|Heating - Size||DN20|
|Heating - Powered||No|
|Heating - Backflow Prevention||No|
Sealed heating circuits; Chilled water circuits.
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Where indicated on the drawing an air and dirt eliminator shall be installed – model ADR - as distributed by Arrow Valves Ltd – Tel 01442 823123 www.arrowvalves.co.uk. The unit shall have female BSP with brass body. The Deaerator should be installed to a low pressure point in the system such as prior to a circulation pump, or where practical, towards to top of the system.