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Andrew Millar26/02/2014 20:41:25
11 forum posts

Hi all building a Lynx A3 engine the drawing is asking for a M5 compression union can any one tell me were to get them had a look on net with no luck would be very grateful for any help

jonathan heppel27/02/2014 00:09:18
99 forum posts

Try pneumatic suppliers, or perhaps Lubetec (may be Lubetech)- not to be confused with a spillage control company with a similar name. Air stuff is generally push fit these days, but compression fittings are still available. Also SMC make cute M5 secure barbed fittings for nylon or urethane if plastic line is ok. RS do them or used to.

JasonB27/02/2014 07:27:25
17862 forum posts
1954 photos
1 articles

What size pipe are you joining as some of the German ME suppliers do their steam fittings with M5x 0.5 threads though most are nut & nipple rather than compression.


JasonB27/02/2014 07:57:25
17862 forum posts
1954 photos
1 articles

Do you actuially mean M5 as in thread size or do you mean a compression fitting for 5mm OD copper tube? the later are easy enough to come by such as here used for fridge and aircon coiled copper tube.

Edited By JasonB on 27/02/2014 07:59:02

Andrew Millar27/02/2014 18:49:57
11 forum posts

thanks for your help it was a 5mm thread and 4 or 5 mm pipe my local baring supplier may be addle to get them thanks again for the help

JasonB27/02/2014 18:58:08
17862 forum posts
1954 photos
1 articles

Can't see how that will work. You can't put a 5mm OD pipe into an M5 thread and doing it with a 4mm pipe would only leave 0.1mm wall thickness to the fitting. crook


Or is it 4or5mm pipe compression on one side and M5 threaded spigot on the other?

Edited By JasonB on 27/02/2014 19:00:27

Andrew Millar27/02/2014 20:48:36
11 forum posts

HI Jason the head is tappet for a 5mm thread the union end is bigger when I look at the final assembly pitcher

jonathan heppel28/02/2014 02:11:30
99 forum posts

Check out RS components stock numbers 222-3823 and 222-3801. and others in the family. If appearance is important, they're really tidy.

Andrew Millar01/03/2014 17:48:18
11 forum posts

Hi Jonathan thanks for the help they look good will give them a go

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