Rs variable area flowmeters

The flowmeters type Rs are instant flow measuring devices suitable for the dosage of all medical gases. 

They can be produced in version with pressure compensated or not compensated and manufactured both with single or twin flow tubes in order to allow a double and independent gas supply using a single gas source. The body is manufactured in chrome-plated brass with metal fittings and the measurement group is made of high resistance polycarbonate, making them ideal for the toughest applications.

They are also available in different solutions of pressure calibration, various options of scale, normal or extended (L version) to allow a better reading of the indicated values. Several options are proposed concerning the threaded connections, inlet or outlet, offering an endless variety of combinations to meet all application requirements.

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Tech Info

Sizes (LxWxH)

80x33x136 mm


0.24 Kg

Supply max. pressure

600 kPa

End of scale values - 3.5 bar

1 L/min. • 4 L/min. • 5 L/min. • 10 L/min. • 15 L/min.
• 20 L/min. • 30 L/min. • 50 L/min.


O2 • AIR • N2 • CO2 • N2O


±10% read value or ±0.5 L/min. if greater
(±10% E.O.S. value for flow E.O.S. ≤ than 1 L/min.) 

Inlet connection

ISO G 1/8” F. • ISO G 1/4” M. • 1/4”NPT M.
• 3/8” ISO 3253 F. • M 12x1 F.

Outlet connection

1/4” ISO 3253 M. • 3/8” ISO 3253 M. • M 12x1.25 M.
• 1/2” GAS M. • 9/16” UNF EN 13544-2 M. • 1/2” BSF F.

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