I did this today, not a good Idea, panicked when the water came spurting out, thought I was Jed Clampett with the black sludge, thought I had struck oil. and the valve went on crooked.because I panicked So I have small drip. Plan to do it with a hose. Great video, they give you confidence to tackle these jobs And now I don’t do anything without checking with you out first. Thank you
Big thank you! Had to swap a draincock that was completely rounded off and wouldn't drain. Ended up having to remove the olive (as per your other vid) as for some reason the old 10mm nut was ever so slightly too small to connect (and yet 8mm wouldn't fit either). Despite being a DIY phobe it's now all fixed (even if I am soaked through!)
We all have our own way of doing this , for me i like the idea of a little boswhite or similar in the valve, and on the rad section,i always feel a bit happier, great advice video,.
if one has a vented system with a header tank then it is possible to use a pair of bungs to temporarily bung up the vent pipe and cold feed. This creates a vacuum and after running a bit of water out it should stop fairly quickly. This method has worked a treat for me. Just have to remember to have only one open end at the time
+dereton33 It can depend on how smooth the tank connector is. That is critical. I find some have a nice smooth opening whilst others can have annoying ribs or grooves preventing an airtight seal.
well done I have a system that's been in 4 yrs and they forgot to put one in, I recently had a boiler fault and the water was filthy, so ill do it your way thanks
what do you do if your rad is in the cellar and you have no doors or windows? i want to drain down to fix some things and fit a drain valve like this video but in my cellar it is enclosed. thanks
@@dereton33 thanks. if i drain it the rad is only 2 inches off the floor will the water still flow out?? OR do i run the boiler so it pumps out??? basically i could drain it into a bucket but it would have to be a 1inch tall tub i guess then pour into bucket.
Hi mate, If I got a radiator downstairs with the TRV on one side and the drain off cock on the other side of the radiator. The boiler that I am using is combi one. What the procedures I need to do in order to replace the TRV of the radiator? Please tell me what I need to do in step by step and the things I need to be aware. I only know little about the job. I am appreciated for your help.
Hi Edwin, first drain the system by using the drain valve on the other side of the radiator. Fit the new TRV then re-pressurise the system using the filling loop to one and a half bars, bleed all the radiators, but keep re-pressurising the system as you do them. Once all the rads are clear of air make sure your boiler is once again at one and a half bars. That`s it.
hi.al great vid and a great idea.just fitted one to my radiator on a combi boiler system, my question is how do you use this drain off to drain just the one radiator and how do you use it to drain the entire central heating system? many thanks.
+dereton33 you can just drain that rad if you shut both valves off and open the drain off, it will drain the rad and not the pipework. this is if the valves are in working order!!
Hi mate, further more, I moved in to a new build house for two years. What do you think if I need to replace 5 TRV for radiators up to this moment for my house and I am going to replace the sixth. In your opinion, is there anything wrong with the system. You know my mum moved into her house for at least 14 years from new and never replace any of those TRV for her house. Thanks for helping
Hi, where is the link to the larger valves that you mentioned? The standard size available is 15mm X 1/2 inch but my radiator appears to be 1inch, is this typical for an old radiator?
Seriously though, this was a really useful video. Saved me a lot of grief. I thought I was going to have to drain the whole thing down by letting it dribble out of the valve nut into a tray and keep emptying that. The real tip was rotating the valve head so as to fit a hose and let it drain outside. It was a drop pipe system as well so had to tackle two radiators. Have now fitted drain off valves. Thanks once again for your great video.
Nice video. I have two questions. 1. Is it worth having the drain valve on all radiators on groundfloor? 2. Is there any problems in having them on all radiatorson ground floor? Thanks a bunch.
Hi there mate, I've watched many of your videos thanks! A quick question if you don't mind, one of the valves for my upstairs radiator is leaking, I can't stop a little drip. The wife doesnt want me to drain the system, doesn't trust me or something haha 🙂 tell me, if I disconnect the radiator as in this video can I replace the valve olive without draining the system? Hope this makes sense !
Hi its Paul McKay (see below) and I have just completed this job but without the thumb stopper trick. It was so easy I should have thought of it myself, but that is where your experience comes in. angle valve and drain and PTFE tape from Tool Station for less than £5! No leaks but still need to try it hot...
I need to fit this exact valve (the one with the larger nut) in a house with 13 rads and no drain off fitted. The rad closet to the back door has a leak from the nut connecting the copper pipe coming up from the floor. I presume I shouldn't I chance the quick change over method as the olive on that nut has obviously failed?
can you put a TRV on the drain valve elbow? I need to replace the elbow my TRV is on (the pin in the elbow has had it, it keeps getting stuck) so thought I could replace with an elbow / drain cock.
thanks, although I ended up getting a standard valve / trv. Shop only had one type of drain cock for sale which wasn't compatible with a trv. Draining a big radiator took longer than expected, going to look at getting rad clamps so I don't have to do this again.
