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Yeah, exactly. Must be some restriction in the pipe. Could there have been some water saving restrictor added to this pipe? Can i adjust the minimum flow rate on the boiler? Am i going to have to go under the floor to have a look at the supply pipe to the bathroom sink?

Sorry to keep this thread going but I've discovered something pretty weird. It turns out that increasing the bore on the pipe hasn't fixed the problem. The tap, when moved to the hot position is still cold. However, if i turn the shower on, the sink tap gets hot. I've no idea what the hell is...

The shower is fed by the combi. When we moved in we had pipes installed under the floor for the shower. The pipes used to come through the ceiling but still came from the combi. We live in a bungalow so have no water in the loft. The full bore valve seems to have improved the flow just enough to...

The only other hot tap we have is in the kitchen and it is fine.

Ok, so I removed the pipe coming from the iso valve to the tap and tested the flow. It was still slow. I then replaced the iso valve with a full bore one. Still the flow is the same. I’m guessing I must have a blockage or a kink in the pipe or something else ‍♂️

Cheers, no it's def a combi. Its an old Worcester Bosch 28CDi. I've done some of this before, I just wanted to check best practice

Ok, we moved in and the tap didn't work correctly. Hopefully its the valve. It's a combi boiler. Is that a low pressure system? If it was to be the valve, I simply turn off the boiler, to stop the flow of hot water and replace, right?

Cheers If it's an issue with upstream of the valve, i.e in the pipe, is there anything i can do to try and unblock it without ripping the bathroom to bits and replacing it?

Ok cheers, I'll try that tonight. This is only testing upstream of the valve though, right? I'd need to replace the valve to check if the valve was faulty?

How would I go about testing these fittings without removing them and having no control over the water? Cheers

They're compression fittings on plastic pipe with a flat head screw controlling the flow. Ive had the tap running, turned the valve off and the tap has completely stopped. When i open it again fully i get the trickle. The pipes go under the floor from there, under the kitchen and then to the...

Cheers for replying Terry. Yeah, I have isolation valves on both the hot and the cold below the sink in the vanity.

Hi folks, So I have a mixer tap in my bathroom and when I move it to the hot position the water trickles out. It never gets hot, I assume because the flow is not great enough to kick the combi boiler on. I replaced the tap thinking it was that, same problem. If I move the tap to the middle...

Hi folks, Does anyone know where I can buy a P-trap with more than two inlets? At present my dishwasher and washing machine's drain hoses are connected to the trap attached to my kitchen sink but I need to add a 3rd appliance which has a drain hose. I've had a search but to no avail...