Hot tap running dry - not sure why?

It's a conventional tap, I'm guessing -ie a multi-turn rubber washer type?

Almost certainly it's simply down to expansion of the innards which closes the tap off as it heats up. What happens is that the screw thread that drives the washer up and down as you turn the handle has partially seized and doesn't open the tap as far as it should in the first place. Then, as it heats up and expands, it shuts it back orf.

Solution? You need to either replace or disassemble the tap. Remove the handle and undo the large nut underneath - try and remove the whole workings as one unit. Take it apart - very obvious and easy - clean out all the gunk and coat liberally with silicone grease (every home should have a tub...)

Refit - and go WOW! at your new smooth-running fast-flowing tap.

 

And turn off water before you disassemble the tap...

 

Och, I wanted him to learn that lesson the hard - wet - way

 

MIght be a her.

 

Listen - I am NOT thinking what you are thinking...

 

I reckon you need to flush the pipe through. Gunk in there and the more it runs, the more it blocks.
Turn the valve off under the sink. Remove tap, and slowly turn the valve on under the sink until it flows without gushing everywhere obviously. Rinse the tap under the cold tap and put back together.

Mr. HandyAndy - Really

 

Hi, could you disconnect the water supply below the kitchen tap, then turn the water back on, and see what the flow is like ?
Good flow means tap u/s, part blocked etc.
Poor flow = supply fault, blocked/restricted flow upstream, are all valves turned fully on that supply this tap ?

 

What's the cold tap like? I mean, does it 'feel' the same? does it turn open as many times? Does the cold tap turn smoothly all the way until it comes to a 'clunk' halt? And does the hot do the same - or does it come to a sticky end?

(If you do not have isolating valves on the pipes supplying the taps, fit them - full bore types - as part of the job.)

 

And, um, will you be wearing a tight tee-shirt when doing this job?

 

Don't think thats the sort of gutter talk we want on here. So apologise's to the OP on his behalf.

 

I'm sure DA is quite capable of apologising himself, should he see fit to do so.

 

Ooooh - I bet you got all hot and sweaty as you typed that?

Yes? Photo please...

 

Sorry, Bodge...

 

Not to me you idiot, to the OP (chust kidding )

 

Sounds like an airlock to me.

 

"AIRLOCK!" Ooh-er, missus!



(Hang on, that ain't really rude at all...)

 

Sorry for getting my sorry wrong...

 

Beat me too it ,it's an airlock