The Piggable Valve (Full Bore Ball Valve for Pigging) is specifically designed for pipeline pigging systems. To ensure pigs pass smoothly without jamming or damage risks, its bore must perfectly match the connecting pipeline’s inner diameter. This valve provides an unobstructed pigging path and reliable pipeline isolation, typically featuring a single flow path (inlet/outlet) with bidirectional or unidirectional sealing. When configured as a three-way valve, the main pipeline direction maintains full-bore design.
Key Functions
- Pig Passage: Provides an obstruction-free flow path for pigs when open
- Pipeline Isolation & Segmentation: Functions as a high-performance isolation valve when closed, reliably separating pipeline systems into independent sections
- Pig Isolation: Confines pigs within designated chambers (e.g., launcher/receiver barrels) during operations, separating them from main process media
Key Features & Advantages
- Reliable Isolation: Ball valve structure ensures excellent sealing performance with zero leakage when closed
- Pigging-Optimized Design: Internal components (seats, ball bore) are engineered to withstand pig impact while minimizing trapping points, significantly reducing product retention
- Material Versatility: Multiple body and seal materials available for diverse operating conditions (pressure, temperature, media corrosiveness)
Typical Installation & Applications
Primary Installation Locations:
- Launching Station: Most common installation point. Installed between launcher barrel and main pipeline. Critical function: Closing isolates pigs within launcher barrels, preventing contact with process media for clean operation and pressurization. Opens during launch.
- Receiving Station: Positioned between receiver barrel and main pipeline. Isolates arriving pigs for safe retrieval and residue discharge
- Critical Pipeline Isolation Points: Locations requiring full-bore flow and reliable shutoff for pipeline segmentation
Application Value:
- Ensures Uninterrupted Pigging: Guarantees pig passage through valves – fundamental to effective pigging systems
- Enables Pig Isolation: Protects pigs from contamination (especially at launch), ensuring functionality and reusability
- Provides Secure Isolation: Critical shutoff points for operational safety and segment maintenance
With its full-bore design and reliable isolation performance, the Piggable Valve is essential for smooth pig transit, effective pig isolation, and pipeline segmentation in pigging systems. Proper valve selection and application are critical for optimizing pigging efficiency, minimizing product retention, and enhancing pipeline safety and operational economy.
