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The detailed structure and model meaning of PALL filter element


We often come into contact with PALL filter elements, and we all know that the hydraulic system using PALL filter elements is safer. But if you carefully analyze his structure, many people may not be able to tell the truth. In the maintenance of the PALL filter element, if we have a deep understanding of the structure of the PALL filter element, it will have a good effect on making better use of the filter element.

PALL filter element is composed of shell, multi-element filter element, backwash organization, and differential pressure controller. The transverse partition in the shell divides its inner cavity into upper and lower cavities. The upper cavity is equipped with multiple filter elements, which makes full use of the filtering space and significantly reduces the volume of the filter. Rinse the suction cup.

When working, the turbid liquid enters the lower cavity of the filter through the inlet, and then enters the inner cavity of the filter element through the partition hole. The impurities in the gap of the PALL filter element are intercepted, and the clean liquid passes through the gap to the upper cavity, and is finally sent out from the outlet.

PALL filter element collects pollutants in fluids in many forms. The device made of filter material to trap pollutants is called filter. Magnetic materials are used to adsorb magnetic contaminants called magnetic filters. The composition of the PALL filter element and its common functions also include electrostatic filters, separate filters and so on.

In the hydraulic system, everything that collects pollutant particles in the fluid is called a hydraulic filter. At present, the most widely used hydraulic filter in addition to the use of porous materials or winding-type fine gaps to block pollutants, there are also magnetic filters and electrostatic filters used in hydraulic systems.


There are thousands of PALL filter element models, and different PALL filter element models represent different filtration accuracy, height, outer diameter and inner diameter size. The meaning of Pall filter element coding rules From the model, we can first split the model into 5 parts, so that we can understand the coding rules and meaning of PALL filter element, take HC9020FKN8Z as an example:

1. HC: It is one of the PALL filter element series. Other series also include HFU, UE, etc.

2. 9020: indicates the serial number of the PALL filter element. If the serial number of the filter element is the same, it means that their inner and outer diameters are the same.

3. FKN: It needs to be disassembled for description here. F means oil filter element, K means filtration ratio ≥200 and there is a metal protective net inside and outside, and there is a non-metal protective layer inside the filter material, and N means the filtration accuracy is 6μm.

a. There are two other letters used to indicate the filtration ratio of the palI filter element, one is D, the thinness ratio is ≥200 and the inside and outside is covered with gold protection net, the other is U, the filtration ratio is ≥75 and there is a metal protection net inside.

b. There are five other letters used to indicate the filtration accuracy of the pall filter element, which are Z=1μm, N=6μm, S=12μm, T=25μm, R=40μm.

4. 8: Indicates that the height of the pall filter element is 8in, that is, the length of the element is 203.2mm. in is inch, length unit, 1in=25.4mm

5. Z: indicates that the seal of the pall filter element is fluorine rubber; in addition, there is the letter J, which means ethylene or propylene, the letter P, which means chloroprene rubber, and the letter H, which means nitrile rubber.



Common PALL filter element models:

