Discoloured water in kitchen since fitting outside tap

[simondyntDBeK]

Hi,

I bought and fitted a DIY outside tap kit from B&Q which is fitted and working fine.

Problem I'm having is when I run the kitchen tap (which the outside tap is fitted to) the first bit of water the comes out is discoloured. It's worse in the morning and was horrible after we'd been away for a few days.

What have I done wrong?!

Cheers

Simon

 

[stephenf8542]

Is any thing connected to the tap ?

 

[simondyntDBeK]

Outside? Yes a hosepipe.

 

[stephenf8542]

thats your problem! water is being drawn back into your pipe from your hose disconnect it when not in use or fit a non return valve

 

[simondyntDBeK]

Thanks stephenf8542 - I'd assumed that if the outside tap was switched off it worked both ways!

Will give it a go.

 

[kirkgas]

did you fit a double check valve on the internal pipewrok to the outside tap, i would assume not, but perhaps it is faulty

 

[simondyntDBeK]

It was just one of these:

http://www.diy.com/diy/jsp/bq/nav.jsp?action=detail&fh_secondid=9270772

 

[kirkgas]

It was just one of these:

http://www.diy.com/diy/jsp/bq/nav.jsp?action=detail&fh_secondid=9270772

the blurb quotes "almost"everything you need!! looking at the valve it looks as if it has some sort of check valve, possibly single, our water regs say double check valve should be fitted internally so i would say this set of kit is inadequate

 

[lkuya]

It was just one of these:

http://www.diy.com/diy/jsp/bq/nav.jsp?action=detail&fh_secondid=9270772

i was looking at these the other day,

was thinking you hav to be mad to buy it as i assume u know next to nothing about plumbing to use it,

and tapping into a cold main can quickly turn into a disaster if u don't know what your doing

 

[JohnD]

this is one of those horrible connectors that you clamp onto the water pipe, and screw it till it punctures the pipe with a spike?

you do not describe the stuff coming out of the tap but I expect it will be green corrosion from the damaged pipe. In a few months it will stop as the pipe gets covered with a new layer of scale or oxide.

 

[leakydave]

If the end of your new hose has been left in a bucket, pond or other water feature then you will probably have been siphoning that into your fresh mains water...

Your water board will be delighted... fit a check valve asap!

 

[JohnD]

out of interest, how do you think a water pipe at mains pressure is going to suck up a hosepipe through a closed tap?

I am assuming that the fire brigade did not cause negative pressure at the exact moment by putting powerful pumps on the main.

 

[leakydave]

maybe during installation the mains was turned off and tap left open?

 

[simondyntDBeK]

Sadly, despite unhooking the hose from outside, the water is still discoloured.

I've posted a little video to give you a better idea:

http://www.youtube.com/watch?v=_ScT5mHzcvo

I've been away for the weekend so it's particularly bad.

Any suggestions?

Ta

 

[JohnD]

where are you?

what is the incoming watermain made of? looks like rust to me.