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SK Series Multipurpose Ball Valves

Swagelok® Multipurpose Ball Valves (SK Series)

Swagelok SK series multipurpose ball valves offer low-torque, quarter-turn operation in a compact design, providing positive shutoff in applications up to 6000 psig (413 bar). Low emissions certification per API 624 is available.

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Swagelok SK series multipurpose ball valves provide high flow capacity and low-torque, quarter-turn actuation in a compact design. Designed for use in applications up to 6000 psig (413 bar), these valves feature bidirectional flow, flow coefficients ranging from 0.9 to 1.4, a variety of end connections (Swagelok gaugeable tube fitting, NPT and ISO pipe, and Swagelok male VCO® end connections), standard panel mounting capabilities, and field rebuildability with a seal kit. Low-temperature SK series valves are also available, as well as low-E valve certification per API 624.

SK series ball valves have O-ring stem seals that require no packing adjustment and provide leak-tight seal to atmosphere. Spring-loaded PEEK seats provide chemical compatibility and leak-tight integrity in both low- and high-pressure systems. A directional handle indicates flow direction and open/closed position, and a stainless steel floating ball design reduces wear and extends cycle life.


Working Pressure Up to 6000 psig (413 bar)
Temperature –40 to 302°F (–40 to 150°C)
Flow Coefficient Up to 1.4
Body Materials 316 stainless steel
Seat Materials PEEK
End Connections
Type Swagelok tube fitting, NPT, ISO pipe, and male VCO®
Size 1/4 and 3/8 in.; 6 and 8 mm
Configuration On-off

SK Series Multipurpose Ball Valves Catalogs

Locate detailed product information, including materials of construction, pressure and temperature ratings, options, and accessories.

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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Learn more about Swagelok® multipurpose SK series ball valves, a line of high-pressure, high-flow valves with a compact design. SK series valves offers low-torque, quarter-turn operation, providing positive shutoff in applications up to 6000 psig (413 bar).

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