A Complete Guide To Common Problems & Solutions For Troubleshooting Your Rotary Airlock Valve!!

In industrial processes, rotary airlock valves play a crucial role in regulating the flow of bulk materials into and out of systems and vessels. These valves are highly valued for their durability and reliability. However, like any mechanical equipment, rotary airlock valves can encounter issues from time to time. To help troubleshoot these problems, Intech Engineers, a leading Rotary Air Lock Valve Manufacturers, has compiled a list of the most common issues faced by these valves and their corresponding solutions. So, read on to gain valuable insights and effective solutions.

Rotary Airlock Valves: The Unsung Hero of Bulk Material Handling

Rotary airlock valves are mechanical components that regulate material flow between two separate environments, usually involving pressurized systems. These valves find widespread use in several industrial applications, including conveying, dust collecting, and pneumatic conveying. A circular rotor, equipped with blades or vanes, rotates at a set speed within these valves. The vanes help convey the material through the valve while also preventing air from entering the system. This design permits the material to flow through while keeping it from escaping the pressurized environment. Typically, they are employed for dry bulk materials such as powders, granules, pellets, and flakes. As one of the leading Belt Conveyor Manufacturers, we appreciate the significance of Rotary Airlock Valves and are well aware of the problems that arise during their use. Therefore, we have compiled solutions to each problem. Read on to find out more.

A Solution To Rotary Airlock Valves and Its Issues….!!

Problem 1: Air Leakage

Air leakage is a common issue encountered with rotary airlock valves, and it can lead to decreased performance and increased energy costs. If air leaks through the valve, the system pressure can drop, resulting in reduced flow rate of the processed material. Timely resolution of air leakage issues is vital to guarantee optimal valve performance and energy efficiency..


Identifying the root cause of air leakage is crucial in resolving the problem. Conduct an inspection to determine if the seals and gaskets are worn out or damaged. Examine the rotor for any signs of damage or wear and tighten any loose nuts or screws. Replace any defective seals or gaskets with new ones. If the air leakage continues, consider upgrading to better-quality seals or gaskets.

Problem 2: Material Buildup

Accumulation of material inside the rotary airlock valve can adversely affect its performance. When debris builds up inside the valve, it can lead to clogging and reduced effectiveness.


To avoid material accumulation, ensure that the rotary airlock valve is appropriately sized for the application and the material being processed. Installing either an air purging system or a cleaning fluid injection device can prevent buildup. It is crucial to clean the valve frequently to eliminate any built-up material. If material accumulation persists, consider upgrading to a valve with features designed to prevent or minimize buildup.

Problem 3: Rotor Damage

The rotor is an integral part of rotary airlock valves as it is responsible for facilitating the movement of material through the valve. Any damage to the rotor can lead to material blockage or complete malfunction of the valve.


Regularly inspect the rotor for any signs of wear and damage, such as cracks, chips, or excessive wear. If any damage is found, it is necessary to replace the rotor to prevent the material from getting trapped inside the valve or causing the valve to malfunction. Additionally, upgrading to a more robust rotor material may be a viable option if damage or wear persists.

Problem 4: Improper Valve Sizing

If the rotary airlock valve is not properly sized for the application, it can lead to several problems, including reduced efficiency and increased wear and tear. If the valve is too small for the application, it may be overloaded and fail prematurely. On the other hand, if the valve is too large, material can get stuck inside, leading to inefficient operation. Properly sizing the valve for the application can prevent these issues and ensure optimal performance.


Regularly check the valve’s size to make sure it’s appropriate for the application and the material being processed. Consult with a valve manufacturer or specialist to ensure that the correct size is being used. Consider upgrading to a valve with adjustable clearance to improve productivity and prevent overload.

Problem 5: Excessive Wear

Excessive wear and tear on a rotary airlock valve can result in reduced efficiency and premature failure.


Perform routine inspections on the valve to identify any signs of wear and tear. Look for any damage to the rotor, housing, and other components. Replace any damaged or worn-out parts. To prevent excessive wear, consider upgrading to stronger materials or coatings. Additionally, regular maintenance and cleaning can help reduce wear and tear.

Problem 6: Misalignment

Misalignment is a common issue that can occur when the valve is not properly installed or when the valve housing or supports become misaligned over time. This can cause binding, excessive wear, and decreased efficiency in the valve’s performance.


Regularly check the valve for any indications of misalignment such as binding or uneven wear. Correct the problem by adjusting the valve or housing if misalignment is detected. Installing supports or additional bracing can prevent misalignment from happening in the future.

Problem 7: Valve Jamming

When material becomes stuck inside the valve or the rotor gets stuck, valve jamming can occur. This can result in decreased efficiency and potential valve failure.


Regularly inspect the rotary airlock valve to identify any signs of jamming, such as material accumulation or rotor damage. If jamming occurs, it can lead to decreased efficiency and even valve failure. In such instances, it is critical to shut down the valve immediately and clear the blockage. To prevent future occurrences of jamming, consider installing sensors or alarms that can detect blockages and alert the operator to take corrective action.

Problem 8: Excessive Noise

Rotary airlock valves can generate excessive noise, especially when handling abrasive materials or at high flow rates. Excessive noise can pose safety risks to workers and may also be a sign of underlying valve problems.


It is recommended to conduct regular inspections of the valve to identify any signs of wear or damage that may be contributing to excessive noise. Upgrading to a valve with features specifically designed to minimize noise, such as noise-reducing bearings or coatings, may also be worth considering. If the noise persists, installing sound-dampening materials or relocating the valve to a more secluded location may be necessary.

In industrial operations, rotary airlock valves play a critical role, but they may encounter issues periodically. By recognizing common problems and implementing solutions, you may decrease downtime, lower maintenance expenses, and enhance the efficiency and dependability of your rotary airlock valves. As a trusted manufacturer of filter bags in India, we are here to cater to your requirements. Look no further than us. We are always available to assist you. Contact us today!