Greentech International (Zhangqiu) Co., Ltd.
Greentech Industry (Jinan) Co., Ltd.
When you need clean, stable air for industrial systems, you don’t want surprises. You want an air blower that works the same way in different countries, different plants, and different applications. That’s why many engineers choose the 4RB series 3AC side channel blower, also known as a soplante anular or ring blower. It’s designed to be flexible, reliable, and easy to use worldwide.
The 4RB 3AC side channel blower comes with UL, CCC, and CE approvals. This means it can be used in many regions without extra testing or paperwork. For OEMs and system integrators, this saves time and reduces risk when exporting machines.
From packaging lines to water treatment and aquaculture, this ring blower fits easily into different systems. Its “all-rounder” design makes it a safe choice when you need one solution for many projects.
With inlet air volume up to 2,500 m³/h, the 4RB series can move a lot of air smoothly. This is ideal for aeration tanks, drying lines, and material handling.
A differential pressure up to 780 mbar gives enough force for long pipe runs and diffusers. In aquaculture, for example, a ring blower for aeration systems helps keep oxygen levels stable for fish and shrimp.
The G-series design focuses on low noise and low vibration. This makes the blower more comfortable to use in indoor plants or near workers.
Side channel blowers have no internal contact parts. That means less wear and fewer service stops. Compared with complex centrifugal turbo machines, the 4RB design is simpler and more forgiving in daily operation.
When paired with a frequency converter, the blower becomes a variable speed ring blower for flow control. You can adjust airflow exactly to process needs instead of running at full power all the time.
In aeration systems, speed control helps match oxygen supply to real demand. This improves efficiency and reduces energy waste, especially in systems that run 24/7.
Compared to traditional air blowers or high-speed centrifugal turbo units, side channel blowers offer a good balance of airflow, pressure, and simplicity. They are easy to install, easy to control, and easy to maintain.
Thousands of users worldwide rely on the 4RB series because it works without drama. Plug it in, set the speed, and let it run.
If you need a globally approved, low-noise, and flexible blower for aeration, conveying, or general air supply, the 4RB 3AC side channel blower is a solid choice. It’s not flashy—it’s just dependable.

ring blower product information
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