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AuRavelling79

  • Posts: 25405
John guest fittings imperial and metric
« on: April 21, 2016, 07:05:47 am »
If I have 3/8" tubing and fittings and want to extend tubing, use elbows etc.,  can I use john guest 10mm - is it the same as john guest 3/8"?
It's a game of three halves!

Oliver @ GrippaTank

  • Posts: 356
Re: John guest fittings imperial and metric
« Reply #1 on: April 21, 2016, 07:25:42 am »
If I have 3/8" tubing and fittings and want to extend tubing, use elbows etc.,  can I use john guest 10mm - is it the same as john guest 3/8"?
Good morning,

Unfortunately this is not possible - whilst the tube may fit, under pressure they will weep.

We have 3/8" fittings in stock if you require any.
www.grippatank.co.uk - The home of the GrippaMAX crash tested cleaning system. Contact us on 0800 098 8407 or enquiries@grippatank.co.uk

AuRavelling79

  • Posts: 25405
Re: John guest fittings imperial and metric
« Reply #2 on: April 21, 2016, 07:27:35 am »
Thanks!
It's a game of three halves!

Perfect Windows

  • Posts: 4179
Re: John guest fittings imperial and metric
« Reply #3 on: April 21, 2016, 08:42:43 am »
If I have 3/8" tubing and fittings and want to extend tubing, use elbows etc.,  can I use john guest 10mm - is it the same as john guest 3/8"?

No, but you can find adapters to swap.  I've managed to get our setup tot he point where all fittings are metric.

Vin

AuRavelling79

  • Posts: 25405
Re: John guest fittings imperial and metric
« Reply #4 on: April 21, 2016, 09:38:08 am »
Hi vin - where can you get them, please?
It's a game of three halves!

Perfect Windows

  • Posts: 4179
Re: John guest fittings imperial and metric
« Reply #5 on: April 21, 2016, 10:18:04 am »
Hi vin - where can you get them, please?

I knew you were going to ask that.  Caller please hold...

AuRavelling79

  • Posts: 25405
Re: John guest fittings imperial and metric
« Reply #6 on: April 21, 2016, 10:27:57 am »
Hi vin - where can you get them, please?

I knew you were going to ask that.  Caller please hold...

You ought to change your "hold" music from Greensleeves ...  ;D
It's a game of three halves!

Perfect Windows

  • Posts: 4179
Re: John guest fittings imperial and metric
« Reply #7 on: April 21, 2016, 10:35:11 am »
Poor advice from me.  There is a 1/2" to 15mm adapter

http://www.abbeychart.co.uk/john-guest-15mm-pushfit-x-1-2-pushfit-straight-connector

But not 3/8" to 10mm

They do hundreds of fittings on there so you could doubtless bodge 3/8 to 15mm then buy 15mm to 10mm

http://www.screwfix.com/p/jg-speedfit-pem061510wp-straight-reducer-15-x-10mm/89950


My preferred solution is to fit every single pipe in 15mm JG.  It's readily available and cheap.  So, instead of 1/2" bsp to 1/2" JG pipe out of the RO, we use a 1/2" bsp to 15mm fitting (from Screwfix).   It means a bit of thought and a little more cost but it all becomes much more maintainable.  The final spot where we still have to go 1/2" is for the inline TDS meters (so two of the converters above and three inches of 1/2" pipe) but I think we have that fixed and every single item can be 15mm.   We also carry spares of every single connector - much easier if all 15mm.

Give me a shout if you want to talk it over.  Best to email and I'll call you or you'll get the answering service.

Vin


AuRavelling79

  • Posts: 25405
Re: John guest fittings imperial and metric
« Reply #8 on: April 21, 2016, 10:40:23 am »
That's great Vin ... thanks again.
It's a game of three halves!