Dwyer VFA-43-SS Visi-Float® Acrylic Flowmeter is a reliable and accurate instrument for measuring the flow of compatible gases and liquids. With an accuracy of 5% of FS for VFA and 3% of FS for VFB, it ensures precise readings. It can be mounted vertically and has a pressure limit of 100 psig (6.9 bar) @ 150°F (65°C) without a valve. The wetted materials, including acrylic plastic body, Buna-N O-ring, and nickel-plated brass, guarantee durability. It features a 1/8" female NPT process connection, while VFB ranges 85 and 86 have options for 1/4" NPT back connections or 3/8" NPT end connections. The scales are 2" or 4" in length depending on the model.