Friedrichs Dual Switching Filter 4.225 Series

Friedrichs Dual Switching Filter 4.225 Series

‌1、 Product Overview‌

• ‌product name‌：fluidtech ® Dual switching filter, series 4.225.

• ‌Main functionsUsed for separating impurity particles from specific media (such as lubricating oil), designed for continuous filtration.

• ‌working principleAdopting a dual filter chamber design, usually one filter chamber is in operation and the other is backup. When the filter element is heavily contaminated during operation, it can be manually switched to the backup filter element, and the overlapping switching operation between the two filter chambers can ensure uninterrupted flow of the medium. After switching, the contaminated filter element needs to be removed, cleaned, or replaced and reinstalled to prepare for the next switch.

‌2、 Design data‌

1. ‌Size and flow rate‌：

• ‌Nominal diameter (DN)‌：20

• ‌Length codeL1 (standard length)

• ‌Flow rate (V)70 liters per minute (calculated based on the recommended maximum flow rate of 3 meters per second at the nominal diameter)

• ‌Single filter element filtration area: 434 square centimeters

• ‌Weight of air filter (including filter element): 3.2 kilograms

2. ‌operating parameters‌：

• ‌Maximum work pressure‌： 16 bar

• ‌Maximum operating temperature‌： 120°C

• ‌Detailed traffic dataPlease refer to a separate data sheet (4.221-KV).

3. ‌material‌：

• ‌Shell, switching element, and cover‌： GK-Al

• ‌filter elementPlease refer to the separate data table (filter elements_4.121_221_225-TDB) for details

• ‌sealing elementThe standard material is NBR, and FPM is optional. Special materials can be provided upon request.

4. ‌Differential pressure indicator: Standard equipment deltaP ® Differential pressure indicator (model 5.02, see separate data sheet for details), other models can be provided upon request.

‌3、 Installation and fixation‌

• The differential pressure indicator can read in both installation positions.

• The filter is only fixed by the flange on the connecting pipe and is not designed to be separately fixed to the housing.

Friedrichs Dual Switching Filter 4.225 Series