Slow leak in sealed water system

first queation is what pressure did you apply and what was the pressure on the water side?

if you dont know then that may be your problem, if there is a hole in the diaphragm then you WILL get water OUT of the pressure in valve/charge valve

if not the you could be losing pressure somewhere else, pressurize the vessel then use leak detector fluid to pinpoint and defects in construction then use any insurance or warranty to get it fixed??????

Thanks Gav. The pumped pressure is set to sit at 3bar. Normally the pump cycles on again at 1bar. Over time to pressure drops from 3 to

As for leaks I have no evidence of any; and each night, & on weekends away, the whole system is switched off (we are slightly paranoid) with no pressure loss at all.

There is no makers name on the pressure vessel nor on the plumbers invoice. Is there any diagram available of what is going on inside these things?

Thanks

Phil

The SealedCH FAQ has a bit about pressure vessels in it. This is a blue (potable water) unit. I'd simply change the unit.

However for your setup the precharge pressure on the dry side should be a around 1.0bar not 3 bar, otherwise the expansion vessel won't start to do anything until the water pressure is at 3 bar.

thats what i was getting at!

Thank you gentlemen. Now I wait to see if cycle time reduces over time . . .

Phil