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Hi again Thank you for your responses. I have a thermostat vale - how do i fully shut this off before draining down the radiator. I do believe they do not fully close off the water supply?

Has anyone got any suggestions please? I am trying to drain down my heating circuit to change a faulty thermostat valve on the ground floor. i am a useful diyer but have a few questions before i start if i may ask? i have a few drops from the ceiling to may radiators, and i believe these...

what about the schraeder valve fitting/connector? and what size connector do you use?

unlikely to be a faulty mid position valve. the zone valve (2 port) if used may be letting by; but only if the upstairs has a different zone to the downstairs!!! probably reverse-circulation (the last tee rule not used)!! or a faulty anti gravity valve !

Hi again Is the Schraeder valve and schrader valve pump from Monumnet Tools any good ? I am thinking it is a good item (s) to have for when re-pressurising an expansion vessel?? Anyone else got these ??

ok thanks a lot john for your help. i'll need a schraeder valve connector then. where could i order one from? do screwfix do them? any good links to both that and the pressure gauge and pump please. :) thanks again for your kind help.

is a normal bicycle pump ok to repressurise an expansion vessel.? to what pressure do i pump it, how will i know its done ok? thank you for helping.

ok thanks will look. will try and get the first bit off!

i am def. supposed to remove the name plate? as the diagram didn't say that... and i can't get it off easily, any tip to help me get it off without damaging the unit? it's plastic by the way also if that helps? and i def. need to change the shroud seal ?

yes, on the website is shows one. i don't have the instructions anymore, the shower is over 10 years old!

oh yes just seen that. ok so i need the normal shroud seal then? how do i get to it though!!

according to the website there is a shroud seal and a gasket - maybe i should order up both parts?

i have tried to get the front bit off (similar to a tap head) - but the smallest/thinnest screwdriver i have is too thick still! what can i use to do this?

sorry the cartridge is for the thermostatic type but the maniual cartridge is for the manual mixer, according to the aqualisa site.

it's a manual mixer 430 - and apparantly it does have a CARTRIDGE and MANUAL CARTRIDGE!! ???

yeah the valve, sorry. it is a round dial type, wall mounted and the pipes not on show. i don't know if you prise the front bit of with a screwdriver or knife like you to with a tap top?

Mhy manual mixer is leaking (dripping slowly) and is gradually getting a little worse. So the seals must be worn (on the cartridge). But how do I access the cartridge to replace the seals. Or should I order a new cartridge up ? Thanks for any help

i just wanted to know what they were for reference ...

what are drop level radiators? i have heard of this term but do not know what it means? is it bad design? can it be a problem?

ok i will do this tomorrow evening. flush it through to get the sludge/muck out. But, will i need to then add a whole load of inhibtor to the f & e tank as i will be adding fresh water in to refill the drained radiator. probably i am being too cautious and stupid here though!! the...