Key Instruments manufactures precision machined acrylic flow meters, molded plastic flow meters, glass tube flow meters, flow control valves, and other products for a wide variety of markets such as medical, industrial, chemical, semiconductor, water, the laboratory, and more

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Home Standard Products Variable Area Flow Meters Series GD, GR & GS Glass Tube Flow Meters

Glass Full Scale Flowrate Capabilities


Click on the product name for more details

LPM of Air
gr-gs-flowrates-chart-air
LPM of Water
gr-gs-flowrates-chart-water Series GR Series GS-M Series GS-L Series GS-L Series GS Series GS Series GR Series GS Series GR Series GS Series GS-M Series GS-L Series GS-L
Key Instruments
250 Andrews Road
Trevose, PA 19053-3491 USA
In USA and Canada: (800) 356-7483
Direct: (215) 357-0893
Fax: (215) 357-9239
Email: sales@KeyInstruments.com
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At Key Instruments, our success is built on recognizing that product manufacturers need more from their flow instrumentation suppliers than simply providing a standard product catalog.  Manufacturers of medical equipment, industrial gas mixing and distribution systems, aquaculture control equipment, gas and liquid analyzers, water handling and treatment skids, and many others continue to partner with us due to our unique ability to drive costs out of the final product. When maintaining a world-class supply chain is critical, premier product manufacturers call Key.