DEF / AdBlue Tank & Pump Filter in 316L Stainless Steel (AISI 316L (1.4404)) is used for filtering diesel exhaust fluid (DEF / AdBlue) in SCR systems so urea crystals and debris do not block the pump and dosing injector. The alloy gives superior resistance, including chlorides, brines, food CIP and mild acids and is essentially non-magnetic, with a practical service limit of approx. +550 °C continuous.
Alloy Properties
| Grade designation | AISI 316L (1.4404) |
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| Magnetic response | Essentially non-magnetic |
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| Service temperature | approx. +550 °C continuous |
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| Corrosion characteristic | Superior resistance, including chlorides, brines, food CIP and mild acids |
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Specifications of DEF / AdBlue Tank & Pump Filter Available in 316L Stainless Steel
| Size | Outer diameter (mm) | Length (mm) | Micron rating (u00b5m) | Media |
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| Tank sock | 40 | 80 | 40 | SS316L twill dutch |
| Pump inlet | 25 | 35 | 30 | SS316L sintered mesh |
| Dosing module | 18 | 28 | 10 | SS316L sintered fiber |
Where 316L Stainless Steel DEF / AdBlue Tank & Pump Filter Is Used
- Truck & bus OEMs: DEF tank and pump filters.
- Off-highway equipment: SCR filtration on tractors and machinery.
- Aftermarket service: replacement DEF filters.
- DEF dispensing: nozzle and pump filters at fueling stations.
Ordering DEF / AdBlue Tank & Pump Filter in 316L Stainless Steel
- Material: Only SS316L or plastics compatible with ISO 22241; ordinary steels contaminate DEF.
- Rating: 10–40 µm depending on position.
- Freeze tolerance: Must survive repeated freezing of DEF.
Mistakes to Avoid with DEF / AdBlue Tank & Pump Filter
- Using non-316 metal parts, which corrode in urea.
- Topping up from dirty containers.
