reference 150 and the valve body by reference 120 in the drawings ball 140 and stem 150 fit within the valve body 120 in the same manner as in the previous embodiment however the assembly is somewhat different due to the different interconnection provided between ball 140 and stem 150 in the embodiment shown in fig1 13 the ball 140 includes a bore 142 which aligns with the fluid passageway comprising the central axially extending bore 122 of valve body 120 when the valve is in an open position i e ball 140 rotated 90 u00b0 from the position shown in fig1 the construction of the ball valve including ball 140 and valve body 120 is substantially the same as that described in the first embodiment the ball however includes an upwardly projecting generally trapezoidal cross section rib 144 having a somewhat wider dimension at its top surface 145 as compared to the junction 143 of rib 144 with the body of ball 140 the ball further includes a pair of inwardly projecting curved arms 146 and 148 which are somewhat thicker and more robust than the arms 46 and 48 of ball 40 in the previous embodiment thus arms 146 and 148 do not deflect and assembly of the ball to stem 150 is not achieved by snapping the stem into the ball as the ball is installed within valve body 120 stem 150 includes a mating trapezoidal slot or keyway 154 which lockably engages trapezoidal rib 144 of valve ball 140 as seen in fig1 and 13 with valve stem 150 further including a pair of outwardly extending legs 156 and 158 which extend within slots 147 and 149 under legs 146 and.