Rotameters

Rotameters, also known as variable area flow meters, are ideal for measuring the flow rates of a variety of liquid and gas applications.

  • No electrical connections
  • Easy to read direct reading scales
  • Large selection of flow rates and configurations to accommodate the unique requirements of most application.
  • Low maintenance

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  1. Argon (Ar) Flow Meter - Acrylic, Polypropylene Fittings, No Valve

    Argon (Ar) Flow Meter - Acrylic, Polypropylene Fittings, No Valve

    This Acrylic Flowmeter has a Dual Direct Reading Scale with yellow backing for easy viewing of Argon flow values. Viton® Seals, 3/4" FNPT and Polypropylene End fittings are standard. The float/guide material is 316 Stainless Steel. This Flowmeter is designed for inline mounting and can handle a Maximum Flow Rate of 1800 LPM (65 SCFM). No Valve.
  2. Air Flow Meters - Acrylic, Polypropylene Fittings, No Valve

    Air Flow Meters - Acrylic, Polypropylene Fittings, No Valve

    This Acrylic Flowmeter has a Dual Direct Reading Scale with yellow backing for easy viewing of Air flow values. Viton® Seals, 3/4" FNPT and Polypropylene End fittings are standard. The float/guide material is 316 Stainless Steel. This Flowmeter is designed for inline mounting and can handle a Maximum Flow Rate of 2100 LPM (72.5 SCFM). No Valve.
  3. Argon (Ar) Flow Meters - Acrylic, Polypropylene Fittings, Valve Included

    Argon (Ar) Flow Meters - Acrylic, Polypropylene Fittings, Valve Included

    This Acrylic Flowmeter with Valve has a Dual Direct Reading Scale with yellow backing for easy viewing of Argon flow values. Viton® Seals, 3/4" FNPT and Polypropylene End fittings are standard. The float/guide material is 316 Stainless Steel. This Flowmeter is designed for inline mounting and can handle a Maximum Flow Rate of 1800 LPM (65 SCFM).
  4. Nitrogen (N2) Flow Meters - Acrylic, Polypropylene Fittings, Valve Included

    Nitrogen (N2) Flow Meters - Acrylic, Polypropylene Fittings, Valve Included

    This Acrylic Flowmeter with Valve has a Dual Direct Reading Scale with yellow backing for easy viewing of Nitrogen flow values. Viton® Seals, 3/4" FNPT and Polypropylene End fittings are standard. The float/guide material is 316 Stainless Steel. This Flowmeter is designed for inline mounting and can handle a Maximum Flow Rate of 2200 LPM (77.5 SCFM).
  5. Oxygen (O2) Flow Meters - Acrylic, Polypropylene Fittings, Valve Included

    Oxygen (O2) Flow Meters - Acrylic, Polypropylene Fittings, Valve Included

    This Acrylic Flowmeter with Valve has a Dual Direct Reading Scale with yellow backing for easy viewing of Oxygen flow values. Viton® Seals, 3/4" FNPT and Polypropylene End fittings are standard. The float/guide material is 316 Stainless Steel. This Flowmeter is designed for inline mounting and can handle a Maximum Flow Rate of 2000 LPM (70 SCFM).
  6. Carbon Dioxide (CO2) Flow Meters - Acrylic, Polypropylene Fittings, Valve Included

    Carbon Dioxide (CO2) Flow Meters - Acrylic, Polypropylene Fittings, Valve Included

    This Acrylic Flowmeter with Valve has a Dual Direct Reading Scale with yellow backing for easy viewing of Carbon Dioxide (CO2) flow values. Viton® Seals, 3/4" FNPT and Polypropylene End fittings are standard. The float/guide material is 316 Stainless Steel. This Flowmeter is designed for inline mounting and can handle a Maximum Flow Rate of 1800 LPM (62.5 SCFM).
  7. Helium Flow Meters - Acrylic, Polypropylene Fittings, Valve Included

