Home / Products / Flow / Flowmeters / Variable Area Products Calibration Services DEMO 1 DEMO 2 DEMO 3 DEMO 4 DEMO 5 Pressure DEMO 1 DEMO 2 DEMO 3 DEMO 4 DEMO 5 Air Quality DEMO 1 DEMO 2 DEMO 3 DEMO 4 DEMO 5 Air Velocity DEMO 1 DEMO 2 DEMO 3 DEMO 4 DEMO 5 Flow DEMO 1 DEMO 2 DEMO 3 DEMO 4 DEMO 5 Level DEMO 1 DEMO 2 DEMO 3 DEMO 4 DEMO 5 Temperature DEMO 1 DEMO 2 DEMO 3 DEMO 4 DEMO 5 Test Equipment DEMO 1 DEMO 2 DEMO 3 DEMO 4 DEMO 5 Valves DEMO 1 DEMO 2 DEMO 3 DEMO 4 DEMO 5 Miscellaneous DEMO 1 DEMO 2 DEMO 3 DEMO 4 DEMO 5 Hazardous Rated DEMO 1 DEMO 2 DEMO 3 DEMO 4 DEMO 5 Series RM 2", 5" or 10" Scale, Interchangeable Bodies* Rate-Master® Polycarbonate Flowmeter is suitable for both gas and liquid applications. View More Series VF Hot-Stamped Scales, Multi-Angle Views of Flow Visi-Float® Acrylic Flowmeter is a clear acrylic body flowmeters suitable for both gas and liquid applications. A few applications are medical equipment, air samplers, gas analyzers, and chemical injectors. View More Series VFC/VFCII Used to Indicate Air or Water Flow, End Connections Visi-Float® Acrylic Flowmeter is a clear acrylic body flowmeter suitable for both gas and liquid applications. A few applications are cabinet purging, remediation, and osmosis skids. View More Series DR4 Direct Reading, 127 mm Scale, ±10% FS Accuracy High Flow Glass Flowmeter offers a solution to the problem of fluid flow indication at higher capacity levels. Designed to withstand even the harshest industrial applications. View More Series VAT In-Line, Chemically Inert Variable Area Fluoropolymer Flowmeters are ideal for high purity or corrosive liquid applications. Applications include chemical injectors and deionized water systems. View More Series RSF Dual, Rotatable Direct Reading Scales for Air and Water Rotatable Scale Flowmeters are ideal for the direct flow measurement of air, water, and other commonly used gases. Features borosilicate glass tubes. An application is water and air pollution analysis systems. View More Series VA 65 mm and 150 mm, ±2% FS Accuracy, Interchangeable Flowtubes, PTFE Options, Universal mm Scale Variable Area Glass Flowmeters are designed with easy to read scales. Suitable for metering carrier gases, liquid, and gas measurement in pilot plants, process flow, and level indicating. View More Series TVA 75 mm and 125 mm, 10:1 Turndown, Back Connect, Corrosive Resistant All Fluoropolymer Flowmeters offer solutions for measuring flow rates of highly corrosive or ultra-pure liquids. Applications include chemical injectors and deionized water systems. View More Series DR 65 mm and 150 mm, Interchangeable Flowtubes, Direct Reading Scales Direct Reading Glass Flowmeters are ideal for direct flow measurement of air, water, and other commonly used gases. Shipped completely assembled and include standard panel mounting hardware. View More Series MM 2" or 1-1/2" Scale, Configurable Valve Option Mini-Master® Flowmeter is suitable for both gas and liquid applications with advanced features at a low cost. Compact flowmeter ideal for measuring small volume air. View More Series UV Monitor Water Flow Rates from .25 to 40 GPM, Air Rates from 1 to 100 SCFM Ultra-View™ Polysulfone Flowmeter is a laboratory grade flowmeter with a dual scale that measures flow in GPM and LPM of water, air, and other compatible media. View More Series MTF Customize to Fit Application, 65 mm or 150 mm Variable Area Flow Tubes Multitube Flow System can be configured with up to six different flow tubes with various flow capacities and flow patterns. Ideal for multichannel metering, mixing, or monitoring applications. View More Series IF Air/Water Direct Reading Scale, 304 SS Protective Shield Industrial Direct Reading Flowmeters are directly measure flow rates for water and for air service. Applications include gas or liquid metering and industrial pneumatic or hydraulic systems. View More Series VA-K Interchangeable Flow Tubes and Floats, 150 mm Universal Scales Variable Area Flowmeter Kit is economical. Includes a completely assembled flowmeter and three interchangeable flow tubes. A few applications include air and water analysis, film processing, and pharmaceutical. View More Series OMA Use to Indicate and Manually Control Oxygen Flow Oxygen Flowmeter is for medical applications and manually controlling flow from oxygen generators. Flow levels are kept stable by precision valve and knob adjustment. View More Series LFM Chemically Resistant, In-Line or Panel Mount Options, Adjustable Set Point Indicator Option Polycarbonate Flowmeters are made of precision, injection molded polycarbonate bodies and fittings. They feature dual, direct reading scales measuring in both GPM and LPM. View More RKA Optional extras for both Rate-Master® Flowmeters and Visi-Float® Flowmeters Regulator Kits are available as optional extras. The standard regulator may be used with any Dwyer Series RM or VF flowmeter. View More