Product Overview
The KOZO WCB High-Performance Double Offset Butterfly Valve is designed for compact industrial isolation where reduced disc/seat rubbing and quarter-turn operation are required. The double-offset geometry moves the disc away from the seat early in the opening stroke, reducing friction compared with a concentric butterfly valve.
Key Design Features
- Double-offset disc geometry.
- ASTM A216 WCB cast-steel body.
- Wafer, lug or flanged body options by configuration.
- Class 150 / 300 / 600 family.
- Gear, pneumatic or electric actuation.
Technical Specifications
| Valve Type | High-Performance Double Offset Butterfly Valve |
|---|---|
| Body Material | ASTM A216 WCB |
| Size Range | 2 in – 60 in family |
| Pressure Classes | ASME Class 150 / 300 / 600 |
| Design Standard | API 609 |
| Body Styles | Wafer / Lug / Flanged Options |
| Actuation | Gear / Pneumatic / Electric |
Typical Applications
- Industrial water and utilities
- Oil and gas utility systems
- Chemical process isolation where materials are compatible
- Cooling-water systems
- General industrial quarter-turn isolation
Double Offset vs Triple Offset
A high-performance double-offset valve commonly uses a resilient or polymer-based sealing system, while a triple-offset design typically uses metal-seated geometry for more severe temperature or pressure conditions. They should not be treated as interchangeable.
Selection Notes
Seat type, pressure class, fluid chemistry and temperature must be selected together. Actuator sizing should use the actual seating and dynamic torque for the chosen configuration.
How to Specify
Please provide size, class, medium, temperature, body style, seat material, trim, actuator and required testing standards.
