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GB Series Full-Flow Ball Valves

Swagelok® Full-Flow Ball Valves (GB Series)

The bidirectional flow-capable Swagelok GB series full-flow ball valve is engineered to provide high flow rates at working pressure of 6000 psi (413 bar) in a variety of alloy materials, while simplifying installation, minimizing rework requirements, and delivering reliable shutoff performance.

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Improve Safety. Save Time. Manage Costs.

The Swagelok GB series ball valve provides value by reducing the time and cost required to install and verify the performance of components installed in high-flow industrial applications.

GB series ball valve

The valve is designed for quick, easy setup with bidirectional flow, eliminating concerns about backward installations. Integral Swagelok® tube fitting end connections that range in size from 3/8 to 1 in. further simplify system design and minimize labor and component requirements.

The potential for leaks or costly rework after initial installation is reduced through 100% assembly testing that ensures GB series ball valves meet specifications out of the box. Body seal performance is validated through hydrostatic system proof testing up to 1.5 times the maximum rated pressure.

The valve is built to allow simple customization, featuring a bolt pattern that can be used as an installation point for an optional lockout handle or panel mount, as well as a bracket compatible with an ISO 5211 pneumatic actuator. Having the ability to configure GB series ball valves as needed outside the factory makes it possible in some cases to streamline inventories of full-flow valves by stocking fewer SKUs.

Bringing Added Safety and Simplified Installation to High-Flow Applications

The Swagelok GB series full-bore, full-flow general purpose ball valve offers industry-leading performance in applications including hydraulic, injection, and fire suppression systems in the oil and gas industry; isolation for compressed natural gas (CNG) vehicle infrastructure; and isolation in highly corrosive alkylation operations in the chemical processing and petrochemical refining industry.

Capable of bidirectional flow to reduce the chance of improper installation, the valve is engineered to:

  • Provide high flow rates at working pressure of 6000 psi (413 bar)
  • Simplify installation
  • Minimize rework requirements
  • Deliver the reliable shutoff performance needed to keep workers safe and systems operating efficiently in a variety of demanding applications

Reliable Performance in Severe Applications

The GB series ball valve provides long-term benefit to owners and operators through features, materials, and design options that help protect workers and maximize component life in challenging conditions.

The valve features a patent-pending, mechanically locked end screw design that reduces risk of accidental disassembly or leakage. A proven leak-tight stem seal design with a blowout-proof stem provides additional reliability.

GB valve screw design

GB valve stem design

A variety of alloy materials, such as 6-Moly, Alloy 2507, Alloy C-276, Alloy 625, and Alloy 825, as well as standard Swagelok® 316/316L stainless steel are available to help reduce the risk of corrosion in harsh environments.

The GB series valve can be configured for sour gas service with materials of construction selected in accordance with NACE MR0175/ISO 15156. It will also comply with ASME B31.1 and B31.3 standards for power and process piping systems.

A fire-safe option is available that meets the testing specifications of API 607. This option features a standard red lever handle, Grafoil® flexible graphite packing, and a vented ball that allows pressure to equalize between the valve body and the upstream port to help prevent over-pressurization and potential seal blowout under fire conditions. With the vented ball, the valve is not bidirectional.


Working Pressure Up to 6000 psig (413 bar)
Temperature –40 to 250°F (–40 to 121°C)
Flow Coefficient 2.5 to 40
Body Materials 316/316L stainless steel, alloys 6-Moly, 2507, 625, 825, and C-276
Seat Materials PEEK
End Connections
Size 3/8 to 1 in.; 12 to 25 mm
Configurations On-off

GB Series Full-Flow Ball Valves Catalogs

Meet your specifications for pressure and flow in the most demanding applications with the GB series full-flow ball valve, available in two sizes (8GB and 16GB) with a wide range of flow rates and end connection types and sizes. Find detailed product information, including materials of construction, pressure and temperature ratings, options, and accessories in the product literature provided here.

Swagelok flow coefficient (C<sub>v</sub>) calculator for valves

The Right Valve Can Make All the Difference

Use our valve flow coefficient (Cv) calculator to choose a valve sized correctly for your needs.

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