Discuss Pushfit heating pipes in the Central Heating Forum area at PlumbersForums.net

Messages
111
Reaction score
8
Hi
Is this a pushfit elbow?
Can the pipe be easily removed should I want to do. Is a release tool needed? Does anyone recognise the fitting? So, that I know what to by.
The drain valves are now leaking after draining the system and I've been told the need replacing

These look very similar

https://www.screwfix.com/p/drayton-drain-off-tail-piece-0705902/3450R?tc=GB7&ds_kid=92700020969588661&gclsrc=aw.ds&ds_rl=1241687&ds_rl=1245250&ds_rl=1249404&gclid=Cj0KCQjwrpLoBRD_ARIsAJd0BIUkivMbMaMcfteBuqfLxx0viihAVyKT__seBmHUmG3kF61a5NjsBEgaAt19EALw_wcB

Thanks

IMG_20190615_200611819.jpg
 
Shower Power Booster | PlumbersForums.net Official Sponsor
This official sponsor may provide discounts for members
OP
J
Messages
111
Reaction score
8
Hi. Thanks for the reply.
So, how do I disassemble the pipe from the elbow? I may need to cut the pipe shorter. Can it be reassembled once I've cut the pipe shorter, or is it a one time only fitting.
Thanks again
 

scott_d

Plumber
Gas Engineer
Messages
4,208
Reaction score
955
Push the white ring into the fitting and pull the pipe out.
Should be reusable if it’s not damaged.
 
OP
J
Messages
111
Reaction score
8
Thank you.
Especially at this late hour
Do you know of any videos showing demounting of these?
Thanks again
 

Harvest Fields

Plumber
Gas Engineer
Messages
9,648
Reaction score
2,297
The elbow is pushfit onto the pipe. But the drain off is compression. Make sure the system is drained fully before removing.
 
OP
J
Messages
111
Reaction score
8
I think it is fully drained mate, there’s another thread similar
Good morning all. Thanks for the video. I've used Speedfit before, so I am familiar with their use. I wasn't sure if this Drayton push fit (if that is what it is) works under the same principle. I know that some of these manufacturers have different systems.
Thanks again everyone. It means a lot that people are so willing to help and probably just as important, make no judgements. (Well, not publicly anyway. Hahaha)
 
OP
J
Messages
111
Reaction score
8
Just out of curiosity. If the ordered drain valves don't come today, is there something else I could buy from SF to cover the distance from the rad to the rad valve. Instead of the drain valve. I really need to get it done today. We've got no heating or hot water. I've seen items called tail valves and tail extensions. Would these do it? I know it means that they wouldn't have drain offs, but I'd have to deal with that in the future if necessary. I've taken some pictures to show dimensions.

Thanks again

IMG_20190616_100649272.jpg

IMG_20190616_102225096.jpg

IMG_20190616_102326890.jpg

IMG_20190616_102336454.jpg

IMG_20190616_102356640.jpg
 

AMGasServices

Gas Engineer
Messages
682
Reaction score
175
Just out of curiosity. If the ordered drain valves don't come today, is there something else I could buy from SF to cover the distance from the rad to the rad valve. Instead of the drain valve. I really need to get it done today. We've got no heating or hot water. I've seen items called tail valves and tail extensions. Would these do it? I know it means that they wouldn't have drain offs, but I'd have to deal with that in the future if necessary. I've taken some pictures to show dimensions.

Thanks again

View attachment 39184

View attachment 39185

View attachment 39186

View attachment 39187

View attachment 39188

Try this

https://www.screwfix.com/p/tesla-x-15mm-telescopic-trv-extension-piece-15-35mm/3628R?tc=UA3&ds_kid=92700020969588673&gclsrc=aw.ds&ds_rl=1241687&ds_rl=1245250&ds_rl=1249404&gclid=EAIaIQobChMI5JPajuHt4gIVT7vtCh3LrAv0EAQYASABEgIxbvD_BwE
 
A

Aire

Just out of curiosity. If the ordered drain valves don't come today, is there something else I could buy from SF to cover the distance from the rad to the rad valve. Instead of the drain valve. I really need to get it done today. We've got no heating or hot water. I've seen items called tail valves and tail extensions. Would these do it? I know it means that they wouldn't have drain offs, but I'd have to deal with that in the future if necessary. I've taken some pictures to show dimensions.

