F.O.B DETECTOR. THE DETECTOR IS USUALLY USED IN CONJUNCTION WITH A PUMP, WHILST THE PUMP PRESSURISES THE BEER LINES. THE DECTECTOR ENSURES THE LINES DO NOT LOOSE PRESSURE OR EMPTY WHEN THE BEER KEG RUNS OUT. HAS A CHAMBER WITH A BLEED VALVE OR PRIMING FACILITY AND A FLOAT MECHANISM WHICH SHUTS OFF THE BEER FLOW TO THE LINES WHEN IT SENSES THE BEER KEG IS EMPTY.

GIR1 TERMS OF HEADING 9026 INCLUDES INSTRUMENTS FOR CHECKING THE FLOW, LEVEL OR PRESSURE OF LIQUIDS OF GASES. GIR6 TERMS OF ONE DASH SUBHEADING 902610, FOR MEASURING OR CHECKING THE FLOW OR LEVEL OF LIQUIDS. CN CODE 90261089, OTHER THAN FLOW METERS.