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Why Is The Placement Of Strainers Critical

placement of strainer

The filtration system is one of the essential equipment used in many industries. Working smoothly and efficiently requires all of its parts to be in top condition, especially the pumps and strainers. The pump creates the suction that moves the liquid or gas through the system, while the strainer captures debris so the pump can continue to operate. With both components working together, the filtration system will function as designed. Investing in high-quality pumps and strainers ensures the system runs optimally.

What are Hydraulic Pump Strainers?

Typically, a hydraulic pump strainer is a mesh filter used to filter contaminants out of the hydraulic fluid as it enters the suction side of the pump. This strainer is typically screwed onto the pump’s intake port, located inside the hydraulic reservoir, and filters particles roughly 140 microns in size. Its purpose is to keep the hydraulic fluid clean and free of debris that can damage the pump, leading to costly repairs and downtime.

Why Are Pump Strainers Necessary?

As previously stated, the primary function of a strainer is to filter out any solid pollutants from the hydraulic fluid. If impurities are left unprocessed, they might harm the components of the pump. In addition, the system’s efficiency and longevity are reduced when the pump is damaged.

Choosing the wrong strainer for your system, on the other hand, might cause harm to the pump. First, the manufacturer’s guidelines must be studied while picking a strainer. You must also check that you have chosen the correct filter size and that it fits your system’s pressure and flow requirements. If your strainer does not fulfill those specifications, you risk causing irrevocable harm to your system.

Where to Place Your Strainer?

The placement of your strainer is determined first and foremost by the type of strainer required by your system. Pump suction strainers and inline filters are the two most prevalent types. Pump suction strainers are coarse mesh strainers that capture big particles that enter the pump. They are positioned at the pump’s suction intake. Inline filters are put in the fluid return line and are also known as return line filters or spin-on filters. This filter enables finer particle filtering than the pump suction strainer, resulting in a more effective filtration system. Since significant differential pressure might cause pump failure, inline filters are not fitted on the suction side of the pump.

Most pumps are designed to handle a certain amount of solids . The manufacturer may advise you on how large a particle your pump can handle and which filter type is suitable for the system. Finally, the location of your filter will be determined by the type of system you have and the level of filtration you require.

When Strainers are not Required?

While strainers are a vital feature of any filtering system, they are only sometimes necessary. For example, if the hydraulic fluid entering the system has already been filtered, it is not essential to filter it again within the system. Furthermore, because the improved design reduces the possibility of particles, specific modern hydraulic systems do not require a strainer. But, if the system is not correctly maintained, you may still have pump damage.

Choosing the Best Strainer

Strainers are critical components of a pump system. However, selecting a strainer and the location of that sieve can often be contentious. If you need help determining where to put a strainer in your system or which strainer to use, contact us at

BCST One-Stop Strainer Solution 

BCST is one of China’s leading, reliable and stable strainer manufacturers. With our premium quality and budget-friendly products, BCST is your most suitable choice for your next project. Our strainers solutions offer a wide material selection, ease of maintenance, high-pressure and temperature availability, flexibility, and multiple customization options. Plus, easy to install, allowing users to start their systems immediately. 

Our professional team with a solid technical background is ready to handle your next project. Visit and contact us today!

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