Fitted on the coolant return line, upstream of the pump or stack inlet
Coolant Particle Filter
SUS316L screen · 125 μm · −40…+100 °C

Overview
A stainless-steel screen filter fitted in the coolant line to take fine particles out of the loop before they reach the stack or the cooler. The 316L screen holds contamination down to 125 μm at a pressure drop of a few kPa, and the body is compatible with water-glycol coolant over −40 °C to +100 °C.
Key features
- Working range −40 °C to +100 °C
- Large dirt-holding capacity, low pressure drop
- SUS316L corrosion-resistant stainless steel screen
- Compatible with ethylene-glycol heat transfer fluids
- Simple to install in the line
Technical data
Specifications
| Item | Specification |
|---|---|
| Media | Coolant — water or water-ethylene glycol mixture |
| Working temperature | −40 °C to +100 °C |
| Filter material | SUS316L corrosion-resistant stainless steel screen |
| Filtration accuracy | 120 mesh (125 μm) |
| Pressure resistance | > 4 bar |
| Volume conductivity | < 5 μS/cm |
Model selection
| Model | Connection size | Flow range | Flow resistance |
|---|---|---|---|
| F1038 | Inlet Φ38 mm / outlet Φ38 mm | 0 – 150 L/min | < 5 kPa @ 100 L/min, 30 °C |
| F1050-1 | Inlet Φ50 mm / outlet Φ50 mm | 0 – 300 L/min | < 11 kPa @ 200 L/min, 30 °C |
Port size, screen mesh and end connections are confirmed against the drawing at order.
Where it is used
Keeps the radiator core and stack channels free of debris
From the engineering notes
Background on the design decisions behind this component — all articles.
Cooling architecture and the insulation question
Why the coolant loop and the electrical barrier must be designed together, and which components keep them apart.
Isolated DC-DC first, then the coolant piping
The 100 Ω/V and 500 Ω/V rules come from touch-safety limits, not from the converter. Worked numbers for a 500 V stack on an 800 V bus, and what they mean for hose length and rigid tube.
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