure

Rotary piston blowers are generally designed for low-pressure applications, typically providing pressures up to 1 bar (gauge) or vacuum levels up to -0.5 bar (gauge).

Footprint

The footprint for a unit of this type is typically compact, often around 0.5m x 0.5m x 0.8m, though this can vary with ancillary equipment.

Noise level

While specific levels vary, rotary piston blowers commonly operate in the 75-85 dB(A) range, often requiring acoustic enclosures in sensitive environments.

• What is the primary difference between a rotary piston blower and a rotary lobe blower?

  Rotary piston blowers typically offer higher volumetric efficiency and can achieve slightly higher pressures or deeper vacuum compared to standard rotary lobe blowers, often with less pulsation.

• Is this type of blower suitable for continuous operation?

• What maintenance is typically required for a rotary piston blower?

• Can this blower handle moist air or vapours?

• What are the typical installation requirements for a unit like this?

Used air compressors for lab and pharma applications are generally valued for reliability and cost savings. Buyers typically prioritize checking maintenance history, confirming pressure ratings meet specific requirements, and verifying oil-free operation where contamination control matters. Key strengths include durability when properly serviced, consistent performance across extended operational hours, and significant capital cost reduction compared to new units. Inspecting seals, checking for corrosion, and confirming recent servicing records are standard considerations when purchasing secondhand.

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