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Dakota Rotameters

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Rotameters, also known as variable area flow meters, are ideal for measuring the flow rates of a variety of liquid and gas applications. These popular, practical units consist of a tube, float, linear scale, long measurement range, and low pressure drop. Models are economical, reliable, simple to maintain, and easy to install. They can withstand corrosive fluids as well as high temperatures and pressures. Rotameters can be calibrated for most gases or liquids. Acrylic, polysulfone, and encased glass-tubed models are available.

Encased Glass Tube Panel Mount Flow Meter, Brass 3/8" FNPT Adapter, No Valve

Incorporating traditional variable area precision glass technology, these rugged brass panel mounted flow meters offer accurate and economical solutions to medium flow range measurements. These meters are designed with unique rotatable scales of dual air-water direct reading graduations showing SCFM and SLPM (air), as well as GPM and LPM (water) markings. No Valve.
Encased Glass Tube Panel Mount Flow Meter, 316 Stainless Steel 3/8" FNPT Adapter, No Valve

Incorporating traditional variable area precision glass technology, these rugged stainless steel panel mounted flow meters offer accurate and economical solutions to medium flow range measurements. These meters are designed with unique rotatable scales of dual air-water direct reading graduations showing SCFM and SLPM (air), as well as GPM and LPM (water) markings. No Valve.
Encased Glass Tube Panel Mount Flow Meter with Valve, PTFE, PTCFE 3/8" FNPT Adapter, No Valve

Incorporating traditional variable area precision glass technology, these rugged PTFE panel mount flow meters offer accurate and economical solutions to medium flow range measurements. These meters are designed with unique rotatable scales of dual air-water direct reading graduations showing SCFM and SLPM (air), as well as GPM and LPM (water) markings. No Valve.
Helium Flow Meters - Acrylic, Brass Fittings, No Valve

This Acrylic Flow Meter has a Dual Direct Reading Scale with yellow backing for easy viewing of Helium flow values. Viton^® Seals, 3/8" FNPT and Brass End fittings are standard. The float/guide material is 316 Stainless Steel. This Flow Meter is designed for panel mounting and can handle a Maximum Flow Rate of 1500 LPM (55 SCFM). No Valve.
Oxygen Flow Meters - Acrylic, Brass Fittings, Valve Included

This Acrylic Flow Meter with Valve has a Dual Direct Reading Scale with yellow backing for easy viewing of Oxygen flow values. Viton^® Seals, 3/8" FNPT and Brass End fittings are standard. The float/guide material is 316 Stainless Steel. This Flow Meter is designed for panel mounting and can handle a Maximum Flow Rate of 550 LPM (20 SCFM).
150mm Aluminum Flow Meter, No Valve

Designed for low flow rates, these 150mm Single Tube Aluminum Flow Meters are precision instruments embodying the inherent simplicity, versatility and economy of the classical variable area meter. They are particularly suitable for metering carrier gases in chromatography, in manufacturing processes, liquid and gas measurements in laboratories, pilot plants, flow and level indicating and controlling gases. No Valve.
150mm Brass Flow Meter, No Valve

Designed for low flow rates, these 150mm Single Tube Brass Flow Meters are precision instruments embodying the inherent simplicity, versatility and economy of the classical variable area meter. They are particularly suitable for metering carrier gases in chromatography, in manufacturing processes, liquid and gas measurements in laboratories, pilot plants, flow and level indicating and controlling gases. No Valve.
150mm Stainless Steel Flow Meter, No Valve

Designed for low flow rates, these 150mm Single Tube Stainless Steel Flow Meters are precision instruments embodying the inherent simplicity, versatility and economy of the classical variable area meter. They are particularly suitable for metering carrier gases in chromatography, in manufacturing processes, liquid and gas measurements in laboratories, pilot plants, flow and level indicating and controlling gases. No Valve.
Encased Glass Tube Panel Mount Flow Meter with Valve, Brass 3/8" FNPT Adapter

Incorporating traditional variable area precision glass technology, these rugged brass panel mounted flow meters offer accurate and economical solutions to medium flow range measurements. These meters are designed with unique rotatable scales of dual air-water direct reading graduations showing SCFM and SLPM (air), as well as GPM and LPM (water) markings. Valve included.
Encased Glass Tube Panel Mount Flow Meter with Valve, 316 Stainless Steel 3/8" FNPT Adapter

