Abstract: The present invention relates to a modular compressed natural gas fuel unit comprising generally a tank adapted to contain compressed natural gas and a fuel supply unit integrally attached to the main valve of the tank.

Abstract: A meter is mounted inside a housing where the meter is designed for low pressure gas flow measurement and the housing is designed to withstand high pressure differentials. The meter itself includes a plurality of divided chambers and one chamber includes moving elements to measure the flow of gas between the inlet and the outlet. The moving elements inside the gas transmission chamber are supported in place in bearings mounted in dividing walls. Chambers on each side of the dividing walls which define the gas transmission chamber include oil slingers which dip into puddles of oil in the bottom of the chambers and fling a fan of oil upward to lubricate the bearings and other moving parts.

Abstract: To measure low volumes of gas flow in high-pressure systems a conventional gas meter is incorporated within a high-pressure container. Connections from inside the high-pressure container are connected to a warning system outside the container to alert the operator when too great a volume of gas is flowing through the meter and a restriction of the size of the outlet to the heavy-duty container prevents the damage to the meter which is designed to measure small volumes and is relatively delicate.