SIST EN ISO 14469:2017 PDF

Overview

EN ISO 14469:2017 / ISO 14469:2017 specifies requirements for compressed natural gas (CNG) refuelling connectors used on road vehicles. The standard covers nozzles and receptacles built entirely from new parts and materials and defines standardized mating components to ensure safe, interoperable CNG refuelling. It applies to connectors designed for service pressures of 20 MPa (200 bar) and 25 MPa (250 bar), with size designations:

• Size 1: B200 and B250
• Size 2: C200 and C250

The standard is published by ISO and adopted by CEN as EN ISO 14469:2017, supporting harmonized CNG refuelling interfaces across Europe and internationally.

Key topics and technical requirements

EN ISO 14469:2017 addresses both design and verification aspects of CNG refuelling connectors, including:

• General construction requirements for nozzles and receptacles intended for CNG service.
• Standard receptacle and nozzle dimensions to ensure mechanical compatibility between mating parts.
• Service pressure compatibility - preventing a vehicle from being fuelled by dispensers with pressures higher than the vehicle’s fuel system rating while allowing equal or lower-pressure dispensers.
• Marking and instructions requirements to support safe use and maintenance.
• Comprehensive tests covering:
  • Leakage (room temperature and temperature extremes)
  • Impact resistance and deformation
  • Durability cycling and seal compatibility
  • Hydrostatic strength and corrosion resistance
  • User interface operation, torque, rocking/twisting, and abnormal load behaviour
  • Pressure-tight protective cap (PTPC) performance and non‑igniting evaluation

(These test categories are defined in the standard to validate safety and functional performance.)

Applications

EN ISO 14469:2017 is used to:

• Design and validate CNG vehicle refuelling ports and dispenser nozzles for safe interoperability.
• Certify CNG nozzles and receptacles for compliance with international and European requirements.
• Guide manufacturers in material selection, dimensional control, and durability testing for CNG connectors.
• Reduce risk of overpressure fueling and improve refuelling safety at public and private CNG stations.

Keywords: CNG refuelling connector, CNG nozzle, CNG receptacle, 20 MPa, 25 MPa, B200, B250, C200, C250.

Who uses this standard

• Vehicle OEMs and subsystem suppliers (fuel systems)
• CNG dispenser and nozzle manufacturers
• Testing laboratories and certification bodies
• Regulatory authorities and standards committees
• Fleet operators and infrastructure developers implementing CNG refuelling networks

Related standards

• ISO 15403‑1 and ISO 15403‑2 (reference fuels for CNG) - the EN ISO 14469:2017 scope explicitly requires compatibility with CNG defined in these standards.
• Developed under ISO/TC 22 (Road vehicles) / SC 41 (gaseous fuels) and adopted by CEN for use across member countries.

For design, manufacturing and safety assurance of CNG refuelling connectors, EN ISO 14469:2017 provides the essential technical and testing framework to ensure interoperability and safe operation at 200 bar and 250 bar service pressures.