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
• ECE R110-type approval valves available

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

Certifications and Approvals
SK series ball valves are available with ECE R110-type approval for use in alternative fuel service. Valves with this approval have ultralow-temperature fluorocarbon / D2000 stem O-rings.

• Temperature rating: –40 to 248°F (–40 to 120°C)
• Pressure rating within the range: 3770 psig (260 bar)

See the ECE R110 approval document.
See all alternative fuels certifications and approval documents.