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Measure the flowrate of liquids and gases, rotameters have a linear scale, a relatively long measurement range, and low pressure drop. They are simple to install and maintain.

Technical Reference Material
Technical Reference Material
Variable Area Flowmeters Information
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FL-2000
FL-2000
Water and air rotameters
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FL-1,2,3,4,5,6,7,8GP
FL-1,2,3,4,5,6,7,8GP
Multi-tube Rotometers/Gas Proportioning Rotometers
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FL-10 Series
FL-10 Series
Rotameter for Liquid Flow
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FL-1500
FL-1500
Economical High Accuracy Rotameters - Capacity: 9 to 729 slm for Air; 0.3 to 23.8 l/m Water
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FL-1600
FL-1600
Heavy Duty Industrial Rotameters - Capacity: 0.2 to 23.7 l/m of Water; 6 to 729 slm of Air
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FL-2500
FL-2500
Rotameter with or without needle valve
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FL-3000SA Series
FL-3000SA Series
PTFE Rotameters with Valves
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FL-45200A
FL-45200A
High-capacity In-line Flowmeters
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FL-86 Series
FL-86 Series
All Plastic Rotameters
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FL2AA Series
FL2AA Series
Multiple Tube Rotameters
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FL30000
FL30000
Economical Flowmeters For Measuring Water In a Closed Pipe System
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FL45100
FL45100
In-line Flowmeters With Half Union Adaptors
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FL46300
FL46300
In-line Flow meters
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FL50000A
FL50000A
Panel Mount Flowmeters
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FLT Series
FLT Series
ACCESSORY FLOWTUBES For Use with FL-3000 Series Rotameters, Multitube Assemblies and Gas Proportioners
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Fl-1200 Series
Fl-1200 Series
Economical Purge Rotameters  - Discontinued
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FL-5000
FL-5000
Glass Tube Flowmeters
E-Z Tube Change With Magnifying Front Shield

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FL-75
FL-75
Low Cost Industrial Rotameters With Capacities: 0.5 to 200 GPM of Water
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FL4000 Series
FL4000 Series
OEM Style Acrylic Rotameters
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FL600
FL600
Stainless Steel Frame Flowmeters
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FL7000 Series
FL7000 Series
OEM Style Acrylic Rotameters
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FL900
FL900
Heavy Duty Flowmeters With Stainless Steel Enclosures
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FLD100 Series
FLD100 Series
Stainless Steel Frame Industrial Flowmeters
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