Midwest single window units are always equipped with spinners to provide for observation of clear fluid flows at the lowest cost. Vertical tube-type sight flow indicators consist of a clear glass tube, equal to or greater than the diameter of the pipe into which it is inserted, and are utilized to observe high flow rates in vertical pipe runs. No spinners or other type of detection devices are incorporated in these units. As a result, they offer no significant resistance to flow and therefore provide the lowest pressure drop of any type sight flow indicator. Midwest Sight Flow Indicators are available with special materials to meet various applications.
Optional materials are available for the sealing gaskets, spinners, and housings or flanges.
Gateway also distributes Dwyer Instruments , .