1. 7'',8'',10'',11'',12'' height optional 2. Different plastic,brass or alumium rod size optional 3.Samples are free *Installation Position : Bottom*Fill rate : 0.05MPa : ≥0.05L/S*Working pressure : ≤0.6MPa*7'',8'',10'',11'',12'' height optional *Different plastic,brass or aluminium rod size optional.Different plastic,brass or aluminium rod size optional. Ball cock bottom fill valve