Dwyer VFA-9-EC Visi-Float® Acrylic Flowmeter is a reliable and accurate component for measuring flow rates of compatible gases and liquids. It has a 5% accuracy for VFA and 3% accuracy for VFB. The flowmeter is designed to be mounted in a vertical position and has a pressure limit of 100 psig without a valve and 100 psig with a valve. The wetted materials include acrylic plastic, Buna-N O-rings, and nickel plated brass (SS optional) for durability. With a 1/8" female NPT process connection, the flowmeter is available in different scales with varying lengths.