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ISO FDIS 12614-6 2014 Edition, February 11, 2014 ROAD VEHICLES - LIQUEFIED NATURAL GAS (LNG) FUEL SYSTEM COMPONENTS - PART 6: PRESSURE REGULATOR
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Description / Abstract:
This part of ISO 12614 specifies tests and requirements for the
pressure regulator, 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 applicable to vehicles using
natural gas in accordance with ISO 15403 (mono-fuel, bi-fuel, or
dual-fuel applications). It is not applicable to the following:
1) fuel containers;
2) stationary gas engines;
3) container mounting hardware;
4) electronic fuel management;
5) 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 bar). (1 bar = 0,1 MPa =
105 Pa; 1 MPa = 1 N/mm2.) Other working pressures can be
accommodated by adjusting the pressure by the appropriate factor
(ratio). For example, a 2 MPa (20 bar) working pressure system will
require pressures to be multiplied by 1,25.