Dwyer VFA-3 Visi-Float® Acrylic Flowmeter is a reliable and accurate component, with VFA having a 5% of FS accuracy and VFB with 3% of FS accuracy. It can be used with compatible gases and liquids and is designed to be mounted in a vertical position. The wetted material includes acrylic plastic for the body, Buna-N O-ring, and nickel-plated brass or stainless steel for metal parts. The pressure limit ranges from 100 to 150 psig, depending on the presence of a valve, and the process connection is 1/8" female NPT, with 1/4" or 3/8" NPT options available for specific ranges. The scales range from 2" to 4" in length.