SF flowmeters

The SF flowmeters are devices for the supply of medical gases particularly suitable in respiratory therapy. 

They are made of anodized aluminum body, and they are available with one or more graduated tubes and a built-in dosage unit. The inlet connections are at the bottom of the unit and arranged to be connected to the hospitals centralized gas plants or to cylinders complete with pressure regulators. For veterinary use, an anesthesia evaporator can be connected at the outlet of the dosage unit.

Tech Info


SF 1

SF 2

SF 3

SF 4

Sizes (LxWxH)

115x73x294 mm

115x114x294 mm

115x137x294 mm

115x170x294 mm


1.12 Kg

1.61 Kg

2.0 Kg

2.4 Kg

Dosage range

O2: 0.1 - 1 L/min.  • 0.1 - 8 L/min. • 0.2 - 15 L/min.
Air:  0.2 - 15 L/min.
N2O: 0.1 - 1 L/min. • 0.2 - 12 L/min.


±10% read value or ±0.15 L/min. if greater  
(±10% E.O.S. value for flow E.O.S. ≤ than 1 L/min.)

Inlet pressures

3.5 - 5 bar ±20%

Charge loss level, side under pressure (before the adjusting needle valves)

less than 25 ml/min. in normal pressure conditions (ISO 5358)

Charge loss level, low pressure side (after the adjusting needle valves)

less than 25 ml/min. at 30 cm H2O

Mixed gases outlet connection

Ø 22 M. - 15 F. ISO DIN 5356-1 or conical connection 23 mm F
ISO DIN 5356/1 (for veterinary use only)

Gases inlet connections

hose connector Ø 6 mm

Related products

In compliance with the New Guidelines of the Italian Ministry of Health of 28/03/2013 regarding health advertising concerning medical devices, in vitro medical diagnostic devices and medical surgical facilities, we caution that the information contained in this website is exclusively directed at professional practitioners. All contents are of an informational nature and do not have advertising purposes.