Patent ID: 8156801

Claim:
A fluid flow metering device comprising: a ball valve locatable in the fluid flow, having at least two transverse bores through the ball valve, a first transverse bore and a second transverse bore; the first transverse bore including a fluid flow metering apparatus for measuring the rate of fluid flow through the first transverse bore; the ball valve being rotatable between a first metering position where fluid is flowable through the first transverse bore and a second open position where fluid is flowable through the second transverse bore; and the first transverse bore and the second transverse bore intersect each other; the valve is moveable between the first metering position in which the metering apparatus can measure the fluid flow through the first transverse bore and the second open position wherein the metering apparatus is located on one side of the valve; and the second transverse bore being dimensioned so that a tool is movable through the second transverse bore when the ball valve is in the second open position.