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Flamco Contraflex 500 l diaphragm pressure expansion vessel for sealed heating and cooling systems, with long-term stable pre-charge pressure. More information
Out of stock - can be requested
| Connection size | R 1" |
| Connection Type | External thread |
| Max. operating pressure | 6 bar |
| Temperature | -10...70 °C |
| Volume of the pressure vessel | 500 l |
| Weight | 60.20 kg |
The Flamco Contraflex 500 l pressurised expansion vessel is designed for sealed heating and cooling systems, where it compensates for changes in water volume due to temperature fluctuations and helps maintain stable system pressure. The vessel features a fully welded construction and a flexible SBR diaphragm with a rolling action. Thanks to the nitrogen charge, it retains the preset pre-charge pressure better over the long term and is also suitable for water/glycol mixtures up to 50%.
| Volume | 500 l |
| Max. operating pressure | 6 bar |
| Preset pressure | 2.5 bar |
| Diaphragm temperature | –10...70 °C |
| Max. flow temperature | 120 °C |
| Connection | R 1" (external tapered thread BSPT-R) |
| Diaphragm material | SBR |
| Design / finish | fully welded construction, epoxy powder coating (red RAL 3002) |
| Medium | water or water/glycol (max. 50%) |
| Certification | PED 2014/68/EU |
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