Thanks again

View attachment 39184

View attachment 39185

View attachment 39186

View attachment 39187

View attachment 39188
These will get you up and running
https://www.screwfix.com/p/tesla-x-15mm-rigid-trv-extension-piece-55mm/2456R?kpid=2456R&ds_kid=92700020969711952&gclsrc=aw.ds&ds_rl=1241687&ds_rl=1245250&ds_rl=1249404&gclid=CjwKCAjw0ZfoBRB4EiwASUMdYcmhSXyeOYgIuXyhUB6fa5w3tpwTZk64DU5W1XkXFUrfs8c6V_t3nRoCQDwQAvD_BwE
 

Marc Bowers

Gas Engineer
Messages
13
Reaction score
7
You could just isolate the radiator by shutting down both radiator valves (just remember how many turns you close the lockshield valve (the one with the loosely spinning head) down by so you don’t mess up the system balance when you refill the rad later). With both valves isolated you should be able to refill the system and restore heating and hot water to the rest of the property. It would be prudent to have a couple of caps to cap the radiator valves off with if they let by a little. (The one in the picture needs a 1/2” cap, couldn’t tell you if the other side is the same). That way you can ran as normal, replace the drain off cock when it comes in and just refill that one radiator afterwards.
 
OP
J
Messages
111
Reaction score
8
Hi Mark bowers. Thanks. Sorry what do you mean by Caps. Would you be kind enough to drop me a link for the item? SF is open now. Haha

To other guys with there suggestions, I have just watched a very useful video is a telescopic tail being installed. With a link to the item.
https://www.screwfix.com/p/x-15mm-rigid-trv-extension-piece-0-65mm-2-pack/10954

Three questions.
1.Would your Tesla version be better?
2. Are these telescopic ones reliable? I guess the tube slides within a o ring.
3. Is there enough room within the rad inlet hope for the full length of the extending tube. Or would it require cutting.
I must admit, they look really good.

This is the video

Should the guy really have wrapped the olive and compression fitting with PTFE tape. I thought you shouldn't with compression. He also wrapped the tail that goes into the rad, even the it had its own seal.

Thanks again everyone. I will keep saying it... your help is much appreciated
 
A

Aire

Hi Mark bowers. Thanks. Sorry what do you mean by Caps. Would you be kind enough to drop me a link for the item? SF is open now. Haha

To other guys with there suggestions, I have just watched a very useful video is a telescopic tail being installed. With a link to the item.
https://www.screwfix.com/p/x-15mm-rigid-trv-extension-piece-0-65mm-2-pack/10954

Three questions.
1.Would your Tesla version be better?
2. Are these telescopic ones reliable? I guess the tube slides within a o ring.
3. Is there enough room within the rad inlet hope for the full length of the extending tube. Or would it require cutting.
I must admit, they look really good.

This is the video

Should the guy really have wrapped the olive and compression fitting with PTFE tape. I thought you shouldn't with compression. He also wrapped the tail that goes into the rad, even the it had its own seal.

Thanks again everyone. I will keep saying it... your help is much appreciated
I don't like the telescopic ones, I've had them leak in the past. The rigid tesla ones work much better in my opinion, if they're too long you can just cut them down. Ptfe round the threads into the radiator and nothing wrong with a little ptfe round the olive, just not round the valve threads, it's pointless.

As Marc says though, you can just turn the valves off, so you can refil your system and just leave that rad empty. and the caps he means are these
https://www.screwfix.com/p/blank-nut-x/51939?kpid=51939&ds_kid=92700020969710470&gclsrc=aw.ds&ds_rl=1241687&ds_rl=1245250&ds_rl=1249404&gclid=CjwKCAjw0ZfoBRB4EiwASUMdYcYKPXpVohDH6hwFpRUAWTP8qKShv3lnK89i2J0Cb1rcBj6qGt1J6BoCDc0QAvD_BwE
If you have a trv then definitely recommend to use one.
 
