INTERNORMEN 01. E425.25VG.16. S.P Return Oil Filter Replacement Hydraulic Lubrication System for Power Plants Steel Plants

Core basic parameters of the product

01.E425.25VG.16. S.P replacement filter element is produced according to DIN24550 industrial filter standard. The finished product undergoes multiple sampling inspections for integrity, pressure resistance, and filtration efficiency. The key technical parameters are as follows:

-Product model: 01.E425.25VG.16. S.P (domestic substitute)

-Filtration accuracy: 25 μm, β (c) ≥ 100, nominal filtration grade

-Compatible filter: INTERNORMEN 01.E425 series return oil filter

-Model code definition: VG=fiberglass filter material; 16=maximum collapse pressure difference of 16 bar; S=Built in support structure; P=NBR nitrile rubber seal

-Applicable media: mineral anti-wear hydraulic oil, gear lubricating oil, water ethylene glycol emulsion

-Maximum collapse pressure difference: 16 bar, suitable for instantaneous pressure difference impact in the return oil pipeline

-Working temperature range: -30 ℃ to+110 ℃

-Suggest replacing the pressure difference: 0.2MPa. If the pressure difference reaches the threshold, replace the filter element in a timely manner

-Oil flow direction: from outside to inside, matching the standard flow direction of the return oil filter

-Structural form: Multi layer gradient glass fiber folding structure, double-sided metal support skeleton inside and outside

Detailed introduction of product materials

-Filter material: Multi layer gradient resin cured VG fiberglass filter material, increases the total folding area of the filter material, and is suitable for high flow return oil. The outer layer prioritizes the interception of large abrasive particles and sludge, while the inner layer completes the interception of 25 μ m particles; The filter material is cured by high-temperature impregnation, and the fibers are firmly bonded. It will not peel off or detach under repeated flow impact of return oil, avoiding small fibers from entering the oil tank and circulating to wear downstream components. Gradient layered pollution control design, where impurities are trapped in different filter layers, delaying pressure rise and reducing on-site replacement frequency.

-Internal and External Support Skeleton: Thickened punched galvanized carbon steel skeleton, dual directional support inside and outside, enhances overall anti extrusion ability, responds to flow impact and instantaneous negative pressure caused by the start and stop of the return oil pipeline, and prevents the filter element from being flattened and collapsed by oil flow. The high porosity design of the skeleton ensures high flux flow, reduces the initial pressure difference of the filter element, and does not add additional resistance to hydraulic circulation.

-Sealing parts: NBR nitrile rubber sealing ring is standard configuration, which is oil resistant, anti-aging, and resistant to medium swelling, to ensure that the filter element and the filter seat fit tightly, and to prevent oil bypass short circuit. High temperature and special flame retardant medium working conditions, supporting the upgrade of FKM fluororubber seals.

-End cap and bonding process: metal stamping end cap, high-strength two-component adhesive hot pressing composite, filter material, skeleton, and end cap firmly bonded. The adhesive strength has undergone cyclic pressure drop impact testing and will not peel or crack in environments with frequent fluctuations in return oil flow rate; The assembly size is 1:1 compared to the original factory, ensuring smooth disassembly and positioning, and stable sealing surface adhesion.

Main applicable scenarios and industries

-Metallurgical industry: complete sets of hydraulic stations for rolling mills and continuous casting are used for oil filtration, intercepting metal debris and sludge generated by rolling equipment, protecting the cleanliness of oil tanks, and reducing downstream precision filter element losses.

-Mining equipment industry: large mining hydraulic equipment for oil return purification, high impurity production under harsh mining conditions, and high pollutant absorption structure reduce maintenance frequency.

-Construction machinery industry: large mobile hydraulic equipment, high flow hydraulic pump station return oil filtration.

-Rubber and plastic machinery industry: large injection molding and extrusion equipment hydraulic station return oil filtration.

-Power industry: purification of large auxiliary oil stations and hydraulic control system return oil pipelines in power plants.

Core advantages of the product

1. Special design for high flux oil return, low flow resistance: The folding area of the filter material is optimized for high flow oil return conditions, with low initial pressure difference to ensure smooth oil return circulation in the system.

2. High pollution gradient filter material, extending maintenance cycle: Layered pollution structure, impurities dispersed in multiple layers of filter material, pressure difference rise smoothly, reducing filter element replacement frequency, and lowering labor and spare parts costs.

3. Anti flow impact, overall stable structure: The bidirectional metal support skeleton is matched with fiberglass filter material to withstand flow fluctuations caused by the start and stop of the return oil pipeline, reducing the risk of filter deformation and failure.

4. Pre purification of oil return to reduce the load on the entire system: intercept large particles of impurities before the oil returns to the tank, reduce tank deposits, and indirectly protect the oil pump, valves, and downstream precision filter elements.

Core advantages of source factory substitution

Our factory has experience in mass manufacturing the entire series of INTERNORMEN 01. E filter cartridges. We have established a special factory inspection process for 425 specification return oil filter cartridges, and conduct pressure resistance, sealing, and filtration efficiency verification for each batch of samples. We strictly control the risk of fiber detachment and prevent unqualified products from flowing into industrial sites. As a source manufacturer, we have cut the premium of multi-layer intermediaries for imported brands. We not only support single sample testing, but also undertake annual factory maintenance and large-scale bidding procurement for engineering projects; Mainstream regular models are in stock and can quickly respond to customers' urgent spare parts needs. We can customize and upgrade filter and sealing materials according to the customer's on-site media, temperature, and pressure conditions.

Frequently Asked Questions (FAQ)

Q1: Can the 25 μm return oil filter protect high-precision components such as servo valves?

A: It's not possible. 25 μm belongs to coarse precision oil return filtration, mainly removing large particle impurities; Servo valve protection requires the installation of a 3-10 μ m high-precision filter element in the pressure pipeline, which is used in combination with two-stage filtration.

Q2: What is the difference between the S built-in support structure version and the S-free version filter cartridge?

A: S represents the addition of internal support sleeves, which have stronger resistance to negative pressure and suction flattening; The S-version lacks inner reinforcement, and the external installation dimensions of the two are completely identical, allowing for mutual assembly.

Q3: Can the fiberglass oil return filter element be reused after cleaning?

A: It is not recommended to clean and reuse. Fiberglass belongs to deep filtration filter materials, and impurities are embedded inside the fibers. Cleaning cannot restore filtration efficiency and pollutant holding capacity; Cleaning can also easily cause fiber detachment, leading to secondary pollution of the system.

Q4: Apart from INTERNORMEN filter elements, what other oil filtration products do you have?

A: Our factory has a complete product line for oil filtration. In addition to INTERNORMEN replacement filters, we also produce PALL, PARKER, and Leemin series hydraulic filters, which are matched with mobile oil filter machine and coalescence dehydration filters to achieve integrated filtration of oil impurities and water.

Q5: What other filtering categories does the factory produce?

A: The source manufacturer covers industrial oil filtration, industrial water filtration, natural gas filtration, air filtration, and can produce imported replacement filters, domestic standard filters, and complete sets of filtration equipment. It supplies to multiple industries such as power, metallurgy, chemical, and gas.

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