Reflex 100 Litre (6 Bar) Heating Expansion Vessel 1" Connection HV100C


How It Works

In a closed heating system water cannot be compressed so any increase in volume, created by an increase in temperature, has to be accommodated by an expansion vessel. When water is cold, the pre-charge pressure forces the diaphragm against the tank towards the inlet. As the temperature increases, the expanded water volume pushes against the diaphragm creating additional volume for the water to enter. When the temperature decreases, the pre-charge pressure forces the water from the tank and back into the main heating system. This maintains a constant pressure within the heating system helping to reduce energy consumption. Materials Component Material Shell Carbon Steel Connections Carbon Steel Diaphragm Synthetic rubber compound Coating Powder Epoxy

Reflex 100 Litre Design

Manufactured in carbon steel with a two or three part weld construction.

Pre-pressurised air chamber with synthetic rubber compound bladder. Sizes 60 to 1000 litres (except 140 litres) have a replaceable bladder.

The internal surfaces of the vessel in contact with the water are coated against corrosion.

External surfaces have a blue durable powder coated finish.

Suitable for temperatures up to 70˚C, resistant to ethylene or propylene glycol mixtures and has low gas permeability.

Altecnic expansion vessels are all tested according to the Pressure Systems Directive.

Technical Specification

  • Max. working pressure 8 to 35 litres 3 bar 50 to 140 litres 6 bar
  • Test pressure 1.5 x max working pressure
  • Max. vessel operating temperature 70˚ C
  • Factory pre- charge 1.5 bar - nitrogen