The King Instrument 7470 series rotameter is a 127mm scale glass tube meter available with NPT or flange connections. Vertical or horizontal, the King Instrument 7470 series rotameter and glass tube meter offers value and versatility in 304 stainless steel case construction. Internal components are available in 316L stainless steel or Hastelloy C-276. Inlet/outlet fittings are available in FNPT or flange, vertical, or horizontal. The fitting material is available in 316L stainless steel or PVC (vertical connections only).

The King Instrument 7470 series rotameter is available in capacities from 0.25 to 116GPM for water or 1 to 245 SCFM for air. Accuracy is ±3% of full scale, repeatability is 1/2%, and the turndown ratio is 10:1 or 12.5:1. Maximum pressure is up to 250 psig depending on fitting material, and maximum temperature is up to 250°F. A latching reed switch alarm is available for some models.