Is anyone familiar with these pipe fittings please?

[Vintage_Potter]

Good afternoon (evening) funsters. First time away in our motorhome (2019 Adria Matrix) today since November. Arrived on site, blue sky, bright sun, full of the joys of something like Spring. Electric hooked up, fresh water filled to 25%, Truma 4e heating switched on and working, hot water taps opened to fill boiler, mug of tea brewed. I then notice water slowly spreading across the floor from the underneath cupboard where the boiler lives. On investigation I eventually find that the water is escaping from a joint the like of which I'm unfamiliar with. There are several in the attached picture, some marked with a type of loose red washer, some with a grey washer, I'm guessing red for hot and grey for cold? The one that leaked is the one at the top of the picture. I've pushed the blue collar tightly back towards the body of the blue fitting (required pliers, I couldn't get it to go back by hand) and refilled and tested the system and I appear to have fixed the problem.

Sorry for the extremely wordy preamble but the reason for boring you all with this tale is that as these types of fittings are new to me (Google suggests they are pneumatic fittings) and I don't know how they actually work I have no confidence that my "fix" will hold. Can anyone enlighten me and give me some idea of how they work please?

 

[Vintage_Potter]

Now you tell me....

I couldn't find said threads by the way, I must brush up on my searching technique.

 

[IRHP]

The black one is a John Guest push fitting and the blue look like the Whale variety.

This appears to be a common fault with Adria's

The blue are made by Reich

 

[IRHP]

It's a common problem on Adria's, they are a standard push fit pipe connectors of dubious quality it is best to replace them with JG (John Guest) fittings they are available from all plumbers merchants, Screwfx, B&Q etc.
Leaks are often caused by the pipe being under tension, check there is a bit of slack in the pipework.
If you pull the grey collar out you can release the joint pushing in the white ring, check the pipe isn't scored then push back in firmly it may cure it until you can get some new fittings.

Never found JG 12mm at any of the big sheds

 

[IRHP]

A wee demo in case anyone is searching Adria leaks.

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[Two on Tour]

The blue are made by Reich

As was pointed out earlier in the thread.

 

[Vintage_Potter]

A wee demo in case anyone is searching Adria leaks.

That's brilliant thank you. I think I'm going to be rather short of pipe to make clean ends though. I might have to buy some John Gest joint pieces too, introducing more potential points of failure. Unless I can get to both ends and replace the whole pipe but some of them, especially at the shower and the kitchen sink appear rather difficult to access.

 

[Lenny HB]

That's brilliant thank you. I think I'm going to be rather short of pipe to make clean ends though. I might have to buy some John Gest joint pieces too, introducing more potential points of failure. Unless I can get to both ends and replace the whole pipe but some of them, especially at the shower and the kitchen sink appear rather difficult to access.

If you replace bits of pipe using JG fittings you won't have any problems. Plenty of houses plumbed with JG.

 

[Howard B]

Is 12mm a standard size for motorhomes?

 

[donkey]

Is 12mm a standard size for motorhomes?

Yes, most use that size.

Geoff

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[Terry]

Lenny most household pipes are 15 mm whilst MHs are mainly 12mm so are mainly sold only in caravan/ camper/eBay shops

 

[Vintage_Potter]

If you replace bits of pipe using JG fittings you won't have any problems. Plenty of houses plumbed with JG.

I think I have some in my 2003 built house Lenny but larger bore. One particular joint is in a plastic central heating pipe behind a studded wall which I managed to drill through not long after I moved in 4 years ago. I still haven't got round to filling the hole in the plasterboard but there's a very nice picture hiding it, which allows me to check that it's still watertight. We'll that's what I tell Mrs VP.

 

[DerryW]

Looking at the short video by IRHP, for good reason I'm sure, he did not use the small insert. I found on the 2 leaks which I repaired using the insert ensures a perfect square end when fitting the pipe into the fitting.

What I would add is, when you think you've pushed the pipe all the way in, give it another go to make sure its fully home.

 

[Puddleduck]

If you replace bits of pipe using JG fittings you won't have any problems. Plenty of houses plumbed with JG.

Including ours

As said [previously 15 / 22 mm in houses and 12 mm in motorhomes and caravans. Some places will order the 12 mm as a special order, not the big DIY places but you could try City Plumbing or the like.

 

[Lenny HB]

Including ours

As said [previously 15 / 22 mm in houses and 12 mm in motorhomes and caravans. Some places will order the 12 mm as a special order, not the big DIY places but you could try City Plumbing or the like.

Our van is much more sensible, plumbed in 10mm hose no stupid connectors to leak.

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[HugoBNB]

It's a common problem on Adria's, they are a standard push fit pipe connectors of dubious quality it is best to replace them with JG (John Guest) fittings they are available from all plumbers merchants, Screwfx, B&Q etc.
Leaks are often caused by the pipe being under tension, check there is a bit of slack in the pipework.
If you pull the grey collar out you can release the joint pushing in the white ring, check the pipe isn't scored then push back in firmly it may cure it until you can get some new fittings.

Exactly as above. I am going to change this manifold of joints in ours with John Guest fittings (including pipe inserts as shown on a other thread) plus, I am going to secure the pipes and joints to prevent stress from movement when driving.
Good luck.

 

[ontheroadagain]

I have just bought a selection of 12mm John Guest fittings to keep as spares. They are not cheap!

 

[IRHP]

Looking at the short video by IRHP, for good reason I'm sure, he did not use the small insert. I found on the 2 leaks which I repaired using the insert ensures a perfect square end when fitting the pipe into the fitting.

What I would add is, when you think you've pushed the pipe all the way in, give it another go to make sure its fully home.

I've used the inserts on the pipes where I've replaced the fittings, the one in the video was just a demo.

 

[IRHP]

I have just bought a selection of 12mm John Guest fittings to keep as spares. They are not cheap!

£3-£4 each??

 

[ontheroadagain]

£3-£4 each??

Yes. Not much if you are only buying a few spares but would cost quite a lot if you wanted to replace all of the original fittings.

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[ontheroadagain]

We have some of these but there doesn’t appear to be a John Guest equivalent.

 

[L' Hobo]

If you replace bits of pipe using JG fittings you won't have any problems. Plenty of houses plumbed with JG.

Duplicate advice

 

[IRHP]

We have some of these but there doesn’t appear to be a John Guest equivalent.

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[Terry]

Our van is much more sensible, plumbed in 10mm hose no stupid connectors to leak.

Hi Lenny, What joins your 10 mm hose together please? I ask because I’ve got a load of 10 mm pipe and bags full of 10 mm push fit fittings. If I remember right they came from a pub bar fitting bloke. Via a mate

 

[Lenny HB]

Hi Lenny, What joins your 10 mm hose together please? I ask because I’ve got a load of 10 mm pipe and bags full of 10 mm push fit fittings. If I remember right they came from a pub bar fitting bloke. Via a mate

Standard barbed nylon pipe connectors with hose clips, nothing fancy on cheapo Hymers.