the valve output is based on what level it's at on the tank
if it's on the side it's not gonna output until the liquid is at the level of the valve, so move the valve to the bottom of the tank (bottom of the side, not the edge) and it'll output.[DOUBLEPOST=1367146319][/DOUBLEPOST]well he probably has activated the tank, he's facing a lever so the blue lines won't appear.