Product Overview
The KOZO C95800 Aluminum Bronze Triple Offset Butterfly Valve is designed for seawater, marine and offshore service where nickel-aluminum bronze construction and metal-seated quarter-turn isolation are required. Triple-offset geometry minimizes rubbing between the disc seal and seat during most of the travel, helping reduce wear in demanding cycling applications.
Why C95800?
ASTM B148 C95800 nickel-aluminum bronze is widely used in marine valves, pumps and seawater equipment. Final suitability depends on water chemistry, flow velocity, temperature and the complete valve material combination.
Key Design Features
- Triple-offset geometry: Reduces sliding contact between disc seal and seat.
- Metal-seat configuration: Suitable for demanding marine isolation service.
- C95800 body: Nickel-aluminum bronze for marine and compatible corrosive environments.
- Multiple pressure classes: Class 150/300/600 family.
- Manual or automated operation: Gear, pneumatic or electric actuation can be selected.
Technical Specifications
| Valve Type | Triple Offset Butterfly Valve |
|---|---|
| Body Material | ASTM B148 C95800 Nickel-Aluminum Bronze |
| Size Range | 2 in – 60 in |
| Pressure Classes | ASME Class 150 / 300 / 600 |
| Design Standard | API 609 / ASME B16.34 as applicable |
| Inspection & Testing | API 598 |
| Seat | Metal Seat |
| Body Style | Lug / project-specific options |
| Typical Service | Marine / Seawater / Offshore |
Typical Applications
- Seawater cooling systems
- Offshore utilities
- FPSO marine piping
- Desalination plants
- Ballast-water and marine auxiliary systems
Selection Notes
Operating-temperature capability must be based on the complete sealing system, shaft/trim, packing and pressure class. C95800 body material alone does not define the valve temperature limit.
How to Specify This Valve
Please provide size, class, medium, design pressure, temperature, body style, seat design, actuator and required inspection/certification.

