Dwyer VFB-51-EC Visi-Float® Acrylic Flowmeter is a reliable and accurate flow measurement component. It has an accuracy of 5% (VFA) and 3% (VFB) of Full Scale (FS) and is compatible with a wide range of gases and liquids. The flowmeter is designed for vertical mounting and has wetted materials such as acrylic plastic, nickel plated brass, and stainless steel. It has a pressure limit of 100 psig (6.9 bar) @ 150°F (65°C) without a valve and 100 psig (6.9 bar) @ 120°F (48°C) with a valve. The process connection is 1/8" female NPT, except for VFB ranges 85 and 86 which have 1/4" NPT back connections or 3/8" NPT end connections. The flowmeter is available with different scales, with VFA having a 2" typical length and VFB having a 4" typical length.