Filling loop.....my first time...

[Mick Atkinson]

Hi guys,

just noticed that my boiler had gone off due to a lack of pressure, I've been wondering for a while why this keeps happening and when I came to fill the system back up the plastic lever on the union snapped off. Then I noticed it was slightly wet. This is where I'm losing pressure from I think. Anyway I've attached a picture to show the problem. Can I just purchase a new filling loop and replace it?

next question.. Is this a difficult job and will the whole of the system need draining so that I can replace the loop?

is there just one size for these things or a multitude of sizes.

help would greatly be appreciated..

mick

 

[Rickster123]

Hi mick welcome to the forum. A 15mm filling loop is fairly standard mate to be honest. If your boiler is downstairs you may need to drain the top half of the system. Although you could just release the initial pressure and jump it on quickly. Depends how confident you are.

 

[diamondgas]

Don't forget to turn the main stopcock off also mind 🙂 and make sure that there's no auto air vents anywhere.... and that you get the valves on the new loop the right way around ... etc...etc... 🙂 Yep it's pretty straight forward if you're lucky 🙂

 

[Mick Atkinson]

Hey,

thanks for the reply. I'm a confident DIY man and a qualified spark, if I'm honest I hate water.. (I'd rather get a shock)... Boiler is downstairs in garage..

Surely water will be everywhere once I remove the existing filling loop..

 

[Rickster123]

Don't forget to turn the main stopcock off also mind 🙂 and make sure that there's no auto air vents anywhere.... and that you get the valves on the new loop the right way around ... etc...etc... 🙂 Yep it's pretty straight forward if you're lucky 🙂

turn off the stopcock? I thought you lived life on the edge Steve?! :boat:

 

[Rickster123]

Hey,

thanks for the reply. I'm a confident DIY man and a qualified spark, if I'm honest I hate water.. (I'd rather get a shock)... Boiler is downstairs in garage..

Surely water will be everywhere once I remove the existing filling loop..

it will be if you faff about. Be prepared with the new valve in hand. It gets the heart pumping!

 

[Mick Atkinson]

Then once it's on it's just a case of re filling the system and bleeding all rads?

 

[diamondgas]

turn off the stopcock? I thought you lived life on the edge Steve?! :boat:

I do but don't like getting wet unless it's spillage through over indulgence in the falling down water 🙂

 

[Killy Bing]

A little water on the garage floor wont hurt ehh 🙂 and if you get wet you're at home!

 

[Rickster123]

Then once it's on it's just a case of re filling the system and bleeding all rads?

Thats it. Don't forget to add new inhibitor to your system tho.

 

[downthesouth]

One valve should be a non return type with a direction of flow towards the pipe and away from filling loop usually brass about 2 inch long or so. This should prevent flow back from ch circuit. Go steady thou. Mops ,dust sheets st the ready!!

 

[Mick Atkinson]

I've seen the new filling loop and it had the longer fitting which looked like the non return type..

 

[Mick Atkinson]

151029469887. One of them, search on eBay...

 

[Mick Atkinson]

What inhibitor do you recommend

 

[downthesouth]

Sentinel. But tbh they are all pretty similar i think

 

[Mick Atkinson]

Sentinel. But tbh they are all pretty similar i think

Am I better turning all trv off as well? Will that keep some water in the system?

mick