Dwyer DR4204M is a high flow glass flowmeter with a temperature range of 250°F (121°C). It ensures accuracy within ±10% FS @ 70°F (21.1°C) and 14.7 psia (1 atm absolute). This vertical mount flowmeter is ideal for compatible gases or liquids. It is made with high-quality materials such as borosilicate glass, 316 SS, PTFE, brass or 316 SS fittings, and Buna-N or fluoroelastomer o-rings. With a pressure limit of 200 psig (13.8 bar) and repeatability of ±0.25% of scale reading, it guarantees reliable measurements. The 6-turn needle valve is included in models with a valve. Connection is made easy with a 3/8" female NPT fitting. The flowmeter has a turn-down ratio of 10:1 and direct reading 127 mm scales for air or water.