Marine Raw-Water Sea Strainer Basket in Monel 400 (UNS N04400 (2.4360)) is used for protecting marine engine raw-water pumps, generators and air-conditioning from weed, shells and debris with a removable sea strainer basket. The alloy gives excellent resistance to seawater, hydrofluoric acid and alkalis and is slightly magnetic, with a practical service limit of approx. +540 °C.
Alloy Properties
| Grade designation | UNS N04400 (2.4360) |
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| Magnetic response | Slightly magnetic |
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| Service temperature | approx. +540 °C |
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| Corrosion characteristic | Excellent resistance to seawater, hydrofluoric acid and alkalis |
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Specifications of Marine Raw-Water Sea Strainer Basket Available in Monel 400
| Size | Basket diameter (mm) | Depth (mm) | Hole diameter (mm) | Material |
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| 3/4 in | 60 | 100 | 2.0 | Monel 400 |
| 1 1/4 in | 80 | 150 | 2.5 | SS316 |
| 2 in | 110 | 200 | 3.0 | SS316 |
Where Monel 400 Marine Raw-Water Sea Strainer Basket Is Used
- Recreational boats: engine raw-water strainers below the waterline.
- Commercial vessels: generator and main-engine cooling water.
- Yachts: seawater air-conditioning and watermaker intakes.
- Marine OEMs: baskets for strainer bodies.
Ordering Marine Raw-Water Sea Strainer Basket in Monel 400
- Body size: Basket must fit the strainer model and inlet size.
- Holes: 2–3 mm perforation stops weed and shells.
- Material: Monel 400 or SS316; SS304 pits in seawater.
Mistakes to Avoid with Marine Raw-Water Sea Strainer Basket
- Running with a blocked basket, which overheats the engine and destroys the impeller.
- Fitting a 304 basket that corrodes within a season.
