Marine valves are specialized valves used in ships, offshore platforms, and other marine applications to control the flow of liquids and gases such as seawater, fuel, oil, ballast water, steam, and air. They are built to withstand corrosive environments, high pressures, and strict classification standards (like DNV, ABS, LR, BV).
Key Features:
- Corrosion-resistant materials (bronze, stainless steel, duplex, or special coatings)
- Compact design for limited space
- Compliance with maritime standards
- Some valves are fire-safe or anti-static
Common Types of Marine Valves:
| Valve Type | Function | Typical Use Case |
|---|
| Gate Valve | On/off control; full flow when open | Ballast systems, bilge lines |
| Globe Valve | Throttling and flow control | Cooling systems, steam lines |
| Ball Valve | Fast on/off, good sealing | Fuel systems, air lines |
| Butterfly Valve | Lightweight, for large pipe diameters | Seawater and ventilation systems |
| Check Valve | Prevents backflow | Bilge and overboard lines |
| Strainer Valve | Filters debris from fluids | Engine cooling intakes |
| Angle Valve | 90° flow change with throttling ability | Cooling, steam, and fuel supply |
Typical Marine Systems Using Valves:
- Ballast control
- Firefighting
- Engine cooling
- Fuel transfer
- Bilge and drainage