Dwyer DR4141M is a high flow glass flowmeter designed for vertical mounting in applications with temperatures up to 250°F. It offers an accuracy of ±10% FS at 70°F and 14.7 psia, with a pressure limit of 200 psig. The flowtube is made of borosilicate glass, and the wetted materials include 316 SS, PTFE, and brass or 316 SS fittings. It features a 3/8" female NPT connection and a 6-turn needle valve. Repeatability is ±0.25% of the scale reading, and it has direct reading 127 mm scales for air or water.