I did everything he said to not to do before watching this video. I also tried the wrong side of the radiator with the thermostat. Watch this first before attempting the change
@@dereton33 I know what you mean Mr, I'd do what you did in some cases, but some new walls better will be ruined. Charging wise you charge for the work you do for them not matter what Mr. But after all Ive learnt alot from you and plus this tutorial taught me some. Thanks
I was just trying to show what can happen if you do not drain the system, but do a live change over. Getting an airlock after the long process of draining the system and refilling can take a very long time to sort out. So 5 mins to to change it this way or 3 to 6 hours the drain it out way.. Still I guess you get the chance to charge your customers more money that way. By the way no damage was done to the wall it all just cleaned off with detergent.
I just replaced 3 radiators i have single pipe system after that all my radiators not working all mean all 10 radiator take off air from all radiators still not working Please help me how to fix back to normal Thanks
Good video... confirmed two things for me, one that it is possible, and two that I probably don't want to try it!
The way you hold the water down so quickly was so epic!! Mad respect for the video, learnt alot from it
Ha ha thanks Max.
I did this today, not a good Idea, panicked when the water came spurting out, thought I was Jed Clampett with the black sludge, thought I had struck oil. and the valve went on crooked.because I panicked So I have small drip. Plan to do it with a hose. Great video, they give you confidence to tackle these jobs And now I don’t do anything without checking with you out first. Thank you
Never mind, it is all learning experience.
Al my good mate you never fail with your videos mate great work 🙏
Glad you like them! Thanks Ash.
Big thank you! Had to swap a draincock that was completely rounded off and wouldn't drain. Ended up having to remove the olive (as per your other vid) as for some reason the old 10mm nut was ever so slightly too small to connect (and yet 8mm wouldn't fit either). Despite being a DIY phobe it's now all fixed (even if I am soaked through!)
Nice work!
Fantastic, walk/talk through , your experience shines through and you made that very easy to digest thanks for a great tutorial 👍
No problem 😊
I have a seized drain cock so this is exactly what I need to do but may drain system completely to fit new valve/drain fitting. Thanks for the video.
No problem
This gentleman is just amazing! Thank you ❤
You're very welcome!
Great video, nerves of steel with that quick switch!😉👍
Real quick . Ha ha.
We all have our own way of doing this , for me i like the idea of a little boswhite or similar in the valve, and on the rad section,i always feel a bit happier, great advice video,.
Right on, thanks Peter.
if one has a vented system with a header tank then it is possible to use a pair of bungs to temporarily bung up the vent pipe and cold feed. This creates a vacuum and after running a bit of water out it should stop fairly quickly. This method has worked a treat for me. Just have to remember to have only one open end at the time
+Nick Collins . Never worked for me. Air seemed to get back in some how and down would come the water.
+dereton33 It can depend on how smooth the tank connector is. That is critical. I find some have a nice smooth opening whilst others can have annoying ribs or grooves preventing an airtight seal.
Had one bad experience in a customers house, always drained the system after that.
Please send us a question for me, but it is a good day 9th. The may not copy of
well done I have a system that's been in 4 yrs and they forgot to put one in, I recently had a boiler fault and the water was filthy, so ill do it your way thanks
You make it sound so easy and we all know the outcome. Water all over the place.
Have faith.
what do you do if your rad is in the cellar and you have no doors or windows? i want to drain down to fix some things and fit a drain valve like this video but in my cellar it is enclosed. thanks
Drain into a couple of buckets. Or use a pump.
@@dereton33 thanks. if i drain it the rad is only 2 inches off the floor will the water still flow out?? OR do i run the boiler so it pumps out??? basically i could drain it into a bucket but it would have to be a 1inch tall tub i guess then pour into bucket.
Great video. Do you foresee any issues using the same trick to replace the TRV?
No will be the same.
Hi mate, If I got a radiator downstairs with the TRV on one side and the drain off cock on the other side of the radiator. The boiler that I am using is combi one. What the procedures I need to do in order to replace the TRV of the radiator? Please tell me what I need to do in step by step and the things I need to be aware. I only know little about the job. I am appreciated for your help.
Hi Edwin, first drain the system by using the drain valve on the other side of the radiator. Fit the new TRV then re-pressurise the system using the filling loop to one and a half bars, bleed all the radiators, but keep re-pressurising the system as you do them. Once all the rads are clear of air make sure your boiler is once again at one and a half bars. That`s it.
hi.al great vid and a great idea.just fitted one to my radiator on a combi boiler system, my question is how do you use this drain off to drain just the one radiator and how do you use it to drain the entire central heating system? many thanks.
+arfan jhangir Hi arfan, it will only drain the complete system or a droped piped radiator.
+dereton33 you can just drain that rad if you shut both valves off and open the drain off, it will drain the rad and not the pipework. this is if the valves are in working order!!
The radiator in my hall has no valves just blanking caps, can I use this method to install a valve?
Yes you can!
Hi mate, further more, I moved in to a new build house for two years.
What do you think if I need to replace 5 TRV for radiators up to this moment for my house and I am going to replace the sixth. In your opinion, is there anything wrong with the system. You know my mum moved into her house for at least 14 years from new and never replace any of those TRV for her house.
Thanks for helping
The builders probably used real cheap valves.