OP
J
Messages
111
Reaction score
8
Hi. Yes, I did think about turning off the valves and refilling. But, everything in this house seems to leak after isolating. Even rad valves. So, thought I'd just leave them as they are. Incidentally, how would I cut the rigid extension tails to the correct size. I have a grinder.

Thanks again
 
OP
J
Messages
111
Reaction score
8
So. This is where I'm at. New Drayton drain valves installed. One was very difficult to get to. Is it imperative that you screw the tail all the way in to the end of the thread?
It got very tight to turn but the drain outlet was not yet vertical. I counted how many turns to remove it. I then removed the PTFE and replaced, counting revolutions. But it weeps. Only slightly,

I've left it for now since it's not bad.
I've filled the system. Bled all the rads.
I then pressurised the system to around ¾ bar, below the pressure at which the boiler usually switches it self back on after a low pressure fault code E119, which is around 1¼ bar. (You will see a little black dot on the photo of the dial.) It's a Baxi Duo Tec Combi 33HE is
However, on this occasion the boiler didn't switch on until 1½ bar.
Should I run it at this. Or should I drain some water, to lower the pressure.

Thanks again.

IMG_20190616_185140823.jpg
 
OP
J
Messages
111
Reaction score
8
Oh wow. I've not ran the central heating yet. But tried a hot water tap. The temperature rose very quickly, up to 94c. I switched of the tap. I opened up the heat exchanger automatic air vent. Which released some air then water, but only a little water. I can open the pump automatic air vent. I could try some grips on it. But I did open the screw on the front of the pump and released air and a teeny bit of water.
What do I need to do.
Surely this ain't right
Thanks
 
OP
J
Messages
111
Reaction score
8
Hi. On top of the boiler.
After venting, It settled down a bit.
I'm just slowly raising the hot water temp and venting after a few minutes.
Hopefully I'm going the right thing
I'm not going to put the central heating on until tomorrow.

IMG_20190616_200406854.jpg
 

ShaunCorbs

S. Mod
Plumber
Gas Engineer
Messages
23,544
Reaction score
6,431
turn the heating on with the heating temp dia down pump should run for a bit
 
OP
J
Messages
111
Reaction score
8
Ok. Oops. Ive been periodically turning the hot tap on and venting. Only venting after the pump has stopped running though.

I'll the run heating turned down tomorrow. I didn't want to run the heating at this hour on a Sunday night in case all the repairs I've made leaked when running. Haha.
All but one are ok at the moment, (the rad tail I mentioned earlier) whilst the system is filled, but not running hot.

Will I have done something detrimental by running hot water?
I've only run it around three times, probably less than a minute on each occasion. The digital temperature gauge did read around 10c - 15C higher what the dial is set at. But at least it's not jumping up to 90C+ now.
Thanks again everyone
 
OP
J
Messages
111
Reaction score
8
Good Morning.
Are you all fed up with me yet?

Update. As you know, last night I fired up the boiler after re-filling the system following some repairs I had made...
Actually I spare you all the details, I perhaps give to much

Long story short. I've got the central heating system running low temp. I've set the dial at 40C and that is round about where the boiler is keeping the temperature. As indicated by the digital display.
However, the hot water has been used, (not whilst the central heating was running though) and the temperature on the digital display showed a rise up to 60C, but importantly the dial was only set at 42C.
Should I be worried about this?
I don't remember it doing this before the system was emptied. All though I can't be certain.
I have vented the pump and heat exchanger automatic air vent on top of the boiler. And vented all the rads a third time.

Thanks again everyone.
 
Last edited:
Plumbase - PlumbersForums.net Sponsor
Plumbing Advice - Find Plumbers Jobs
Power Shower Booster - Official PlumbersForums.net Sponsor
Wetroom Store - PlumbersForums.net Sponsor
Corgi Direct - Plumbers Forums Sponsor
uHeat Forum Sponsor - PlumbersForums.net
Test4Less PlumbersForums.net Sponsor

Latest Plumbing Advice

Top Bottom