Incorporating traditional variable area precision glass technology, these rugged stainless steel panel mounted flow meters offer accurate and economical solutions to medium flow range measurements. These meters are designed with unique rotatable scales of dual air-water direct reading graduations showing SCFM and SLPM (air), as well as GPM and LPM (water) markings. Valve included.
Encased Glass Tube Panel Mount Flow Meter with Valve, PTFE, PTCFE 3/8" FNPT Adapter, Valve

Incorporating traditional variable area precision glass technology, these rugged PTFE panel mounted flow meters offer accurate and economical solutions to medium flow range measurements. These meters are designed with unique rotatable scales of dual air-water direct reading graduations showing SCFM and SLPM (air), as well as GPM and LPM (water) markings. Valve included.
Helium Flow Meters - Acrylic, Brass Fittings, Valve Included

This Acrylic Flow Meter with Valve has a Dual Direct Reading Scale with yellow backing for easy viewing of Helium flow values. Viton^® Seals, 3/8" FNPT and Brass End fittings are standard. The float/guide material is 316 Stainless Steel. This Flow Meter is designed for panel mounting and can handle a Maximum Flow Rate of 1500 LPM (55 SCFM).
150mm Aluminum Flow Meter with CV Valve

Designed for low flow rates, these 150mm Single Tube Aluminum Flow Meters are precision instruments embodying the inherent simplicity, versatility and economy of the classical variable area meter. They are particularly suitable for metering carrier gases in chromatography, in manufacturing processes, liquid and gas measurements in laboratories, pilot plants, flow and level indicating and controlling gases. This rotameter comes with a CV Valve. CV Valves are designed for adjusting flow rates in applications where high resolution metering regulation is not essential.
150mm Brass Flow Meter with CV Valve

Designed for low flow rates, these 150mm Single Tube Brass Flow Meters are precision instruments embodying the inherent simplicity, versatility and economy of the classical variable area meter. They are particularly suitable for metering carrier gases in chromatography, in manufacturing processes, liquid and gas measurements in laboratories, pilot plants, flow and level indicating and controlling gases. This rotameter comes with a CV Valve. CV Valves are designed for adjusting flow rates in applications where high resolution metering regulation is not essential.
150mm Stainless Steel Flow Meter with CV Valve

Designed for low flow rates, these 150mm Single Tube Brass Flow Meters are precision instruments embodying the inherent simplicity, versatility and economy of the classical variable area meter. They are particularly suitable for metering carrier gases in chromatography, in manufacturing processes, liquid and gas measurements in laboratories, pilot plants, flow and level indicating and controlling gases. This rotameter comes with a CV Valve. CV Valves are designed for adjusting flow rates in applications where high resolution metering regulation is not essential.
Polysulfone High Volume In-Line Flow Meter - Water (GPM/LPM), No Valve

For high volume flow measurements at low pressure losses, injection molded Hi-low “In-line” flow meters offers features of glass and metal flow meters at a fraction of their cost. These uniquely designed flow meters incorporate 2" FNPT connections, convenient "half unions" that couple the meter body to the connections, #316 stainless steel internal parts and Viton^® O-rings. Hi-Flow flow meters render excellent accuracies and repeatability and are virtually maintenance free.
Polysulfone High Volume In-Line Meter with 1" FNPT PVC Connections - Water (GPM/LPM)

The 6B06 series flow meter's rib guided polysulfone contains no metal in the fluid path. This makes the flow meter desirable in highly corrosive environments or deionized water applications. The 6B0600-PVC is equipped with 1" FNPT Adapters.
150mm Aluminum Flow Meter with High Precision Valve (MFV)

Designed for low flow rates, these 150mm Single Tube Aluminum Flow Meters are precision instruments embodying the inherent simplicity, versatility and economy of the classical variable area meter. They are particularly suitable for metering carrier gases in chromatography, in manufacturing processes, liquid and gas measurements in laboratories, pilot plants, flow and level indicating and controlling gases. This rotameter comes with a High Precision MFV Metering Valve. MFV Valves are ideal for adjusting flow rates whenever high sensitivity control and resolution are desirable, particularly in conjunction with metering tubes of very low flow rates.