King Instrument

Flow meters from the King Instrument Company provide exceptional performance in a wide range of industrial, commercial and specialty applications. King Instruments’ product line has grown and expanded to satisfy the demands of almost any variable area flowmeter application. Read more...

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Questions? Call one of our engineers at 1-800-884-4967.
King Instrument 7520 / 7530 Series Rotameter
King Instrument 7520 / 7530 Series Rotameter
Machined cast acrylic block construction variable area flow meter for water or air, with a direct reading scale.
Some Models in Stock
Starting at $73.00
King Instrument 7430 / 7440 Series Rotameters
King Instrument 7430 / 7440 Series Rotameters
Low-flow, borosilicate glass rotameters with optional alarm.
Some Models in Stock
Starting at $220.00
King Instrument 7200 Series Rotameter
King Instrument 7200 Series Rotameter
General purpose rotameter with machined cast acrylic metering tube, replaces the IK55-A.
Starting at $117.00
King Instrument 7510 and 7511 Series Rotameter
King Instrument 7510 and 7511 Series Rotameter
Acrylic tube rotameters with in-line connections, replaces the IK55-D.
Some Models in Stock
Starting at $68.00
King Instrument 7710 Series Rotameter
King Instrument 7710 Series Rotameter
Stainless steel rotameters with magnetically-coupled dial-type indicators, replaces the IK55-F.
Starting at $966.00
King Instrument 7100 Series Rotameter
King Instrument 7100 Series Rotameter
Stainless steel rotameter great for low flow, high pressure water or air applications.
Starting at $980.00
King Instrument 7330 Series Rotameter
King Instrument 7330 Series Rotameter
Polysulfone rotameters with PVC/PVDF union ends, replaces IK55-B.
Some Models in Stock
Starting at $305.00
King Instrument 7460 Series Rotameter
King Instrument 7460 Series Rotameter
Rotameter for gases or liquids with 75mm scale Borosilicate Kinglass metering tube .
Starting at $444.00
King Instrument 7650 Series Rotameter
King Instrument 7650 Series Rotameter
Chemically resistant, borosilicate glass tube meter series for liquid service.
Starting at $427.00
King Instrument 7450 Series Rotameter
King Instrument 7450 Series Rotameter
Rotameter with 75 or 150mm borosilicate glass metering tube.
Starting at $497.00
King Instruments 7310 Rotameter
King Instruments 7310 Rotameter
Molded Polysulfone rotameter with 304 stainless steel case for lighter duty applications where a case enclosed meter is preferred.
Starting at $584.00
King Instrument 7480 Series Rotameter
King Instrument 7480 Series Rotameter
Borosilicate glass metering tube with 250mm scale, NPT or flange & vertical or horizontal connections.
Starting at $778.00
King Instrument 7750 Series Rotameter
King Instrument 7750 Series Rotameter
Stainless steel rotameter with flange connections and optional 4-20mA transmitter.
Starting at $1,340.00
King Instrument 7910 Series Rotameter
King Instrument 7910 Series Rotameter
Borosilicate glass rotatmeters with optional alarm, 250mm scale glass tube & 304 stainless steel case.
Starting at $1,238.00
King Instrument 7610 Series Rotameter
King Instrument 7610 Series Rotameter
Borosilicate glass rotameters with optional alarm, replaces the IK55-E.
Starting at $826.00
King Instrument 7459 Series Rotameter
King Instrument 7459 Series Rotameter
Aluminum side plate rotameter with a 250mm scale borosilicate glass metering tube.
Starting at $939.00
King Instruments Silver Series Flow Meter
King Instruments Silver Series Flow Meter
Removable glass tube flow meters with powder-coated 304SS case & molded polycarbonate shield cover.
Starting at $1,093.00
King Instrument 7720 Series Rotameter
King Instrument 7720 Series Rotameter
Rugged PVC rotameters with magnetically-coupled dial-type indicator, replaces the IK55-G.
Starting at $1,104.00
King Instrument 7470 Series Rotameter
King Instrument 7470 Series Rotameter
127mm scale glass tube rotameter available with NPT or flange connections.
Starting at $691.00