Application guide for Formed Etched Cup Filter to Photo-chemical machining to drawing (ISO 2768-f). The core duty of the type is 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 typical industries, the how-to-specify checklist, handling practice and the exclusion cases are set out below.
Typical Applications for Formed Etched Cup Filter
Where Formed Etched Cup Filter is specified and bought:
- 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.
How to Specify Formed Etched Cup Filter for Your Application
- 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.
- Standard: Quote Photo-chemical machining to drawing (ISO 2768-f) and the size designation from the table on the product page, plus any value you changed in the technical drawing.
Handling & Installation Practice
- Press-fit with a matching tool so the cup wall is not crushed.
- Inspect a sample of cups for hole distortion after forming.
Common Selection Mistakes with Formed Etched Cup Filter
- Placing holes in the bend zone, where forming stretches them.
- Press-fitting by hand, which buckles the cup.
Where Formed Etched Cup Filter Is Not the Right Choice
Not for high dirt loads; a larger cartridge or basket gives more area.