    Helium Flow Meters - Acrylic, Polypropylene Fittings, Valve Included

    This Acrylic Flowmeter with Valve has a Dual Direct Reading Scale with yellow backing for easy viewing of Helium flow values. Viton® Seals, 3/4" FNPT and Polypropylene End fittings are standard. The float/guide material is 316 Stainless Steel. This Flowmeter is designed for inline mounting and can handle a Maximum Flow Rate of 5000 LPM (170 SCFM).
  8. Acrylic In-Line Flow Meter with Hastelloy Guide Rods, Polypropylene Connector, No Valve - Water

    Acrylic In-Line Flow Meter with Hastelloy Guide Rods, Polypropylene Connector, No Valve - Water

    Acrylic In-Line Flow Meter with Hastelloy Guide Rods, Polyproylene Connector, No Valve - Water
  9. Acrylic In-Line Flow Meter, Polypropylene Connector, No Valve - Water

    Acrylic In-Line Flow Meter, Polypropylene Connector, No Valve - Water

    Acrylic In-Line Flow Meter, Polypropylene Connector, No Valve - Water
  10. In-Line No Valve Model

    In Line PTFE Flow Meter, No Valve, PFA Flow Tube & PTFE/PCTFE Wetted Parts

    Made entirely of PTFE, PFA and PCTFE, the In-Line PTFE Flow Meter is excellent for high-purity applications or use with corrosive liquids. These meters feature chemically inert wetted components and a removable protective shield. Each meter is individually leak tested.
  11. 65mm Aluminum Flow Meter, No Valve

    65mm Aluminum Flow Meter, No Valve

    Designed for low flow rates, these 65mm 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.
  12. 65mm Brass Flow Meter, No Valve

    65mm Brass Flow Meter, No Valve

    Designed for low flow rates, these 65mm 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.
  13. 65mm Stainless Steel Flow Meter, No Valve

    65mm Stainless Steel Flow Meter, No Valve

    Designed for low flow rates, these 65mm 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.
  14. 65mm PTFE Encased Glass Tube Flow Meter, 1/8" FNPT Adapter, No Valve

    65mm PTFE Encased Glass Tube Flow Meter, 1/8" FNPT Adapter, No Valve

    These rugged 65mm PTFE-Glass Flow Meters offer solutions to low to medium flow range measurements of highly corrosive or ultra-pure liquids and gases. Wetted inert components are surrounded by structurally rigid anodized aluminum. The resultant design represents a unique combination of a rugged mechanically rigid frame and chemically inert wetted parts. No Valve.
  15. Encased Glass Tube In-Line Flow Meter, Brass 3/8" FNPT Adapter, No Valve

    Encased Glass Tube In-Line Flow Meter, Brass 3/8" FNPT Adapter, No Valve

    Incorporating traditional variable area precision glass technology, these rugged brass in-line 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.
  16. Encased Glass Tube In-Line Flow Meter, 316 Stainless Steel 3/8" FNPT Adapter, No Valve

    Encased Glass Tube In-Line Flow Meter, 316 Stainless Steel 3/8" FNPT Adapter, No Valve

    Incorporating traditional variable area precision glass technology, these rugged stainless steel in-line 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.
  17. Encased Glass Tube In-Line Flow Meter, PTFE, PTCFE 3/8" FNPT Adapter, No Valve

    Encased Glass Tube In-Line Flow Meter, PTFE, PTCFE 3/8" FNPT Adapter, No Valve

    Incorporating traditional variable area precision glass technology, these rugged PTFE in-line 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.
  18. Polysulfone In-Line Flow Meter with Polysulfone Connection - Water, 2" GPM/LPM or GPH/LPH Scales, No Valve

    Polysulfone In-Line Flow Meter with Polysulfone Connection - Water, 2" GPM/LPM or GPH/LPH Scales, No Valve

    These compact, durable flow meter units are injection molded of heat and chemical resistant Polysulfone. To facilitate inline mounting, these meters feature Quik Loc (half union) connectors that couple the meter body to the pipe connectors at each end of the flow meter. The 6B0100 line has a fluid flow range of 0.025 GPM to 10 GPM.

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