Product Overview
The KOZO DIB-1 / DIB-2 Trunnion Ball Valve is intended for pipeline and process isolation where double-isolation-and-bleed seat arrangements are specified. The reference configuration uses a 24 in Class 300 ASTM A350 LF2 split-body trunnion valve with Devlon seats and RF flanged ends.
DIB-1 vs DIB-2
DIB-1: both seats are double-piston-effect (DPE) seats.
DIB-2: one seat is single-piston-effect (SPE) and the opposite seat is double-piston-effect (DPE).
The exact seat orientation and cavity-pressure behavior must be confirmed from the approved valve drawing and project philosophy.
Key Design Features
- Trunnion-mounted ball for stable operating torque.
- Split-body construction for maintainability.
- DIB-1 or DIB-2 seat philosophy according to project requirement.
- Cavity bleed and pressure-management provisions.
- API 6D reference design family.
Technical Specifications
| Valve Type | DIB Trunnion Ball Valve |
|---|---|
| Reference Size | 24 in |
| Pressure Rating | ASME Class 300 |
| Body Material | ASTM A350 LF2 |
| Seat | Devlon Reference |
| End Connection | RF Flanged |
| Design Standard | API 6D |
| Seat Philosophy | DIB-1: DPE + DPE; DIB-2: SPE + DPE |
Typical Applications
- Oil and gas pipelines
- Pipeline sectional isolation
- Terminal and tank-farm service
- Process systems requiring cavity bleed verification
Selection Notes
DIB terminology should not be treated as interchangeable with DBB. Seat direction, cavity relief, thermal expansion and bleed arrangement should be confirmed from the approved design drawing before ordering.
How to Specify This Valve
Please provide size, pressure class, DIB-1 or DIB-2 requirement, seat direction, body/trim material, medium, temperature, bleed/vent arrangement, fire-safe requirement and actuator/operator.
