Monel 400 y-strainer screens combines the construction of y-strainer screens (Y-strainer OEM replacement) with the properties of UNS N04400 (2.4360): excellent resistance to seawater, hydrofluoric acid and alkalis, slightly magnetic, service to approx. +540 °C. This page summarizes the grade data, its behavior in filtration service, comparable alloys, and the specifications supplied.
Why Choose Monel 400 for Y-Strainer Screens
The marine and chemical-processing specialist alloy. For y-strainer screens, this matters when excellent resistance to seawater, hydrofluoric acid and alkalis is the controlling requirement.
Alloy Properties
| Grade designation | UNS N04400 (2.4360) |
|---|---|
| Magnetic response | Slightly magnetic |
| Service temperature | approx. +540 °C |
| Corrosion characteristic | Excellent resistance to seawater, hydrofluoric acid and alkalis |
Corrosion Behavior in Filtration Service
Nickel-family alloys are specified for y-strainer screens when stainless is not enough: Monel 400 for seawater and hydrofluoric acid, Inconel 600 for oxidation at extreme temperature, Hastelloy C-276 for hot chlorides and mixed acids, titanium for chlorides with weight savings. Match the alloy to the specific chemistry — they are not interchangeable.
Cleaning & Compatibility
Special alloys tolerate aggressive cleaning chemistry, but confirm the specific acid/alkali against the alloy datasheet — e.g. Monel handles HF but not oxidizing nitric; titanium handles nitric but not HF. When welding elements into frames, use matching filler and inert-gas backing to preserve corrosion resistance at the joint.
Specifications of Y-Strainer Screens Available in Monel 400
| Nominal pipe size | Screen mesh | Material | Style | Reference standard |
|---|---|---|---|---|
| DN15 (1/2 in) | 20-Mesh | SS304 / SS316 | Cylindrical insert | Y-strainer replacement |
| DN25 (1 in) | 20-Mesh / 40-Mesh | SS304 / SS316 | Cylindrical insert | Y-strainer replacement |
| DN50 (2 in) | 20-Mesh / 40-Mesh | SS304 / SS316 | Cylindrical insert | Y-strainer replacement |
| DN80 (3 in) | 20-Mesh / 40-Mesh | SS304 / SS316 | Cylindrical insert | Y-strainer replacement |
| DN100 (4 in) | 10-Mesh to 40-Mesh | SS304 / SS316 | Cylindrical insert | Y-strainer replacement |
Where Monel 400 Y-Strainer Screens Is Used
- HVAC & water: chiller, boiler and condenser Y-strainers.
- Steam systems: steam trap and control valve protection.
- Process plants: chemical and solvent lines.
- Fuel & oil: burner and transfer pump lines.
Ordering Y-Strainer Screens in Monel 400
- Body size & make: Screen OD and length must match the Y-strainer body exactly.
- Perforation & mesh: Perforated screen, with a mesh liner (20–100 mesh) for finer straining.
- Material: SS304 or SS316 for most fluids; Monel for sea water.
Mistakes to Avoid with Y-Strainer Screens
- Ordering a screen by pipe size alone when different body makes vary.
- Fitting too fine a liner on steam lines, which blinds with scale.
