ICS 43.060.040                                                                       TED 26

Reaffirmed 2019

1 Scope

1.1 This standard specifies definitions, test methods and requirements of conduit (ventilation hose), of CNG onboard fuel system components intended for use on motor vehicles defined in IS 14272 (Part 1).

1.1.1 This standard is applicable to CNG fuel system components intended to be used on vehicles using compressed natural gas (mono-fuel or bi-fuel applications).

1.1.2 It is not applicable 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; and

d) CNG fuel systems components for the propulsion of marine craft.

1.1.3 This standard is based upon a service pressure for compressed natural gas as a fuel at 20 MPa (200 bar) settled at 15°C. Other service pressures could be accommodated by adjusting the pressure by the appropriate factor (ratio). For example, a 25 MPa (250 bar) service pressure system will require pressures to be multiplied by 1.25. All references to pressure are to be considered gauge pressures unless otherwise specified.

2 References