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Pipework strainers, also known as pipeline strainers or inline strainers, are devices used in plumbing and fluid handling systems to remove unwanted solid particles and debris from a flowing liquid. They are typically installed in a pipeline to protect sensitive equipment, such as pumps, valves, and meters, from potential damage caused by particulate matter present in the fluid.
Here’s how pipework strainers generally operate:
Filtration Process: When a fluid (liquid or gas) flows through the pipeline, it passes through the strainer. The strainer contains a mesh or perforated screen that acts as the filtration medium. The screen is designed to trap particles larger than a specific size while allowing the rest of the fluid to pass through.
Particle Trapping: As the fluid moves through the strainer, particles such as dirt, debris, rust, scale, and other contaminants get trapped by the mesh or screen. This prevents the particles from proceeding further downstream and causing potential damage to sensitive equipment.
Accumulation and Maintenance: Over time, the trapped particles accumulate on the strainer’s surface. As the debris builds up, it can lead to a pressure drop across the strainer, affecting the system’s efficiency. To maintain the system’s performance, regular inspection and cleaning of the strainer are necessary.
Cleaning or Replacement: Depending on the type of strainer, the accumulated debris can be removed by backflushing, flushing, or manually cleaning the strainer element. Some strainers may have a blowdown valve to remove the trapped particles periodically. In cases where the strainer element is damaged or the debris buildup is too severe, the strainer element may need to be replaced.
Pipework strainers come in various designs, including Y-strainers, basket strainers, T-strainers, and duplex strainers, each with its specific applications and advantages. The choice of strainer depends on the type of fluid being handled, the level of particle filtration required, and the flow rates in the system.
It is essential to select the right type and size of strainer to ensure efficient filtration without causing excessive pressure drop in the system. Regular maintenance and cleaning are crucial to keep the strainer functioning properly and to protect downstream equipment from potential damage caused by contaminants.”