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Flamco Contraflex diaphragm expansion vessel for sealed heating and cooling systems – stabilises pressure during temperature changes. 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 | 300 l |
| Weight | 35.60 kg |
The Flamco Contraflex pressurised expansion vessel is designed for sealed heating and cooling systems, where it compensates for changes in water volume during heating and cooling, helping to maintain stable system pressure. The vessel is fitted with a flexible diaphragm with a rolling action and a nitrogen charge to retain the pre-set pressure for longer. It features a fully welded construction, and each vessel is factory tested.
| Volume | 300 l |
| Max. operating pressure | 6 bar |
| Pre-set 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 |
| Max. water/glycol mixture | 50 % |
| Dimensions (Ø × height) | 600 mm × 1330 mm |
| Finish / colour | epoxy powder coating, red (RAL 3002) |
| Compliance | PED 2014/68/EU |
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