corded and totalized.what conditons suitable to install single jet water meter? As there is only one inlet of a single jet water meter, which is the only channel through which the flow must pass. no Impeller box that mainly cause pressure loss. The inlet of the single flow meter sometimes is blocked by impurities, so it requires higher water quality and is suitable to be installed in areas with better water quality and less impurity.usually it was applied as potable water meter, cold water meter