any plumbers out there??

[scottbott]

I just want to pick someone brains as we have a problem with a hot water tap in our bath

[fullsunian]

Normally loads at shows, try a T4 forum

[what2do]

Fire away, what's your problem?

Mitch.

[scottbott]

thanks,we recently had our down stairs toilet redone,new toilet,sink,taps vanity unit and heated towel rail,shortly afterwards the hot water tap upstairs in the bath has gone to a trickle,I could pee quicker,every other hot tap is ok,any ideas?

[what2do]

This is going to be one of those things that isn't likely to be attributable to anything in particular, just coincidence that you've had you're plumbing altered recently. Is it a mixer tap or solo? Does it have a plastic diffuser in the end? You'll need to get down on your knees to look up the 'spout' to verify this. It's possible that the flow is being restricted by some dislodged lime scale.

What about the hot basin tap, is that ok?

Let me know your findings, Mitch.

[Oldiebut goodie]

I moved into a house that had a tap like that - it turned out to be an airlock which I solved by sticking a hose from the mains onto the tap and blasting it back up. Just a possibility.

[meggles]

My contribution to possibilities: We recently did some plumbing (amateur DIY) and I put an isolator valve in the system. Very slow water flow followed. Quite a while later after much searching and head scratching I discovered the isolator valve was only partially open. doh!

[New Kentish Campers]

I moved into a house that had a tap like that - it turned out to be an airlock which I solved by sticking a hose from the mains onto the tap and blasting it back up. Just a possibility.

Agreed, most likely the problem, I've done this myself from replacing a HW tap. If your plumber turned the supply off to replace the tap, it's likely air became trapped in the pipe. By attaching a length of pipe from a mains cold water supply and the other end onto your bad tap's outlet, just open the duff tap and then turn the cold on for a minute or so. That will force the air out. Remember the incoming mains will likely be a good 3/4 bar pressure + so do it gently at first and not full blast. Have a few old towels to hand as you will likely get a splash of water here and there.
And I'm assuming you dont have a sealed system as I'm talking of a conventional system where your hot water is fed via a cold water storage tank in the loft. If you have a sealed system, then I dont know if this idea might work so best check with your plumber.

[garry247]

1. Isolator valve not fully open
2. Isolator some valves will restrict flow and some will not (Full Bore Isolating Valve)
3. Air in the system


Check with your plumber, or if you can trace the hot water pipe to your downstairs hot tap and see if plumber has put a valve in there.

if it is the valve and its fully open, swap it out for a Full Bore Isolating Valve.

note. If you have a combi i would not push water from cold into the hot tap.


G

[scottbott]

thanks for the replies,will have a go at it this weekend,also just had the cold water pipes banging,opened up the cold tap and it stopped,never done that before

[dumbo]

air in system right here goes go the new cold tap and hold your hand palm under the tap and slowly turn it on till on full for ?40second to a minute then try if not keep trying couple more goes
simon

[what2do]

air in system right here goes go the new cold tap and hold your hand palm under the tap and slowly turn it on till on full for ?40second to a minute then try if not keep trying couple more goes
simon

This method won't work with WRAS approved taps because they're fitted with non return valves. However,there's tonnes of taps for sale in the DIY chains which don't comply with water regs, so it's worth a bash as it'll not do any harm.