Window Sight Flow Indicator with Impeller, Indicator Type Rotor, Body Material Bronze, Connection Size 1/4 in, Connection Type FNPT, Operating Pressure - Maximum 125 psig, Sight Material Tempered Glass, Sight Diameter 1.7 in, Number of Windows 2, Flow Direction Horizontal Left, Horizontal Right, Vertical Down, Vertical Up, Media Temperature - Minimum 32 Degrees F, Media Temperature -Maximum 200 Degrees F, Seal Material Buna-N