Dwyer DR4201 High Flow Glass Flowmeter is a reliable and accurate component for measuring the flow of compatible gases or liquids. With a temperature range of up to 250°F, it offers an accuracy of ±10% FS at 70°F and 14.7 psia. The flowmeter is mounted vertically and features a pressure limit of 200 psig. Its wetted materials include borosilicate glass, 316 SS, PTFE, and either brass or 316 SS for end fittings. Its 6-turn needle valve ensures precise control. Repeatability is ±0.25% of the scale reading, and it has a 10:1 turn-down ratio. The flowmeter connection is 3/8" female NPT, and it comes with direct reading 127 mm scales for air or water.