Pressure Balanced Lubricated Plug Valve (API 6D)
Pressure Balanced Lubricated Plug Valve (API 6D)
Chemoil Pressure Balanced Lubricated Plug Valves (API 6D) are engineered to provide reliable shut-off, smooth operation, and exceptional sealing performance for high-pressure pipeline and process applications. Designed in accordance with API 6D standards, these valves incorporate a pressure-balanced plug mechanism that significantly reduces operating torque while maintaining bubble-tight sealing under demanding service conditions.
Unlike conventional lubricated plug valves, the pressure-balanced design minimizes friction between the plug and body by balancing the upstream pressure acting on the plug. This results in easier operation, reduced actuator sizing, extended valve life, and superior performance in high-pressure and high-temperature applications.
Manufactured using premium materials, precision machining, and advanced sealing technology, Chemoil Pressure Balanced Lubricated Plug Valves are widely used in oil & gas transmission, refineries, petrochemical plants, LNG facilities, chemical processing, power generation, and pipeline systems where dependable isolation and operational safety are essential.
Key Features
- ✔️ Designed in accordance with API 6D
- ✔️ Pressure-balanced plug design
- ✔️ Quarter-turn operation
- ✔️ Bubble-tight shut-off performance
- ✔️ Low operating torque
- ✔️ Sealant injection system
- ✔️ Blowout-proof stem
- ✔️ Fire-safe construction available
- ✔️ Anti-static device
- ✔️ Full Port and Reduced Port options
- ✔️ Bi-directional sealing
- ✔️ Heavy-duty construction for severe service
- ✔️ Long service life
- ✔️ Automation-ready design
Technical Specifications
| Parameter | Details |
|---|---|
| Size Range | 2″ - 36″ (DN50 - DN900) |
| Pressure Class | ASME Class 150# - 2500# |
| Temperature Range | -29°C to +230°C (up to +400°C with high-temp sealant) |
| Body Materials | Carbon Steel (WCB, LCB, A105), Stainless Steel (CF8M, CF3M), Alloy Steel |
| Plug Materials | Carbon Steel + ENP, F316 + Stellite overlay, Duplex SS |
| Balancing System | Pressure balanced channels with top and bottom chambers |
| Sealing System | Pressurized grease sealant system via injection fitting |
| End Connections | Flanged (ASME B16.5), Butt Weld (ASME B16.25) |
| Design Standards | API 6D, API 599, ASME B16.34 |
| Face-to-Face | API 6D, ASME B16.10 |
| Testing Standards | API 6D, API 598, ISO 5208 |
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