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Bel-Art™ SP Scienceware™ Riteflow™ Mounted Flowmeters

For corrosive and noncorrosive liquids and gases

Manufacturer:  Bel-Art™ H404060010

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Catalog No. 11-163-75L



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™).



Flowmeter, Mounted; Scienceware Riteflow; Al frame; SS and Delrin control valve; 2 floats; PP barbs for tubing 8-9.5mm I.D; Accepts 1/8 female NPT fitting; Max. 200psi; Max 121 deg. C; Size 2; Magnified 65mm scale

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.
Description & Specifications


65mm Models with Aluminum Body
Glass and Stainless Steel
Glass: 0.23 to 5.5; Stainless: 1.1 to 20.4mL/min.
±2% Full Scale
1/8 female NPT