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Advanced Water Company, Unit D5 The Enterprise Centre, Off Enterprise Way, Vale Park, Evesham Worcestershire, WR11 1GS TEL: 01386 760066 FAX: 01386 760077 EMAIL: [email protected]
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60 Litre Ultra Pro Expansion Vessel With Interchangeable Membrane
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Introduction Altecnic offer a complete range of expansion vessels to meet the requirements of most heating systems and for use with potable water. The expansion vessels are manufactured to meet the requirements of PED 97/23/EC Directive and BS EN 13831:2007 ‘Closed expansion vessels with built in diaphragm for installation in water’. Design * The vessel is fabricated by welding the various sections together which results in a very reliable structure suitable for internal pressures of up to 8bar. *The internal membrane is replaceable and is suitable for use with potable water. * Epoxy coated in blue. * Suitable for temperatures up to 99°C, resistant to ethylene or propyleneglycol mixtures and has low gas permeability. * Altecnic expansion vessels are all tested according to the Pressure Systems Directive. How It Works In a closed hot water circuit, the 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 membrane sack to collapse until the pump is started when the sack starts to inflate. As the temperature in the system increases, with the associated increase in pressure and volume, the expanded water enters the sack creating additional volume and lowering the pressure. When the temperature decreases, the pre-charge pressure forces the water from the sack and back into the main water circuit.
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Materials Shell: Carbon steel Connections: Carbon steel Diaphragm: Butyl rubber Coating: Powder epoxy Technical Specification Max. working pressure: 10 bar Max. operating temperature:-10°C to 99°C Factory air pre-charge:1.5 bar
