ST75 flowmeter delivers precision flow measurement while reducing the consumption of energy fuel gases, specialty gases and pneumatic air. It is designed for line sizes from 0.25 in. to 2.0 in. (6 mm to 51 mm). It offers accuracy to ±1% of reading and ±0.5% repeatability and a flow range from 0.01 SCFM to 559 SCFM (0.01 NCMH to 950 NCMH). Approvals include Class 1, Div. I Groups B, C, D. Div. II Groups A-D and others.