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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      • Series GD, GR & GS Glass Tube Flow Meters
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Home Instruction Manuals

Instruction Manuals

Click on a product to view a PDF of the instructions.

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Machined Acrylic Flowmeters

Series PR Flowmeter
Series PR		 Series FR2000 Acrylic Flowmeters
FR2000		 Series FR4000 Acrylic Flowmeters
FR4000		 Series FR4500 Acrylic Flowmeters
FR4500		 Series FR4400 Acrylic Flowmeters
FR4400		 Series FR4700 Acrylic Flowmeters
FR4700		 Series FR4800 Acrylic Flowmeters
FR4800		 Series FR5000 Acrylic Flowmeters
FR5000 S or V
 Series 5000-I Acrylic Flowmeters
FR5000-I
 Series 5500 Acrylic Flowmeters
FR5500


Precision Glass Tube Flowmeters

Series GR Glass Tube Flowmeters
Series GR		 Series GS Glass Tube Flowmeters
Series GS
 Series GS-M Glass Tube Flowmeters
Series GS-M
 Series GS-L Glass Tube Flowmeters
Series GS-L


Molded Tube Flowmeters

Series FR6000 Molded Tube Flowmeters
Series FR6000		 Series MR3000 Molded Tube Flowmeters
Series MR3000


Obsolete Products

Sight-Flow Indicators

Liquid Sight-Flow IndicatorsGas Sight-Flow Indicators
Series FIG & FIL



MP Series
MP Series

Eagle Eye Alarm

 

 

Eagle Eye Alarm
Optalarm
Optalarm
 PV9000
PV9000

Instruction Manuals

Flowmeter Sizing

Chemical Compatibility Charts

  • Acrylic
  • Polycarbonate
  • Borosilicate Glass

Gas Correlation Data

Pressure & Temperature Corrections

Glossary/FAQ
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.