Road vehicles - Liquefied petroleum gas (LPG) fuel system components - Part 4: Level indicator
This document specifies **general requirements and definitions** of liquefied petroleum gas fuel components, intended for use on the types of motor vehicles as defined in *ISO 3833*. It also provides general design principles, and specifies requirements for instructions and marking.
This document is applicable to vehicles (mono-fuel, bi-fuel or dual-fuel applications) using gaseous fuels in accordance with *ISO 9162*. It is not applicable to the following:
NOTE 1 It is recognized that miscellaneous components not specifically addressed herein can be examined for compliance with the criteria of any applicable part of *ISO 20766*, including testing to the appropriate functional tests.
NOTE 2 All references to pressure in this document are considered gauge pressures unless otherwise specified.
NOTE 3 This document applies to devices which have a service pressure in the range of 110 kPa (Butane rich at 20 °C) and 840 kPa (Propane at 20 °C), hereinafter referred to in this document.
Other service pressures can be accommodated by adjusting the pressure by the appropriate factor (ratio).
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