ISO 12614-7

Abstract

This part of ISO 12614 specifies tests and requirements for the pressure relief valve (PRV), a liquefied natural gas fuel system component intended for use on the types of motor vehicles defined in ISO 3833. This part of ISO 12614 is not applicable to the following: <br>a) fuel containers; <br>b) stationary gas engines; <br>c) container mounting hardware; <br>d) electronic fuel management; <br>e) refueling receptacles. <br>NOTE 1&#160;It is recognized that miscellaneous components not specifically covered herein can be examined to meet the criteria of this part of ISO 12614 and tested according to the appropriate functional tests. <br>NOTE 2&#160;All references to pressure in this part of ISO 12614 are to be considered gauge pressures unless otherwise specified. <br>NOTE 3&#160;This part of ISO 12614 is based upon a working pressure for natural gas as a fuel of 1,6 MPa [16 bar1)]. Other working pressures can be accommodated by adjusting the pressure by the appropriate factor (ratio). For example, 2 MPa (20 bar) working pressure system will require pressures to be multiplied by 1,25.