As the name suggests, circulator pumps are used to move water around a system.
They can be used within a building’s HVAC systems (i.e. chilled water circulation, hot water circulation, potable water circulation). Another important use for these kinds of pumps is to circulate cooling water in process plant.
Because they only circulate liquid within a closed circuit, they only need to overcome the friction of a piping system and are usually electrically powered centrifugal pumps.
Small to medium sized circulator pumps are usually supported entirely by the pipe flanges that join them to the rest of the system; large pumps are usually pad-mounted.
Bronze circulator pump
Pumps that are used in closed systems can be made with cast iron components as the water in the loop will either become de-oxygenated or be treated with chemicals to inhibit corrosion. Where there is a steady stream of oxygenated, potable water flowing through then more expensive materials such as bronze will be used.
For a copy of the ecex leaflet please click Pumps, valves & pipework
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