Lack of pressure in mixer tap

Status
Not open for further replies.
T

thumbsup

I have got a monobloc kitchen mixer tap which opens, shuts and mixes cold/hot water but it has lost pressure. It has a cartridge valve which operates like a joy stick i.e. up/down for flow and left/right for mixing. The cartridge valve does not show any signs of wear and tear or any breakage. The tap is about ten months old. Can the valve be repaired? Are these type of valves available?
 
Are you sure it's the tap that's at fault, rather than the supplies to the tap? Is the flow reduced equally on both hot and cold, or just one? (Look at the flow with 100% hot, then 100% cold tap positions.) Is the rest of the house H & C water supply OK? Could crap have got into the pipes recently for any reason? Is there any garbage stuck inside the cartridge?
 
Last edited:
have you lost pressure any where else in the house? if not cartridges are available for many taps but you will need to identify make and model regards turnpin🙂
 
Thanks Big Al once again.
There is lack of pressure in both all hot and all cold water.
The water pressure is fine in rest of the house.
The cartridge looked fine and clean. There was no foreign material in it.
I doubt that some thing could have been struck in the pipe because pressure is lost in both hot & cold water supply.

Thanks for your response.
The water pressure is reduced only in this sink tap in the kitchen. The pressure in rest of the house is fine.

Thanks Turnpin for your response.
The water pressure is reduced only in this sink tap in the kitchen. The taps in rest of the house are OK.
 
Last edited by a moderator:
I have replaced cartridge of the mixer tap but water pressure has not improved at all! What else shall I look for before replacing whole of the tap? I am not confident about any joy by fitting the new tap.
 
If the pressure was always like this since they've been fitted chances are the service valves just before taps need opening up a bit.
 
Pressure was OK for about 6 months since installation, it started to reduce intermittently and now permanently reduced for last few week. Do you mean service valve as isolation valves to the taps? The isolation valves on both hot & cold water supply are fully opened. A garden tap branched off from just under the sink has normal good pressure!
 
check your service valves are fully open, they can closethemselves over time, cost a customer £50 to find that out this week.
 
REDSAW34 said:
flexi hose problem or ballofix
Click to expand...
Had an example today with the 2 surface mounted handles (don't know what these are called!!!)and flexis going into single spout below sink and it was on a combi and the hot was trickling out and it turned out to be where the backnut was just a tad slacker than the cold valve and it had turned slightly,kinking the hose.
 
If the service/isolation valves are ok it must be limescale build up. What taps do you actually have and are they definitely monobloc? rather than just mixer taps.
 
i was about to say lime scale as well with it being intermittent lime scale could have moved but now has finally blocked the actuall spout try new mixer taps
 
I think it is monobloc as it has got only one control lever. It is lifted up to open and turned side ways to adjust the water temperature. The lime scale contamination could introduce obstruction in turn reducing the pressure as you have rightly pointed out but fortunately water is very soft in our area and there is hardly any presence of mentioned effect. Water is so good that we use tap water in iron and do not require any salt in dishwasher. I suspect there must be some blockage at/in base of the tap. I shall keep you posted outcome of my investigation.
 
have you tried checking if the ceramic discs are staying lined up properly. If their is a manufacturing fault of tap and wrong size cartridge is being used the pressure of your water ( which sounds like it is very good elsewhere ) could be affecting alignment of the discs pushing them sidewards.Long shot i know but when can you ever rule anything out
 
Yes I have checked the cartridge & ceramic discs within at first instant. It seemed in perfect shape & condition. However, I have tried a new cartridge but there wasn't any improvement.
 
see what the pressue is like if you take the cartridge out and slowly turn on the isolation valves so water gushes out the controler-hole. do the same after taking off the spout but with the cartridge back in. if one or the other doesn't produce much pressure it might narrow it down. if both spurt like a trooper then something is stopping it with the cartridge control or in the spout.
 
Flexi's can pick up debri that 15mm pipes don't. Also, the isolation valves are restrictive and therefore likely to be a culprit for debris collection. Flexi's dont last that long anyway (when compared to copper pipe). Other option is that you may have a sliver of mdpe pipe or ptfe stuck in the tap spout itself, ive seen this before. Best o luck!
 
First of all I must thank every single fellow member of the forum who have paid attention to my problem,devoted their valuable time advising/suggesting to me how to rectify it.
All of you would be surprised to know "there was an unexpected severe blockage in the spout". At tip of the spout there was a filtration cartridge which had clogged up with a strange black sandy debris. The blockage was cleared by dismantling this cartridge which is about a three quarter of an inch in length comprising of three very fine metal meshes and one plastic double walled unit (half of an inch in depth) which was packed with the said debris. I managed to get rid off the debris leaving it in a pot of boiling water for about five minutes. The amount of debris was about a full tea spoon!
My sincere thanks once again to all of you who have helped me to resolve this mysterious problem.
 
Status
Not open for further replies.

Featured Content

Back
Top