Watts offers iDROSET calibrated flow measuring and balancing valves with integrated flow measurement technology, a large dial for direct reading of flow, hand wheel for setting flow rate without the need for tools, and positive shut-off ball valve. The valves are factory tested and calibrated, and the gauge reads flow directly. The valves have a balancing turndown ratio of up to 25:1. Models are available in 1/2- to 2-in. sizes.