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ISO FDIS 12614-7 2014 Edition, February 11, 2014 ROAD VEHICLES - LIQUEFIED NATURAL GAS (LNG) FUEL SYSTEM COMPONENTS - PART 7: PRESSURE RELIEF VALVE
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Availability date: 07/14/2021
Description / 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:
a) fuel containers;
b) stationary gas engines;
c) container mounting hardware;
d) electronic fuel management;
e) refueling receptacles.
NOTE 1 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.
NOTE 2 All references to pressure in this part of ISO 12614 are
to be considered gauge pressures unless otherwise specified.
NOTE 3 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.