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- Thread starter Daveleaver
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Daveleaver
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Daveleaver
Push fit city lol so yeah the picture of the pipes going under the cover they run all the way up to yhe loft into a push fit elbow then a 3m run each to the boiler. Its this 3m pipe tje flow that emptys.
Under that cupboard cover all the pushfit you can see is full of water confised why i have 1 flow pipe going yo the bathroom and 2 returns lol. But that besides the point. All the rads in this house are compression fittings too.
But yeah basically pressurised to bar isolated for a week then started tsking those connections ofg and water everywhere lol i put a tub underneath 1st. But yeah its just made my brain explode tbh. No matter how long i isolate it for same amount of loss and thays what i meant i just thoought ah good leak must be high cos itherwise itd all drop out cos water goes down but no idea now
Under that cupboard cover all the pushfit you can see is full of water confised why i have 1 flow pipe going yo the bathroom and 2 returns lol. But that besides the point. All the rads in this house are compression fittings too.
But yeah basically pressurised to bar isolated for a week then started tsking those connections ofg and water everywhere lol i put a tub underneath 1st. But yeah its just made my brain explode tbh. No matter how long i isolate it for same amount of loss and thays what i meant i just thoought ah good leak must be high cos itherwise itd all drop out cos water goes down but no idea now
if its an 0.8 bar it will still all be full of water. You take any joint off and there will be water. When its at 0 then you may have no water or may still have some depending on what point of the system. Unless you have water gushing out you aren't going to have an empty system, you yourself said earlier it only took a small amount of water to lower from 1.0 to 0.8, so why are you expecting pipes to be completely drained of water?
The noise you hear when you open the isolation valves is it pressurising, not filling
The noise you hear when you open the isolation valves is it pressurising, not filling
if its an 0.8 bar it will still all be full of water. You take any joint off and there will be water. When its at 0 then you may have no water or may still have some depending on what point of the system. Unless you have water gushing out you aren't going to have an empty system, you yourself said earlier it only took a small amount of water to lower from 1.0 to 0.8, so why are you expecting pipes to be completely drained of water?
The noise you hear when you open the isolation valves is it pressurising, not filling
The noise you hear when you open the isolation valves is it pressurising, not filling
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Daveleaver
Afternoon
Sorry for late repky been working my a××× off lol yeah i hear ya on the pressure thing when its isolated and ive left it a while the flow pipe in the loft going to the cupboard 3m is empty i can take it right out the joint
Sorry for late repky been working my a××× off lol yeah i hear ya on the pressure thing when its isolated and ive left it a while the flow pipe in the loft going to the cupboard 3m is empty i can take it right out the joint
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Daveleaver
Afternoon
Sorry for late repky been working my a××× off lol yeah i hear ya on the pressure thing when its isolated and ive left it a while the flow pipe in the loft going to the cupboard 3m is empty i can take it right out the joint
Sorry for late repky been working my a××× off lol yeah i hear ya on the pressure thing when its isolated and ive left it a while the flow pipe in the loft going to the cupboard 3m is empty i can take it right out the joint
when you isolate the boiler you are isolating the expansion vessel!
the pressure in the rest of the system will drop and loose water through the leak.
when the pressure has gone, which wont take long there will be no more leakage as the system is sealed.
when you open the valves to the boiler the pressure is then stabilizing at 0.8bar this will be due to the expansion vessel.
so when the valves to the boiler are open the expansion vessel will be pushing the leak and emptying the pressure down to nothing.
the pressure in the rest of the system will drop and loose water through the leak.
when the pressure has gone, which wont take long there will be no more leakage as the system is sealed.
when you open the valves to the boiler the pressure is then stabilizing at 0.8bar this will be due to the expansion vessel.
so when the valves to the boiler are open the expansion vessel will be pushing the leak and emptying the pressure down to nothing.
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Daveleaver
Right! Im getting somewhere now Simon thank you for taking the time to explain that to confirm i understand when isolated at the start its got a bar same as the boiler enough to push out the leak which dissapates quickly to the point where it wont leak aby more. When un isolated the expansion vessel is constantly applying pleasure which is forcing the leak out . Which therefore means my leak could indeed be anywehere.
Something strange happened btw i had to remove a radiator the other day downstairs as it was ij my way i drained the whole system down now when i have put everything back and pressurised its only dropped from 1 bar to 0.9 over night as assposed to 0bar
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