Would it not be better to bug f&e tank release pressure then change valve less messy
Only if you have an F and E system.
Hi, where is the link to the larger valves that you mentioned? The standard size available is 15mm X 1/2 inch but my radiator appears to be 1inch, is this typical for an old radiator?
It will be 22 mm I never put the link for 22 mm but they are on Amazon.
Legend. I'm going to have nightmares later about fountains of dirty water spewing out the valve over the wall, but I like it.
No pain no gain. Ha ha.
Seriously though, this was a really useful video. Saved me a lot of grief. I thought I was going to have to drain the whole thing down by letting it dribble out of the valve nut into a tray and keep emptying that.
The real tip was rotating the valve head so as to fit a hose and let it drain outside. It was a drop pipe system as well so had to tackle two radiators. Have now fitted drain off valves. Thanks once again for your great video.
No problem Dominic.
Nice video. I have two questions. 1. Is it worth having the drain valve on all radiators on groundfloor? 2. Is there any problems in having them on all radiatorson ground floor? Thanks a bunch.
Yes it does help with the draining of the whole system, especially on dropped pipe systems. It is a good idea to have them.
Hi there mate, I've watched many of your videos thanks! A quick question if you don't mind, one of the valves for my upstairs radiator is leaking, I can't stop a little drip. The wife doesnt want me to drain the system, doesn't trust me or something haha 🙂 tell me, if I disconnect the radiator as in this video can I replace the valve olive without draining the system? Hope this makes sense !
Unfortunately not, if it is the pipe connecting olive, but you can if it is the rad union side.
Excellent video mate, thanks for your help!
No problem.
Hi its Paul McKay (see below) and I have just completed this job but without the thumb stopper trick. It was so easy I should have thought of it myself, but that is where your experience comes in. angle valve and drain and PTFE tape from Tool Station for less than £5! No leaks but still need to try it hot...
No problem
I need to fit this exact valve (the one with the larger nut) in a house with 13 rads and no drain off fitted. The rad closet to the back door has a leak from the nut connecting the copper pipe coming up from the floor.
I presume I shouldn't I chance the quick change over method as the olive on that nut has obviously failed?
No I would play safe and drain down there would be too much pressure on that rad valve.
can you put a TRV on the drain valve elbow? I need to replace the elbow my TRV is on (the pin in the elbow has had it, it keeps getting stuck) so thought I could replace with an elbow / drain cock.
yes.
thanks, although I ended up getting a standard valve / trv. Shop only had one type of drain cock for sale which wasn't compatible with a trv. Draining a big radiator took longer than expected, going to look at getting rad clamps so I don't have to do this again.
I did everything he said to not to do before watching this video. I also tried the wrong side of the radiator with the thermostat. Watch this first before attempting the change
Knowledge is all.
Thank you so much your always so helpful
No problem.
Excellent Sir you are very good thanks
Most welcome
do I need to open bleed valves on all radiators when emptying whole system?
Yes.
Where's the link for the larger nut version? Can't see it
Will check it out .
you can cover the walls too
Yes .
Thank you so much for this video
No problem.
Great trick mate
Thanks.
balls of steel 😊
No PTFE tape
Not on compression fittings
Where do you think that is needed? The only place for PTFE is on the radiator tail threads.
Very good but I would have frozen the pipe bit less mess
+Ian Mowbray thats the easy way oit
Good one
brilliant thanks i would just get an old shower curtain cover the wall
Perfect!
Yes, well thanks for that but now you better get yourself down to the hardware store to buy some paint lol.
Great point!
Dirty Boy! Next time put some plastic up the wall, Ha, Ha! Good job you have an understanding wife.
+Marilyn Perks I know lucky me.
What on earth is Plumb Dan talking about!!
I'm sorry but some customer won't be happy with that mess on the clean new decorated wall. I'd drain the whole system.
Good luck with the airlocks and the extra 3 hours work. Still I guess you can charge more that way,
@@dereton33
I know what you mean Mr, I'd do what you did in some cases, but some new walls better will be ruined.
Charging wise you charge for the work you do for them not matter what Mr.
But after all Ive learnt alot from you and plus this tutorial taught me some. Thanks
Why not just drain the system, this is totally wrong. Look what damage you have done to the wall, customers wont be happy.
I was just trying to show what can happen if you do not drain the system, but do a live change over. Getting an airlock after the long process of draining the system and refilling can take a very long time to sort out. So 5 mins to to change it this way or 3 to 6 hours the drain it out way.. Still I guess you get the chance to charge your customers more money that way. By the way no damage was done to the wall it all just cleaned off with detergent.
@@dereton33 you have a fair point my friend.
The radiator valves with drain offs are really good additions.
Fake
I just replaced 3 radiators i have single pipe system after that all my radiators not working all mean all 10 radiator take off air from all radiators still not working
Please help me how to fix back to normal
Thanks
You have air in the system. Bleed all the radiators check for air stuck around the 3 way valve,, also make sure to beed air from the pump. .
@dereton33 bleed radiator take off air still not working
Can you please explain the 3-way valve ? Thanks
Thank you 👍
You are welcome