Dwyer VFA-22-SS Visi-Float® Acrylic Flowmeter: a reliable and accurate solution for measuring flow rates in compatible gases and liquids. With a 5% accuracy for VFA and 3% for VFB, this flowmeter features a vertical mounting orientation and is equipped with a variety of wetted materials to suit different ranges. The pressure limit is 100 psig @ 150°F without valve and 100 psig @ 120°F with valve. The process connection is 1/8" female NPT, with some exceptions for specific ranges. The VFA scale length is 2" and the VFB scale length is 4", making it easy to read and monitor flow rates.