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Bel-Art™ SP Scienceware™ Riteflow™ Mounted Flowmeters

For corrosive and noncorrosive liquids and gases

Manufacturer: bel-art™  H404050075

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Metering tube mounted in an aluminum housing, an integral control valve, and two floats (one glass and one stainless-steel; except size 5, which includes one glass and one Carboloy™).


Gaseous hydrofluoric acid may damage the glass.

Catalog No. 11-163-77E

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Description & Specifications


Product Type Flowmeter
Size 2
Temperature Rating 65.5°C
Piping Connection Material Plastic
Case Material Aluminum
Accuracy ±2% Full Scale
Connections 1/8 female NPT
Pressure Rating 200psig
Model 150mm Models with PTFE Body
Flow Rate Range Glass: 0.23 to 5.5; Stainless: 1.1 to 20.4mL/min.
Float Material Glass and Stainless Steel

Useful metering ratios are 10:1 or better. All flowmeters except size 1 may be used with dual float combinations to increase metering to 20:1. Pressure drop is negligible. Flow ranges are linear; low differential pressures are independent of flowrate changes.
  • Heavy-walled borosilicate glass tubes with fused ceramic scales are shock resistant and chemically inert
  • Can be used with almost any corrosive or noncorrosive gas or liquid
  • Accurate over a wide range of gas and liquid flowrates: from 0.03 to 1812mL/min. for water, and from 2.5 to 60,888mL/min. for air
  • Accurate to within ±2% of full scale, with repeatability of ±0.25% of full scale
  • Calibration charts for air and water are included; charts for other gases and liquids are available from Bel-Art™ on request at no charge
Models with aluminum body have 1/8 female NPT connections with plastic hose barb for tubing with 5/16 to 3/8 in. I.D. (8 × 9.5mm) PTFE body units have 3/8 in. O.D. (9.5mm) glass tube extensions.