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316 Stainless Steel7.2 CvHigh PressureCNG/HydrogenECE R110NGV 3.1

Swagelok SS-AFSS8 / AFS Series High Pressure Alternative Fuel Service Ball Valve

Swagelok SS-AFSS8 is a 3-piece high pressure ball valve for alternative fuel service (AFS). Features 316 stainless steel, 1/2 in. tube fittings, 7.2 Cv, and ECE R110/NGV 3.1 approvals.

Swagelok SS-AFSS8 / AFS Series High Pressure Alternative Fuel Service Ball Valve

Swagelok SS-AFSS8 is a 3-piece high-pressure ball valve specifically designed for alternative fuel service (AFS). Part of the multipurpose AFS series, this 2-way straight pattern valve provides a flow coefficient (Cv) of 7.2 and is engineered to meet the rigorous demands of compressed natural gas (CNG), hydrogen, and other high-flow general industrial applications where higher pressures are required.

The valve features a 316 stainless steel body and 1/2 in. Swagelok tube fitting end connections. Its design ensures low operating torque and eliminates the need for manual packing adjustment. The AFS series is low-emissions certified and provides reliable shut-off for gaseous fuel systems.

Key Features

  • Alternative Fuel Compatibility: Specifically designed and compatible with hydrogen and compressed natural gas (CNG).
  • High Flow Performance: Optimized 2-way straight pattern with a 7.2 Cv rating to support high-flow requirements.
  • Low Maintenance: Features a design that requires no packing adjustment during its service life.
  • Durable Construction: Built with a 316 stainless steel body for corrosion resistance and directional black handles for easy operation.

Technical Specifications

PropertyDetails
Model NumberSS-AFSS8
Body Material316 Stainless Steel
Flow Pattern2-Way Shutoff Straight
Max Cv7.2
End Connection 11/2 in. Swagelok® Tube Fitting
End Connection 21/2 in. Swagelok® Tube Fitting
Handle StyleDirectional, Black
Low EmissionsCertified (Yes)
Cleaning ProcessStandard Cleaning and Packaging (SC-10)

Certifications and Approvals

The AFS series ball valves are approved for use in alternative fuel systems according to international standards:

  • ECE R110
  • NGV 3.1
  • NGV 4.6

INFO

AFS 2-way ball valves can achieve flow coefficients up to 13.8 across the wider series, depending on the specific model and configuration.

WARNING

Proper selection and system design are essential for safety. System designers must consider material compatibility, pressure ratings, and installation requirements for hydrogen and CNG service.