Can the CLEARFLOW be used on a system which has a Primatic single feed cylinder?
It is necessary to disconnect or loop out the Primatic cylinder otherwise the high flow rate of the Clearflow will dislodge the air bubble in the cylinder, leading to mixing of radiator and tap water. Be aware that the Primatic cylinder was often used in a gravity hot water system, with separate pumped flow and return piping to the radiators. Consequently, connecting your Clearflow onto the flow and return piping to the Primatic will not enable you to power flush the radiator circuit. This would have to be power flushed separately, ideally by connecting across the system circulator pump connections. N.B. Remember that Water Bye-laws prohibit the use of corrosion inhibitors in systems with a Primatic cylinder, because of the risk of contaminating the domestic water supply.
