Ground floor hot water tap started running very slowly

[Neil23]

We have a downstairs shower room/toilet and the hot water tap yesterday started running VERY slowly on the sink - virtually down to a trickle.

Turned the tap on this morning and hot water was coming through fine again - went back a 10-15 minutes later and the water was back to a trickle...

Any suggestions?

 

[Scott_1979]

Is it that hot tap only that is affected? I've had this before and it was a blockage within the tap body itself. The pressure would build inside the tap when it was off giving it around 10-15 seconds of runtime then it would stop completely. Replacing the tap solved the issue.

 

[Neil23]

It is just the hot tap...

 

[Christopher buzzard]

Could be the tap body. When the tap is turned on it isn't drawing the tap washer up higher enough off the tap seating to allow the water to run freely. Taken apart and grease the o rings should sort this.

 

[Neil23]

Thanks - I assume water supply needs turning off to do this? Although not sure where the 'supply ' for this would be... from one of the pipes with a 'screw-head' type isolating valve in the hot water tank cupboard? - water pipe from the sink goes straight into the wall...

 

[Neil23]

Would connecting a 'hose' from the cold tap to the hot tap be of any help?

 

[Christopher buzzard]

Yes the water would need turning off to do this. There may be a valve under the basin? Sounds like you are talking about the right valve to turn off hot water in the cylinder cupboard. If it's the gate type, it will have a red head. Put a picture up on here if you need it identifying. If it won't budge, don't force it. You will have to drain the main CWS tank in the loft otherwise.