HC0101FKN36H, HC0101FKP36H, HC2216FKP6Z, HC2216FKS6H, HC2216FKS6Z, HC2216FKT6H, HC2216FKT6Z, HC2217FKN4H, HC2217FKN4Z, HC0101FKS36H, HC0101FKT36H, HC2206FDN3H, HC2206FDP3H, HC2206FDS3H, HC2206FDT3H, HC2206FDN6H, HC2206FDP6H, HC2206FDS6H, HC2206FDT6H, HC2207FDN3H, HC2207FDP3H, HC2207FDS3H, HC2207FDT3H, HC2207FDN6H, HC2207FDP6H, HC2207FDS6H, HC2207FDT6H, HC2208FKN4Z, HC2208FKN6H, HC2208FKP6Z, HC2208FKP4H, HC2208FKP4Z, HC2208FKS6H, HC2208FKS6Z, HC2208FKS4H, HC2208FKT4Z, HC2208FKT6H, HC2208FKT6Z, HC2216FKN4H, HC2216FKN4Z, HC2216FKP4H, HC2216FKP4Z, HC2216FKS4H, HC2216FKS4Z, HC2216FKT4H, HC2216FKT4Z, HC2216FKN6H, HC2216FKN6Z, HC2216FKP6H, HC2253FDN6H, HC2253FDP6H, HC2217FKP4H, HC2217FKP4Z, HC2218FKN4H, HC2218FKN4Z, HC2218FKP4H, HC2218FKP4Z, HC2218FKN6H, HC2218FKN6Z, HC2218FKP6H, HC2218FKP6Z, HC2225FDN6H, HC2225FDP6H, HC2225FDN13H, HC2225FDP13H, HC2233FDN6H, HC2233FDP6H, HC2233FDN13H, HC2233FDP13H, HC2235FDN6H, HC2235FDP6H, HC2235FDN13H, HC2235FDP13H, HC2236FDN6H, HC2236FDP6H, HC2236FDN13H, HC2236FDP13H, HC2237FDN6H, HC2237FDP6H, HC2237FDN13H, HC2237FDP13H, HC2238FDN6H, HC 2238FDP6H, HC2238FDP13H, HC2238FDP6H, HC2252FDN6H, HC2252FDP6H, HC2252FDP13H, HC2252FDP6H, HC2253N6H, HC2253P6H, HC6500FKN26H, HC6500FKP26H, HC2257FDN6H, HC2257FDP6H, HC2257FDP13H, HC2257FDP6H, HC2285FDN6H, HC2285FDP6H, HC2285FDN13H, HC2285FDP13H, HC2293FDN6H, HC2293FDP6H, HC2293FDN13H, HC2293FDP13H, HC2295FDN6H, HC2295FDP6H, HC2295FDN13H, HC2295FDP13H, HC2544FKN9H, HC2252FKP10H, HC2252FKN10H, HC2252FKN19H, HC2252FKP19H, HC2253FKP8H, HC2253FKN16H, HC2253FKP16H, HC2254FKN8H, HC2254FKP8H, HC2254FKN16H, HC2254FKP16H, HC2256FKN6H, HC2256FKP6H, HC2256FKN10H, HC2256FKP10H, HC2257FKN6H, HC2257FKP6H, HC2257FKN10H, HC2257FKP10H, HC9021FKP8H, HC9100FKP8H, HC9100FKP13H, HC9104FKP8H, HC9104FKP13H, HC9300FKP8H, HC9300FKP13H, HC9400FKP13H, HC9400FKP26H, HC9400FKP39H, HC9401FKP8H, HC9401FKP13H, HC9404FKP8H, HC9404FKP12H, HC9404FKP13H, HC9404FKP16H, HC9404FKP26H, HC9404FKP39H, HC9600FKP4H, HC9600FKP8H, HC9600FKP13H, HC9600FKP16H, HC9601FKP4H, HC9601FKP8H, HC9601FKP11H, HC9601FKP13H, HC9601FKP16H, HC9601FKP21H, HC9604FKP8H, HC9604FKP12H, HC9604FKP13H, HC9604FKP16H, HC9604FKP26H, H C9604FKP39H, HC9606FKP8H, HC9606FKP13H, HC9651FKP8H, HC9651FKP16H, HC9654FKP16H, HC9700FKP8H, HC9700FKP9H, HC9700FKP27H, HC9800FKP4H, HC9800FKP8H, HC9800FKP13H, HC9801FKP4H, HC9801FKP8H, HC9801FKP13H, HC9804FKP4H, HC9804FKP8H, HC9901FKP13H, HC9901FKP26H, HC9901FKP39H, HC9901FDN26H, HC8904FKT39H, HC9600FKN8H, HC8400FKT39H, HC2225FDP6H, HC2225FDN13H, HC2225FDP13H, HC2233FDN6H, HC2233FDP6H, HC2233FDN13H, HC2233FDP13H, HC2235FDN6H, HC2235FDP6H, HC2235FDN13H, HC2235FDP13H, HC2236FDN6H, HC2236FDP6H, HC2236FDN13H, HC2236FDP13H, HC2237FDN6H, HC2237FDP6H, HC2237FDN13H, HC2237FDP13H, HC2238FDN6H, HC2238FDP6H, HC2238FDP13H, HC2238FDP6H, HC2252FDN6H, HC2252FDP6H, HC2252FDP13H, HC2252FDP6H, HC2253N6H, HC2253P6H, HC6500FKN26H, HC6500FKP26H, HC2257FDN6H, HC2257FDP6H, HC2257FDP13H, HC2257FDP6H, HC2285FDN6H, HC2285FDP6H, HC2285FDN13H, HC2285FDP13H, HC2293FDN6H, HC2293FDP6H, HC2293FDN13H, HC2293FDP13H, HC2295FDN6H, HC2295FDP6H, HC2295FDN13H, HC2295FDP13H, HC2544FKN9H, HC2544FKP9H, HC2544FKN19H, HC2544FKP19H, HC2618FDN6H, HC2618FDP6H, HC2618FDN13H, HC2618FDP13H, HC6200FKN4H, HC6200F KP4H, HC6200FKN8H, HC6200FKP8H, HC6400FKN8H, HC6400FKP8H, HC6400FKN13H, HC6400FKP13H, HC6400FKN16H, HC6400FKP16H, HC6400FKN26H, HC6400FKP26H, HC6500FKN13H, HC6500FKP13H, HC6500FKN16H, HC6500FKP16H, HC8914FKP13H, HC8914FKP14H, HC7400FKN4H, HC7400FKP4H, HC7400FKN8H, HC7400FKP8H, HC7500FKN4H, HC7500FKP4H, HC8200FKP8H, HC8200FKP13H, HC8200FKN26H, HC8300FKP16H, HC8300FKP39H, HC8304FKP16H, HC8304FKP39H, HC8310FKP16H, HC8310FKP39H, HC8314FKP16H, HC8314FKP39H, HC8400FKP8H, HC8400FKP16H, HC8400FKP26H, HC8400FKP39H, HC8500FKP8H, HC8500FKP13H, HC8500FKP26H, HC8700FKP4H, HC8700FKP8H, HC8700FKP13H, HC8800FKP8H, HC8800FKP13H, HC8800FKP26H, HC8900FKP13H, HC8900FKP16H, HC8900FKP26H, HC8900FKP39H, HC8904FKP8H, HC8904FKP13H, HC8904FKP14H, HC8904FKP16H, HC8904FKP26H, HC8904FKP39H, HC9650FKP8H, HC9650FKP16H, HC9651FKP8H, HC9020FKP4H, HC9020FKP8H, HC9021FKP4H, HC9021FKP8H, HC9100FKP8H, HC9100FKP13H, HC9104FKP8H, HC9104FKP13H, HC9300FKP8H, HC9300FKP13H, HC9400FKP13H, HC9400FKP26H, HC9400FKP39H, HC9401FKP8H, HC9401FKP13H, HC9404FKP8H, HC9404FKP12H, HC9404FK