Description
Schego M2k3 / Ws3 Air Filter Felt (4pcs) — Four intake filters for Schego M2K3 and WS3 air pumps
Pumps that aerate transport tubs and bait tanks often sit in garages and sheds, which is where intake felts clog fastest. Schego M2k3 / Ws3 Air Filter Felt (4pcs) (SKU: SH744) is a pack of four replacement filter felts for the Schego M2K3 and WS3 air pumps. The felt is the pre-filter on the pump’s intake: it stops dust and fibres from reaching the diaphragm and valves, and it is the cheapest part of the pump to renew. Schego lists easily replaceable pre-filters among the features of its pumps, and a retailer listing describes these as original spare filters for the M2K3 and WS3.
The M2K3 and WS3 are the two largest pumps in the Schego range, at 300 L/h (M2K3, no head) and 350 L/h (WS3), and the WS3 is intended for at least 3 m of water column. A blocked felt lowers the output of any membrane pump, and a pump working against back-pressure has the least air to spare. Schego does not publish a replacement interval for these felts, so a visual check is the better guide, particularly in dusty rooms: a grey or matted pad is due for changing. The felt dimensions are not published either, so compare the new pad with the old one on fitting. If a fresh felt does not restore airflow, the diaphragm set (SH742) is the next part to try, followed by the air chamber and diaphragm kit (SH743).
Usage & Application
When to Use
- Dusty locations: Garages, sheds and fish rooms where fibres and dust settle on the pump.
- Routine inspection: Look at the felt whenever the pump is moved or cleaned.
- Reduced airflow: The cheapest fix to try first on an M2K3 or WS3.
- Several pumps: A pack of four covers a small battery of M2K3 units.
Installation & Replacement Guide
- Power off: Unplug the pump and disconnect the airline.
- Reach the intake: Open the housing to find the felt filter at the air inlet.
- Replace the felt: Lift out the old pad and place a new one flat in the same seat.
- Verify: Close the housing, restart and check the airflow at the outlet.
Product Specifications & Highlights
Key Features
- Four felts: Several service intervals in one pack.
- Two pump models: Listed for the M2K3 and the WS3.
- Intake protection: Keeps dust off the diaphragm and valves.
- Original spare: Described as such by the retailer listing.
- Low-cost upkeep: The lightest service job on these pumps.
Product Details
- Brand: Schego (Schemel & Goetz, Germany)
- SKU: SH744
- Barcode (GTIN/EAN): 4005256007441
- Product Type: Spare Parts > Air Pump Filter Felt
- Quantity: 4 felt filters
- Fits: Schego M2K3 and WS3 air pumps
- Pump Outputs: M2K3 300 L/h at 0 m; WS3 350 L/h
- Companion Parts: Diaphragm set (SH742); air chamber and diaphragm kit (SH743); reed arm (SH745)
- Target Environment: Freshwater and marine aquariums and skimmers aerated by Schego M2K3 or WS3 pumps





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