Dwyer DR4201M High Flow Glass Flowmeter is a reliable and accurate device suitable for measuring the flow of compatible gases or liquids. With a temperature range of up to 250°F (121°C) and an accuracy of ±10% FS @ 70°F (21.1°C) and 14.7 psia (1 atm absolute), its vertical mounting and durable wetted materials make it a robust choice. It has a maximum pressure limit of 200 psig (13.8 bar) and a repeatability of ±0.25% of scale reading. The flowmeter features direct reading 127 mm scales for air or water, a 3/8" female NPT connection, and a turn-down ratio of 10:1. Models with valves come equipped with a 6-turn needle valve.