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Bel-Art™ SP Scienceware™ Riteflow™ Mounted Flowmeters

For corrosive and noncorrosive liquids and gases

Manufacturer:  Bel-Art™ H404040005

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Catalog No. 11-163-77N

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Gaseous hydrofluoric acid may damage the glass.

Includes: 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™).



For corrosive and noncorrosive liquids and gases

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.


Glass and Stainless Steel
65mm Models with PTFE Body
Glass: 0.02 to 31; Stainless: 0.09 to 1.25mL/min.
±2% Full Scale
1/8 female NPT
Product Certifications


  • Bel-Art Products , Bel-Art - SP Scienceware
    Buy $150 in Bel-Art SP Scienceware or H-B Instrument products and get $150 more at no additional cost.


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