COMPACT BODY (TWIN BALL) TRUNNION BALL VALVE
GWC USA
The GWC USA Compact Body (Twin Ball) Trunnion Ball Valve delivers true double block and bleed by housing two trunnion mounted ball valves in a single body. The two balls replace a pair of separate valves and the spool between them, cutting face-to-face length, weight, and installed cost.
The space between the two balls carries a drain valve, so the upstream and downstream sides are completely isolated with a verifiable vent point. Each ball keeps the full side entry feature set, including independent seat rings, piston effect seats, and soft or metal seats, with any type of actuation.
Available in sizes 1" through 36" and ASME Class 150 through 2500, the valve is designed to API 6D and built to ASME B16.34. Full and reduced bore, firesafe seats, sealant injection, and NACE MR-01-75 construction complete the package.
Typical Applications:
Double block and bleed service, metering and custody transfer skids, pipelines and gathering systems, space and weight constrained installs, offshore and onshore facilities, and manual or automated block service.
Key Features
- Model FC compact twin ball body
- Sizes 1" through 36"
- ASME 150 to 2500
- Designed to API 6D, ASME B16.34
- Two ball valves in a single body
- Integral drain valve between balls
- Complete upstream and downstream isolation
- Full and reduced bore
- Trunnion mounted balls
- Floating independent seat rings
- Single or double piston effect seats
- Soft or metal seats
- Reduced face to face, weight, and cost
- Spring loaded seats, firesafe
- Any type of actuation
- NACE MR-01-75 compliant
PERFORMANCE ADVANTAGES
Why the GWC Compact Body (Twin Ball) Trunnion Ball Valve
Performs where it counts.
TWO VALVES IN ONE BODY
Housing two balls in a single body delivers true double block and bleed without installing two separate valves and a connecting spool. That removes flanges, gaskets, and leak paths from the run.
REDUCED FACE-TO-FACE, WEIGHT, AND COST
The compact body shortens the installed length and cuts weight compared with two valves in series, easing support and installation. Material and installation costs drop while isolation capability stays the same.
VERIFIABLE ISOLATION WITH INTEGRAL DRAIN
The drain valve between the two balls isolates the upstream and downstream sides completely and provides a vent point to confirm the seal. That supports safe maintenance and custody transfer without added fittings.
FULL SIDE-ENTRY FEATURE SET PER BALL
Each ball keeps the complete feature set of a side entry valve, including independent seat rings, piston effect seats, and soft or metal seats. The compact design gives up nothing in sealing capability or configurability.
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