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Hangzhou Tanvi Filtering Equipment Co.,Ltd

Address: Rm. 401, Longtan Road 20th, Hangzhou City,China

Contact: Dean Yan

Tel: 0086 0571 8872 0211

MP: 0086 18768179125

Fax: 0086 0571 8866 3751

Email: sales@tanvifilter.com


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Depth Filter Cartridges According To This Cleanliness Level
- Aug 11, 2017 -

Depth Filter Cartridges According to this cleanliness level

Depth filter (1) filter accuracy First of all, according to the needs of the hydraulic system to determine the cleanliness of the stain level, and then according to the cleanliness level according to the table to select the filter filter accuracy. The most commonly used depth filter on the construction machinery is the nominal filtration degree of 10μm.

Hydraulic oil cleanliness (ISO4406) Nominal filtration accuracy of filter element (μm) Application range 13/10 3 Hydraulic servo valve 16/13 5 Hydraulic proportional valve 18/15 10 General hydraulic components (greater than 10MPa) 19/16 20 General hydraulic components ( Less than 10MPa)

Since the nominal filtration accuracy can not truly reflect the filter capacity of the filter element, the diameter of the largest hard spherical particles that can pass through the filter under the specified test conditions is used as the absolute filter accuracy to directly reflect the initial filter ability.

The most important criterion for assessing the depth filter is the β value measured in accordance with ISO 4527-1981E (multi-pass test), that is, the oil mixed with the standard test powder is circulated through the oil filter several times, the inlet and the oil on both sides of the port The ratio of numbers.

(2) flow characteristics

Filter flow through the oil flow and pressure drop is an important parameter of the flow characteristics, according to ISO3968-91 standard flow characteristics of the test to draw the flow - pressure drop characteristic curve. At the rated oil supply pressure, the total pressure drop (filter shell pressure drop and filter pressure drop) should generally be below 0.2MPa.

(3) the depth of the filter (1) filter accuracy First of all, according to the needs of the hydraulic system to determine the cleanliness of the stain level, and then according to the cleanliness level according to the table to select the filter filter accuracy. The most commonly used depth filter on the construction machinery is the nominal filtration degree of 10μm.

 Hydraulic oil cleanliness (ISO4406) Nominal filtration accuracy of filter element (μm) Application range 13/10 3 Hydraulic servo valve 16/13 5 Hydraulic proportional valve 18/15 10 General hydraulic components (greater than 10MPa) 19/16 20 General hydraulic components ( Less than 10MPa)

Since the nominal filtration accuracy can not truly reflect the filter capacity of the filter element, the diameter of the largest hard spherical particles that can pass through the filter under the specified test conditions is used as the absolute filter accuracy to directly reflect the initial filter ability.