Product Overview
The KOZO WCB Top Entry Triple Offset Butterfly Valve combines triple-offset metal-seat geometry with top-entry maintenance access for severe industrial isolation. The top-entry structure is intended to improve access to internal sealing components in selected piping arrangements.
Triple Offset Principle
Three geometric offsets create a cam-like seating action so the disc seal remains clear of the seat through most of the stroke and contacts it primarily near final closure. This reduces rubbing compared with concentric or conventional double-offset designs.
Key Design Features
- Triple-offset metal-seat sealing geometry.
- Top-entry body arrangement for maintenance access.
- ASTM A216 WCB cast-steel body.
- Class 150 / 300 / 600 family.
- Gear, pneumatic or electric actuation options.
Technical Specifications
| Valve Type | Top Entry Triple Offset Butterfly Valve |
|---|---|
| Body Material | ASTM A216 WCB |
| Size Range | 2 in – 60 in |
| Pressure Classes | ASME Class 150 / 300 / 600 |
| Design Standard | API 609 |
| Inspection & Testing | API 598 |
| Seat | Metal Seat |
| Reference Temperature | -29°C to +425°C, configuration-dependent |
Typical Applications
- Chemical and petrochemical process lines
- Steam and thermal-fluid systems
- Power-generation service
- High-temperature industrial isolation
Selection Notes
The stated temperature range is configuration-dependent. Seat stack, packing, shaft, disc seal, bolting and pressure class must be reviewed together. Top-entry serviceability should also be confirmed against installation clearance.
How to Specify
Please provide size, class, medium, design temperature, body/trim material, seat design, connection/body style, actuator and testing requirements.
