IS 15712 : 2006 Road Vehicles - Compressed Natural Gas (CNG) Fuel System Components - Automatic Valve (Solenoid Valve)

1 Scope

1.1 This standard specifies tests and requirements of automatic valve (Solenoid valve) of CNG onboard fuelsystem components, intended to use on motor vehicles defined in IS 14272 (Part 1),two wheelers, constructionequipment vehicles (CEV).

1.1.1 This standard is applicable to CNG fuel system components intended to use on vehicles usingcompressed natural gas in accordance with IS 15320 (mono-fuel or bi-fuel applications). It is not applicable to the following

a) Liquefied natural gas (LNG) fuel system components located upstream of, and including, the vapourizer;

b) Fuel containers;

c) Stationary gas engines; and

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

1.1.2 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

The following standards contain provisions, which through reference in this text, constitute provisions of this standard. At the time of publication the editions indicated were valid. All standards are subject torevision and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.