Formed Etched Cup Filter in 316L Stainless Steel (AISI 316L (1.4404)) is used for filtering at valve, pump and injector inlets with tiny cups deep-drawn from etched metal foil, combining precise etched holes with a cup shape that adds filter area and press-fits into a bore. 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) |
|---|
| Magnetic response | Essentially non-magnetic |
|---|
| Service temperature | approx. +550 °C continuous |
|---|
| Corrosion characteristic | Superior resistance, including chlorides, brines, food CIP and mild acids |
|---|
Specifications of Formed Etched Cup Filter Available in 316L Stainless Steel
| Size | Top diameter (mm) | Depth (mm) | Hole diameter (mm) | Thickness (mm) | Use |
|---|
| Cup 6 | 6 | 4 | 0.08 | 0.05 | Injector inlet |
| Cup 10 | 10 | 8 | 0.10 | 0.08 | Pump inlet |
| Cup 20 | 20 | 15 | 0.15 | 0.10 | Appliance valve |
Where 316L Stainless Steel Formed Etched Cup Filter Is Used
- Fuel systems: injector and fuel-pump inlet cups.
- Appliance valves: washing machine, dishwasher and coffee machine water inlets.
- Medical pumps: inlet filters in infusion and dosing pumps.
- Pneumatics: valve inlet filters.
Ordering Formed Etched Cup Filter in 316L Stainless Steel
- Size: 6–20 mm diameter cups with depth to suit the bore.
- Holes: 0.08–0.15 mm etched holes, laid out so forming does not distort them.
- Material: SS304 or SS316L foil, 0.05–0.1 mm.
Mistakes to Avoid with Formed Etched Cup Filter
- Placing holes in the bend zone, where forming stretches them.
- Press-fitting by hand, which buckles the cup.
