In extreme diving positions, like looking upwards, the TFX exhaust valve and diaphragm are positioned at exactly at the same level with no pressure differential. Any water will collect at the exhaust valve and be easily exhaled with each breath. The water column effect is minimal in the TFX, compared to the large water column effect in the conventional regulator, which will become more difficult to inhale since the diaphragm is higher than the mouthpiece. The TFX is much less sensitive to different attitudes encountered during diving.