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King Instruments 7310 Series Rotameter

  • Value 304 stainless steel cased flowmeter
  • Moulded polysulfone metering tube
  • Hastelloy® wetted parts and Kalrez® seal options

The King 7310 Series rotameter offers a 304 stainless steel case for lighter duty applications where a cased enclosed flow meter is required.

The metering tube is moulded polysulfone with a choice of 316L SS, Teflon, Polysulfone or Hastelloy® C-276 for the internal wetted materials.

The meter is available from ½” NPTF connections up to 2” NPTF with the standard fitting material being 316L stainless steel with optional PVC or PVDF dependant on your application requirements. Viton® is the standard O-Ring with Buna N, EPR and Kalrez® also available.

All models have a 10:1 turndown ratio with water full scale flows flow rates from as little as 2 LPM up to 600 LPM and air models are available with full scale flow rates of 6 to 33 SCFM.

Maximum temperatures are available up to 93° C and pressure up to 13.7 bar.

Accuracy varies by model but this is within a ± 3% to ± 6% of full scale flow tolerance.

Scales are available in any volumetric unit and a latching reed switch alarm is available as an option.

Data sheets and manuals

Model numbers

  • K.7311221054A
  • K.7311221A44A
  • K.7311263A42W
  • K.7311273A41W


The King Instruments 7310 Series Rotameter is widely used in the following industries:

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