In liquid rocket engines, cavitating venturi is used as flow control device which meters the constant flow rate at fixed inlet pressure under varying back pressure conditions. Cavitating venturi is used mainly in two configurations, fixed area cavitating venturi and variable area cavitating venturi. The use of fixed area cavitating venturi is more prominent in propellant feed lines of fixed thrust engines as well as that of test facility. In case of throttling engines, where a proper flow control is needed at different thrust level, variable area cavitating venturi is preferred. The present work investigates the cold flow characterization of a variable area cavitating venturi designed for 1000N MMH-N2O4 based Throttleable Pintle engine. The flow controlling area for the cavitating venturi was varied using a needle by mechanical means. Experiments were carried out using water as simulant fluid. Effect of back pressure on flow characteristics was studied at different stroke lengths of the moving needle at fixed inlet pressure. In addition, effect of varying inlet pressure on flow characteristics was also studied at a fixed stroke length of the moving needle.