Small 3-Lobe Pneumatic DC Roots Blower for Sewage & Industry

The Roots Blower delivers oil-free, high-efficiency air with adjustable pressure and low noise to keep sewage and industrial processes running reliably and with minimal maintenance. Its compact three-lobe profile and precision four-shaft rotor machining ensure stable capacity across pressure changes, low vibration, and long service life. Packaged in standard export cartons and produced under strict quality control with quick 3–20 day delivery, the simple, service-friendly design reduces downtime and simplifies installation and upkeep.

Compact Pneumatic 3-Lobe Blower

This small 3-lobe pneumatic DC Roots Blower is a displacement, oil-free unit offering outlet sizes from 40–300 mm and capacities of about 0.6–160 m3/min with single-stage pressures up to 0.8 kgf/cm2 to suit sewage and industrial applications. Its balanced rotor geometry and special lobe profile provide high efficiency, minimal capacity change with pressure, low vibration and low noise, delivering stable air for sludge dewatering, aeration and pneumatic conveying. Built with two counter-rotating impellers machined by an advanced four-shaft process for tight clearances, the compact and simple structure ensures durability, easy maintenance and reliable continuous operation.

The small three-lobe pneumatic Roots Blower for sewage and industrial use employs two counter-rotating impellers to provide displacement air with adjustable pressure and completely oil-free delivery. It covers outlets from 40–300 mm and capacities from 0.6–160 m3/min while offering low noise, stable flow against pressure changes, and high efficiency from precision-profile rotors. With a simple, robust design and strict quality control, the unit promises reliable long life, accurate performance, and fast delivery.

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Efficient Compact Reliable Airflow

This small 3-lobe Roots Blower is engineered with precision-machined rotors and a robust cast-iron housing, reflecting years of brand expertise in sewage and industrial aeration applications. The DC-driven pneumatic design delivers stable, low-pulsation airflow with adjustable speed control, low noise, and corrosion-resistant finishes suited to wet environments. Key features include a compact footprint, dynamically balanced rotors, IP-rated motor options, and easy-access seals for maintenance, offering energy efficiency, long service life, reduced vibration, and simplified installation to minimize downtime.

The Small 3-Lobe Pneumatic DC Roots Blower features a robust housing of cast or ductile iron and precision‑machined three‑lobe rotors made from heat‑treated alloy steel, produced with a four‑shaft machining process for exact profiling and dynamic balance. Shafts and bearings are hardened (with stainless options for sewage service) and use sealed, oil‑free internal clearances and polished surfaces to ensure contaminant‑free, low‑noise operation and long service life. External epoxy coatings or optional stainless/aluminum components provide corrosion resistance for sewage and industrial environments, while all materials and parts are subject to strict quality control.

◎ material introduction 1 

◎ Rugged Ductile Housing

◎ Precision Alloy Rotors

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