Flamco carries a wide range of expansion vessels, equipped with innovative technology. Both the steel shell and the membrane are made of top quality materials and guarantee a long service life. Expansion Vessels are for use in pressurised heating & cooling systems and permit the absorption of increases in volumes within the system due to temperature rises in the heating/cooling medium. The Contaflex expansion vessel comes in a range of sizes from 50 Litres through to 1000 Litres in capacity.
Features:
Note: Based on a total system volume (with a 3 bar safety valve)
- Formula 1:
Vu = Va x Vn 100
Where:
- Vu = Useful Volume
- Va = Total Content of Installation
- Vn = Percentage of expansion dependant upon the average temperature. Co-efficient to be applied as a function of the average temperature:
a) 40°C = 0.77
b) 60°C = 1.20
c) 70°C = 2.26
d) 80°C = 2.96
e) 85°C = 3.21
f) 90°C = 3.59
g) 95°C = 3.94
- Formula 2:
n = (Final Pressure + Ata. Pressure) – (Factory Set Pressure + Ata. Pressure) (Final Pressure + Ata. Pressure)
- n = Pressure Factor
- Ata. = Atmospheric Pressure (1bar)
- Formula 3:
Vt = Vu n
- Vt = Total Volume of Expansion Vessel
- Vu = Useful Volume (from formula no.1)
- N = Pressure Factor (from formula no.2)
Example:
The total volume of the installation is 350 litres and has a static head of 10m. The average operating temperature is 80°C and the system is fitted with a 3 bar safety valve i.e. final pressure. Find a suitable Reflex Expansion Vessel?
1) Vu = 350 x 2.96 = 10.36 litres 100
2) Note: = Factory set Pressure is 1 bar
n = (3+1) – (1+1) = 0.5 (3+1)
3) Vt = 10.361 = 20.72 litres 0.5
Solution:
From the catalogue we can see that a 25 litre normal type or a 24 litre flat type would be suitable for the system described above. For further details please contact our sales department.
Print Page Data Sheet
Flamco Data Sheet 50L - 80L
Flamco Data Sheet 100L - 1000L