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Filter PL420 can't replace filters PL421

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Application of Anthracite in Filters

Application of Anthracite in Filters

Application of Anthracite in Filters Anthracite is a high-quality filtration material widely used in water treatment and industrial filtration systems. Due to its high carbon content, low impurity level, and excellent mechanical strength, anthracite provides efficient filtration performance and long service life. In multi-media filters, anthracite is commonly used as the top filtration layer because of its larger particle size and lower density compared to sand. This structure allows suspended solids, sediments, and impurities to be trapped effectively while maintaining a high flow rate. Anthracite filter media offers excellent resistance to abrasion and chemical corrosion, making it suitable for municipal water treatment plants, industrial water purification systems, cooling water systems, and wastewater treatment facilities. Its porous structure helps improve filtration efficiency and reduces pressure loss across the filter bed. In addition, anthracite can withstand repeated backwashing processes without significant degradation, ensuring stable and reliable performance over time. The use of anthracite in filtration systems helps improve water clarity, extend the lifespan of downstream equipment, and reduce maintenance costs. As a cost-effective and durable filtration medium, anthracite remains a preferred choice for industries seeking high-performance filtration solutions and consistent water quality.

Filter PL420 can't replace filters PL421
2019-06-21

In the past, the PL420 was used as the first primary filter for the fuel tank girders. There is no pressure. The common rail is pressurized, and the PL420 is under negative pressure.


Before the appearance of the electronic pressure pump, the transparent cup is very safe, there is no pressure damage to the transparent cup, but with the advent of the electronic pressure pump, the engine's two coarse filters change from negative pressure to 4 positive pressures or even greater pressure. The old-fashioned PL420 transparent cup has the risk of oil leakage.


Some OEMs changed the PL420 on the engine to the PL421 without a cup. However, some OEMs did not consider this problem. They still loaded the PL420. (There are now Delong) there are design risks.


It is recommended to use the filter PL421 for models equipped with an electronic pump.


Filters PL420 and PL421, we can provide, if you need, please feel free to contact us.


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