Ideal Potable Expansion Vessel 24 Litres 176753

The Ideal 176753 is a 24 litre potable expansion vessel used on Ideal unvented hot water cylinders and commercial heating appliances. It absorbs the expansion of heated potable water within a sealed system, keeping pressure stable and protecting the cylinder, relief valve and pipework from repeated stress. It is supplied as a direct replacement for the vessel fitted to the Ideal Thermstore range and Ideal Commercial equipment.

• Pressure relief valve discharging or weeping during cylinder heat-up
• System pressure climbing sharply as the cylinder reaches temperature
• Pressure gauge reading high when hot and dropping back when cold
• Vessel feels heavy or waterlogged when disconnected and shaken
• Little or no air released when the charge valve is depressed

• Confirm the appliance model and, where shown, the GC number against the compatibility list
• Check the existing vessel's capacity and connection arrangement match the 24 litre unit before removal
• Note the alternative part number 1782910 when cross-referencing older documentation
• Work on unvented cylinders and associated pressure controls should be carried out by a competent person