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Key Instruments Legacy Products

Variable Area Flow Meters (Rotameters)

Key Instruments GS-L Glass Tube Flow Meter

GS-L Series

Glass Tube Variable Area Flow Meters

Download Installation Manual

View Replacement Product

Key Instruments GS-M Glass Tube Flow Meter

GS-M Series

Glass Tube Variable Area Flow Meters

Download Data Sheet

View Replacement Product

Key Instruments Pocket Flow Meter

Pocket Series

Plastic Tube Variable Area Flow Meters

Download Data Sheet

Valves