FAQ:“We’ve observed a sudden decrease in flow rate through our SS strainer baskets. What factors could be contributing to this and how can we troubleshoot it?”

A:Sudden decrease in flow rate through SS strainer baskets can be indicative of various underlying issues in a fluid processing system. Understanding these factors is essential for effective troubleshooting and maintenance. Here are some common contributors to a reduced flow rate:

Clogging and contaminants: The most frequent cause of decreased flow is the accumulation of debris, particles, or contaminants in the strainer basket. Over time, these materials can obstruct the flow path, reducing the effective area for fluid passage. Routine cleaning and maintenance are crucial to prevent and address this issue.

Mesh damage or wear: Strainer baskets are typically equipped with fine mesh or perforations to capture particles. Continuous exposure to abrasive or corrosive materials can lead to mesh damage or wear, creating openings that allow contaminants to pass through or clog the mesh more easily. Inspect the mesh for signs of damage and replace it if necessary.

Incorrect mesh size: Choosing the wrong mesh size for your specific application can result in inadequate filtration and a higher likelihood of clogging. Ensure that the mesh size is appropriate for the size of particles or contaminants you expect to encounter. A finer mesh may be needed for smaller particles, but this should be balanced with the potential for increased clogging.

Fluid viscosity: Changes in the viscosity of the fluid being processed can affect flow rates through strainer baskets. Thicker or more viscous fluids may pass through the mesh more slowly. Adjustments or considerations in the strainer design may be necessary for fluids with varying viscosities.

Pressure drops: Excessive pressure drops across the strainer can impede flow. This can occur if the strainer basket is clogged, or if the strainer design is not suitable for the given flow rate. Evaluate the strainer’s pressure drop specifications and ensure they align with your system’s requirements.

Inadequate backwash or cleaning: Strainers often come equipped with cleaning mechanisms like backwash or self-cleaning systems. If these mechanisms are not functioning correctly or are not utilized regularly, it can lead to a decrease in flow rate. Ensure that backwash or cleaning procedures are carried out as recommended by the manufacturer.

Installation and piping issues: Improper installation, including incorrect orientation or alignment of the strainer, can create flow restrictions. Additionally, issues in the upstream or downstream piping, such as bends, valves, or restrictions, can affect flow rates.

To troubleshoot a sudden decrease in flow rate through SS strainer baskets,  first, ensure the system is safely shut down, and pressure is relieved to prevent any accidents during troubleshooting.

Then, remove the strainer basket carefully and visually inspect it for clogs, debris, or damage to the mesh. If you find blockages, clean or replace the strainer element as necessary.

Inspect the upstream and downstream piping for any obstructions, valves that may be partially closed, or bends that could affect flow. Clear any blockages or adjust valves accordingly.

After that, ensure that the mesh size of the strainer basket is appropriate for the application. If it’s too fine, consider switching to a coarser mesh if feasible or necessary for your process.

Analyze changes in fluid properties such as viscosity and temperature, as these can impact flow rates. Adjust the strainer design or mesh size accordingly if the fluid properties change significantly. Examine the strainer basket for any signs of damage or wear, especially in the mesh. Replace damaged components to restore proper filtration.

Then, measure the pressure drop across the strainer to determine if it’s within the acceptable range. High pressure drops may indicate a clogged strainer or an improperly designed strainer for the system.Ensure that routine maintenance, including backwash or cleaning procedures, is being performed according to the manufacturer’s recommendations.

After addressing any identified issues, reassemble the strainer basket, restart the system, and monitor the flow rate to confirm that the problem has been resolved.

Last, implement a regular monitoring schedule to detect and address potential flow rate issues before they become critical.

By following these steps and maintaining a proactive approach to strainer maintenance, you can troubleshoot and resolve sudden decreases in flow rate through SS strainer baskets, ensuring the continued efficiency and reliability of your fluid processing system.