Product Overview
The KOZO 904L Stainless Steel Swing Check Valve is designed for corrosive chemical and acid-handling systems requiring automatic backflow prevention and UNS N08904 / 904L construction.
Why 904L?
904L is a high-alloy austenitic stainless steel containing elevated nickel, chromium and molybdenum with copper additions. It is used in selected acid and chloride-containing environments where conventional 316L may not provide sufficient corrosion margin.
Key Design Features
- 904L / UNS N08904 pressure-containing construction.
- Swing-disc automatic non-return operation.
- Flanged or butt-weld connection options.
- Project-specific disc, hinge and seat materials.
Technical Specifications
| Valve Type | Swing Check Valve |
|---|---|
| Body Material | 904L / UNS N08904 |
| Operation | Automatic Non-Return |
| End Connection | 法兰式 / Butt Weld |
| Typical Service | Corrosive Chemical / Acid Service |
Typical Applications
- Acid transfer lines
- Chemical processing
- Fertilizer systems
- Corrosive process utilities
Selection Notes
Material suitability depends on concentration, 温度, pressure and contaminants. Valve orientation, disc travel and minimum flow should also be considered for stable operation.
How to Specify
Please provide size, class, medium, concentration, 温度, end connection, disc/seat materials and quantity.
