ISO/DIS 15500-20:2025

ISO 15500-20:2015 provides specific requirements and tests applicable to the rigid fuel line in carbon steel, intended for use on the types of motor vehicles, as defined in ISO 3833, with a service pressure for natural gas as a fuel of 20 MPa (200 bar) settled at 15 °C. ISO 15500 is intended to be applied to vehicles using natural gas which comply with requirements established in ISO 15403-1 (mono-fuel, bi-fuel, or dual-fuel applications). This part of ISO 15500 does not apply to the following: a) liquefied natural gas (LNG) fuel system components located upstream of, and including, the vaporizer; b) fuel containers; c) stationary gas engines; d) container mounting hardware; e) electronic fuel management; f) refuelling receptacles. NOTE All references to pressure in this part of ISO 15500 are considered gauge pressures unless otherwise specified.[1] [1] 1 bar = 100 kPa = 0,1 MPa.