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normaly between 1.2 and 1.5 bar.

incorrect EV pressure? how could i check for this?

expansion vessel 10litres, water volume 70 litres. any help

ill try get some pictures agile whem im at work 2m, where can i get this sealent from any plumbing shop?

leak sealer, can that be added straight into the water system?

any idea what pressue i should test the system to help find this leak? its costing me loads money as cant close the job, really do with your help guys

IM LOSING PRESSURE IN MY WATER PUMP SYSTEM FOR SMALL CHILLER UNIT PUMPING WATER TO 5 CASSETE UNITS, I HAVE CHANGED THE AAVS AS FIRST THOUGHT THIS MAY BE THE PROBLEM, BUT STILL LOSING PRESSURE, TESTED THE SYSTEM FOR 1HOUR AT 3 BAR AND LOST NO PRESSURE IT SEEMS TO BE LOSING PRESSURE SLOWLY, PLEASE...