Outside tap dilemma

[elkay16]

just a wondering as to what you guys are using to insulate for example, a 15mm copper pipe , penetrating through brickwork feeding an outside tap , when it is sleeved in 22mm copper.
I always fit an internal iso valve so in winter the tap can be isolated, i always elbow the pipe down into the backplate elbow compression fitting so that the tap is at the lowest point to enable draining when isolated, but i find the actual insulating to be a real problem.
Is expanding foam down the sleeving the only answer cos i hate the stuff

Many regards

 

[Robtheplumb]

You don't need to insulate the pipe going thru the wall, as long as you have the iso valve and double check valve inside then you can turn the water off and open the tap to let it drain.

 

[elkay16]

thanks rob

I have found the stand alone dcv to be very problematic either jamming or in worst case completely blowing when subjected to possible frozen pipes as the ice plug has nowhere to expand
the new outside taps have integral dcv complying with water regs i think so if this is the case then all should beok fom what your saying
as said, iso valve internally as standard anyway

 

[Centralheatking]

It might help to run the pipe through the wall in plastic, hep or like
which I understand will cope with freezing and thawing without splitting
if you get caught out by a cold snap without draining down.

centralheatking

 

[elkay16]

I like to have a nice soldered elbow into my outside tap and besides am a bit of a traditionalist so no plastic for me ha ha

thanks anyway

 

[Gray0689]

All look crap use a wall plate with tube attached looks far better

 

[elkay16]

All look crap use a wall plate with tube attached looks far better

in your opinion!!!

 

[Gray0689]

Take a look at them and tell me if its still my opinion

 

[elkay16]

Take a look at them and tell me if its still my opinion

ok my opinion too mr gray

 

[tamz]

thanks rob

I have found the stand alone dcv to be very problematic either jamming or in worst case completely blowing when subjected to possible frozen pipes as the ice plug has nowhere to expand
the new outside taps have integral dcv complying with water regs i think so if this is the case then all should beok fom what your saying
as said, iso valve internally as standard anyway

Outside taps with integral dc valves are not permitted for the reason in your first sentence.
A seperate dc should be fitted inside the building where it is not subject to freezing.

 

[tackleburger]

Mmmm.. The taps with check valves built in are okay but...think about it you isolate inside open the tap to drain and what happens...zip no pressure to open check valve so tap full of water outside. I was using them but I had to replace two last winter because the C/v just burst with the ice in the tap. I now fit a DCV inside or a drain off outside.

 

[REDSAW]

in your opinion!!!

mine too and quicker to fit.
i use them with an internal flexi after iso to pipe run. gives them an amount of 'swell' if frozen, although should be drained down in winter.

 

[kirkgas]

All look crap use a wall plate with tube attached looks far better

i have fitted tons of taps with elbow facing down into wall back plate, but having used the round flange type with the pipe going straight through the wall behind it there is really only 1 winner for neatness, as others have said there is no need to insulate pipe, as it should always be off during the winter