Viewport, Glass Lens and Baffle, 1/2 In. NPT, Hex Dia. Flats (In. ) 7/8 in, Max. Working Pressure (PSI) 50 psi, Max. Operating Temp. 300 Degrees F, Sight Length (In. ) 1/2 in, Sight Dia. (In. ) 1/2 in, Overall Length 1 3/32 in, Gearboxes, Pumps, Features Brass Construction. This item has been restricted from sale in the following state (s): []