VAF-25

Principle of Operation

The operation principle of variable area flow meter is that fluid flow raises a float in a tapered tube, increasing the area for passage of the fluid. The greater the flow, the higher the float is raised. The height of the float is directly proportional to the flowrate. With liquids, the float is raised by a combination of the buoyancy of the liquid and the velocity head of the fluid. 

Variable Area Flow meter is composed of:

• Transparent taper tube
• Orange color float
• Bottom insert
• Top insert
• Union nut
• Union end
• O-ring
• Scale
• Flow level indicator
• Guiding rod

Material:

Fitting :  Plastic ABS
Union nut :   Plastic ABS
Fixer :   Plastic ABS
Float :   Plastic ABS 

Technical Parameter

Accuracy : 4          Temperature :  0-60 °C          Pressure : ?0.6 MPa


Dimension:

Dia (DN) mm

Model

Size (MM)

Pipe Fitting (DN)

Measure Range

L

D1

D2

D3

25

VAF-25

226

32

39

60

25/32

100-1,000 l/h