Product Overview
The KOZO Alloy 20 Triple Offset Butterfly Valve is designed for corrosive chemical and industrial isolation service where Alloy 20 construction and metal-seated triple-offset geometry are required. The third offset creates a cam-like sealing motion that minimizes rubbing between the disc seal and seat during most of the stroke.
Why Alloy 20?
Alloy 20 is used in selected sulfuric-acid and chemical environments where improved resistance over conventional stainless steels is required. Final suitability depends on concentration, température, contaminants and the complete valve material combination.
Key Design Features
- Triple-offset geometry: Reduced sliding contact and wear.
- Alloy 20 body/trim options: For selected corrosive chemical service.
- Metal-seat configuration: Suitable for severe service and elevated temperature.
- API 609 design: Reference butterfly-valve standard.
- Manual or automated actuation: Gear, pneumatic or electric packages available by configuration.
Technical Specifications
| Valve Type | Triple Offset Butterfly Valve |
|---|---|
| Reference Material | Alloy 20 |
| Gamme de tailles | 2 in – 60 in |
| Pressure Classes | ASME Class 150 / 300 / 600 |
| Design Standard | API 609 / ASME B16.34 as applicable |
| Inspection & Testing | API 598 |
| Siège | Metal Seat |
| Reference Temperature | -29°C to +425°C, configuration-dependent |
Typical Applications
- Chemical processing
- Acid-handling systems
- Corrosive process isolation
- High-temperature industrial service where Alloy 20 is compatible
Selection Notes
The stated temperature range is configuration-dependent. Seat stack, packing, shaft, trim and pressure class should be evaluated together.
How to Specify This Valve
Please provide size, class, medium, concentration, design temperature, body/trim material, seat design, connection/body style, actuator and testing requirements.
