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By Range
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Closed heating and hot water systems, unlike ol ...
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At Pump Sales Direct we stock a range of expans ...
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96526322
Grundfos GT-H-18 Vertical Cold Water Diaphragm Tank - 10 Bar - 18 LtrThe GT-H tanks are steel pressure tanks with a non-toxic butyl rubber diaphragm with a precision-moulded polypropylene liner for superior air and water separation. Recommend application: Drinking water.
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96528335
Grundfos GT-H-8 - Vertical Cold Water Diaphragm Tank - 10 Bar - 8 LtrThe GT-H tanks are steel pressure tanks with a non-toxic butyl rubber diaphragm with a precision-moulded polypropylene liner for superior air and water separation. Recommend application: Drinking water.
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96573397
Grundfos GT-HR-100 Vertical Hot Water Diaphragm Tank - 6 Bar - 100 LtrThe GT-HR tanks are steel pressure tank with a non-replaceable rubber diaphragm, pre-charged with nitrogen. Recommend application: Heating water.
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96573408
Grundfos GT-HR-1000 Vertical Hot Water Diaphragm Tank - 6 Bar - 1000 LtrThe GT-HR tanks are steel pressure tank with a non-replaceable rubber diaphragm, pre-charged with nitrogen. Recommend application: Heating water.
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96573398
Grundfos GT-HR-140 Vertical Hot Water Diaphragm Tank - 6 Bar - 140 LtrThe GT-HR tanks are steel pressure tank with a non-replaceable rubber diaphragm, pre-charged with nitrogen. Recommend application: Heating water.
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96573399
Grundfos GT-HR-200 Vertical Hot Water Diaphragm Tank - 6 Bar - 200 LtrThe GT-HR tanks are steel pressure tank with a non-replaceable rubber diaphragm, pre-charged with nitrogen. Recommend application: Heating water.
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96573400
Grundfos GT-HR-250 Vertical Hot Water Diaphragm Tank - 6 Bar - 250 LtrThe GT-HR tanks are steel pressure tank with a non-replaceable rubber diaphragm, pre-charged with nitrogen. Recommend application: Heating water.
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96573401
Grundfos GT-HR-300 Vertical Hot Water Diaphragm Tank - 6 Bar - 300 LtrThe GT-HR tanks are steel pressure tank with a non-replaceable rubber diaphragm, pre-charged with nitrogen. Recommend application: Heating water.
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96573403
Grundfos GT-HR-400 Vertical Hot Water Diaphragm Tank - 6 Bar - 400 LtrThe GT-HR tanks are steel pressure tank with a non-replaceable rubber diaphragm, pre-charged with nitrogen. Recommend application: Heating water.
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96573395
Grundfos GT-HR-50 Vertical Hot Water Diaphragm Tank - 6 Bar - 50 LtrThe GT-HR tanks are steel pressure tank with a non-replaceable rubber diaphragm, pre-charged with nitrogen. Recommend application: Heating water.
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96573404
Grundfos GT-HR-500 Vertical Hot Water Diaphragm Tank - 6 Bar - 500 LtrThe GT-HR tanks are steel pressure tank with a non-replaceable rubber diaphragm, pre-charged with nitrogen. Recommend application: Heating water.
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96573405
Grundfos GT-HR-600 Vertical Hot Water Diaphragm Tank - 6 Bar - 600 LtrThe GT-HR tanks are steel pressure tank with a non-replaceable rubber diaphragm, pre-charged with nitrogen. Recommend application: Heating water.
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96573396
Grundfos GT-HR-80 Vertical Hot Water Diaphragm Tank - 6 Bar - 80 LtrThe GT-HR tanks are steel pressure tank with a non-replaceable rubber diaphragm, pre-charged with nitrogen. Recommend application: Heating water.
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96573407
Grundfos GT-HR-800 Vertical Hot Water Diaphragm Tank - 6 Bar - 800 LtrThe GT-HR tanks are steel pressure tank with a non-replaceable rubber diaphragm, pre-charged with nitrogen. Recommend application: Heating water.
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96573347
Grundfos GT-U-8 Vertical Cold Water Bladder Tank - 25 Bar - 8 LtrThe GT-U tanks are steel pressure tanks with a replaceable, non-toxic butyl rubber bladder enclosed by compressed nitrogen. Recommend application: Grey water and Drinking water.
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14559
Flamco Airfix Expansion Vessel - 25 Litre - 4 barThe Airfix D expansion vessels operate in such a way that the water flows right through and they are continuously flushed with fresh water from the mains. This prevents tepid, stagnant water from collecting in the vessel in which bacterial growth could occur. Therefore, users can be assured of high quality potable water.
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Expansion Vessels / Pressure Vessels
An expansion vessel is used to protect closed central heating systems from becoming overloaded by excessive pressure. It is a small tank or container that is divided in to two.
It provides a cushion against any shocks caused by small influxes of air that lead to increased air pressure in the system. This can also occur when the water hammer absorbs too much pressure as a result of thermal expansion.
Expansion vessels are most commonly used to remove the need for a continuous pump in a pumped central heating system. The user can configure a low and high pressure level on the pump settings. When the water pressure reaches the lowest setting, the pump will engage and fill the vessel to the high pressure point. When it reaches this point the pump still stop.
Once this cycle has been completed, the expansion vessel will maintain the stored water at high pressure levels, ensuring a better and more consistent water flow. If the pressure in the vessel drops to the lower point, the pump will kick in and the cycle begins again.
An expansion or pressure vessel can be used in the home for the supply of drinking water. When used with a boiler, an expansion vessel can help maintain water pressure to ensure showers reach full power on demand.
All tanks and containers supplied by Pump Sales Direct are manufactured to comply with UK water regulations when used in this application. Pump Sales Direct supply expansion vessels for Europe’s leading manufacturers, including Airfix, Flexcon, Gitral, Grundfos, Heatwave, PressureWave, Reflex, Varem and ZILMET.
