Multipurpose Ball Valves—SK Series
Swagelok® SK series ball valves offer low-torque, quarter-turn operation in a compact design providing positive shutoff in applications up to 6000 psig (413 bar).

Specifications Working Pressure Temperature Flow Coefficient Body Material Seat Material End Connections •  Type      •  Size Configuration

Up to 6000 psig (413 bar) –40 to 302°F (–40 to 150°C) Up to 1.4 316 stainless steel PEEK Swagelok tube fitting, NPT and ISO, VCO® O-ring seal fittings 1/4 and 3/8 in.; 6 and 8 mm On-off

• Spring-loaded PEEK seats:
• provide chemical compatibility
• provide leak-tight integrity in both low- and high-pressure systems
• O-ring stem seal:
• requires no packing adjustment
• provides leak-tight seal to atmosphere
• Stainless steel floating ball reduces wear and extends cycle life
• Directional handle:
• offers quarter-turn operation
• indicates flow direction
• indicates open/closed position
• Standard panel mounting
• Bidirectional flow
• Field rebuildable with seal kit

Testing
Every Swagelok SK series ball valve is factory tested in both flow directions with nitrogen at 1000 psig (69 bar). Seats have a maximum allowable leak rate of 0.1 std cm³/min. Shell testing is performed to a requirement of no detectable leakage with a liquid leak detector.

Cleaning and Packaging
All Swagelok SK series ball valves are cleaned and packaged in accordance with Swagelok Standard Cleaning and Packaging (SC-10). Cleaning and packaging in accordance with Swagelok Special Cleaning and Packaging (SC-11) is available.

Options

• Pneumatic actuators and ISO 5211-compliant pneumatic actuators
• Solenoid valves
• Position indicators
• Limit switches
• ISO 5211-compliant mounting bracket kits
• Electric actuators
• Oval, stainless steel directional, and locking bracket handle options
• Mixed end connections
• Hydrostatic testing
• Buna C O-rings for low-temperature service to –40°F (–40°C) 
• PTFE-coated stainless steel ball 
• Sour gas service