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thanks for that i will check and let you know. If the pressure relief valve needs replacing, is it something I could do. I have a basic understanding of plumbing, but have not gone near boilers before.

Will have to check the pipe in the morning as I am not at home at the mo. Also will find out the boiler model when I get back and let you know. I didnt realise the model would make a difference to a problem like this. Sorry to be stupid - and thanks for you help so far

sorry do you mean if expansion pipe is dry, the p.relief valve is leaking. Or if the pipe is dripping, the valve is leaking? Also if the valve (which i assume is inside the boiler) is leaking, would i not see water around the boiler?

Can anyone help me. Have a gloworm combi boiler. Pressure dropped to nearly zero. So topped back up using the filler loop. Fired up the heating but pressure keeps dropping, so i have to keep topping it up. It as if the water is escaping somehow. Have checked around all rads and boiler but cant...

thanks for pic..... makes sense now .. think best to try to change for a low pressure

sorry dont know what happened with my text then MOD press the edit button and put it in :wink:

sorry but a bit confused, I understand that cold feed comes from loft tank (that is the case) Can i therefore put a pump on this feed?. Hot feed comes from the cylinder, can i put a pump on this feed (dont get that it has to go back to the cylinder? .... lets assume for a mo that the cylinder is...

there was an old shower there before (gravity fed) , so i am only assuming that tanks can handle the volume. The cold is supplied by its own seperate cold tank, not sure if hot cylinder is big enough. Do you mean if pumps are fitted the tanks cannot supply enough water quick enough for pumps to...

Hello ChrisR - have spoken to Hansgrohe, they say that a 3bar pump is needed for adequate pressure. The problem I have is how to put one in. The bathroom has now all been re done, and I dont really want to rip it all out again. The section is ready for the shower valve, the cold feed is in 22mm...

instruction are really basic - just a picture of how the unit fits together. Absolutely no mention of whether only work on high pressures

waterways in this unit seem about 15mm. Is that no good for gravity fed? re pump, have thought about it but cold feed comes from roof and hot feed comes from under floor, so the too runs never get near each other to put both through a pump. Would i have to re run pipes or have a pump on hot and...

thanks for info - will check the site. I didnt know you had to have a different type of shower unit for gravity fed. Reckon ive made boob.

the flow from the feed pipes without the shower unit connected is fine (not measured but def more than 6ltrs per min) It is bad when it exits from the unit. I have temporarily used the old shower head, and get this poor result. The head (tank to shower head) has not changed

Hi there hope someone can help me. I am replacing an old aqualisa shower unit, with a new Axor Uno unit. The old one was gravity fed, and the new one is in exactly the same position, although there are now several extra elbows and fittings. The pressure on the old one was fine, but having fitted...

thanks for your help Kevplumb ps. you are all right noone knows where the key is!! owner has no idea what it is or looks like - can anything else be used, or do I need to buy one direct from Worcester?

The owner has told me boiler is a Worcester CDI. Does that help? thanks so far

thanks - this boiler clearly has no braided loop ( I have seen these before). I havent moved into house yet, was given acces to do this radiator so am waiting for boiler type etc. If it is an internal loop, can you explain how I would operate . When I first took rad off. pressure was 0.5 but...

I will note the make of boiler, just didnt note it before came to use computer. When you say some boilers have internal filling loop, do you mean they self fill back up or that you need to take the cover off to operate the loop? thanks for help so far

Hope someone can help. Just taken a radiator off. Heating is via a combi boiler, dont know the make i am afraid. Pressure on boiler is at 0.5 bar. firstly is it safe to run the system at 0.5 bar, as i cannot locate the filler loop. There is no sign of one around the boiler. Anyone know where...

it is a tin bath, with adjustable legs but even with this perfectly level it still feels very wobbly, i really would have thought it needs fixing, but you reckon definately not?