Outgassing at outlet elbow joint on new Bambi BB15

by Ben
(London, UK)

Elbow joint on new Bambi BB15

Elbow joint on new Bambi BB15

This is a brand new Bambi BB15 Compressor.
At around 6bar (The working pressure of BB15 is 6-8bar) the outlet elbow joint starts outgassing between the green pipe and the zinc nut (see photo).

This is accompanied by a small amount of water discharge. I have circled a picture of the water drop that marks where the bubbling / outgassing occurs.

Is there anything that can be done or is it a 'replace brand new' jobby?

Comments for Outgassing at outlet elbow joint on new Bambi BB15

Click here to add your own comments

Feb 06, 2017
Brass fitting olive
by: Bill

Brass fitting olive on a hard pipe, particularly one that's malformed... pretty tough to seal.

Glad Bambi has stood behind their product for you.

Thank you for taking the time to update all of us.

Feb 06, 2017
update
by: Ben

So the manufacturer (Bambi) has been very swift to respond and made some very useful suggestions - including disconnected the compression fitting and reconnecting it, which was an interesting experience - but in the end fruitless.

It looks to me that the outlet pipe has scoring / deformation which means that the (brass) olive isn't effecting the seal necessary for a good compression joint.

It's going to be sent back. If this problem had arisen outside of warranty then I would have sourced a new olive, smoothed down the outlet pipe and attempted a fresh fit.

Feb 05, 2017
Thanks
by: Ben

Thanks a lot for the advice!!

I thought to run the compressor once more this morning just to see that the problem was there, and it's actually much worse than I thought.

I followed your advice, depressurised and disconnected the machine, and put some pressure onto the fitting with a spanner; it was very tight, and I don't want to force anything so I put just enough force to turn the fitting a millimetre or two. It's made no difference at all, so I will wait until the shop/manufacturer opens on Monday before doing anything else.

I will update the thread when there's any progress.

Feb 05, 2017
Ben's BB15
by: Bill

Good point.

That means unplug the compressor and either open the tank drain or crack the PRV open until all pressure in the compressor has bled to atmosphere.

Feb 05, 2017
Ben's BB15
by: Anonymous

Ben, you said:
However, I'm not used to working with gas under pressure (and have limited experience working with plumbing), and I don't want to damage or tear anything!

!*! Please release all pressure before you work with those fittings.

Feb 04, 2017
Bambi BB15
by: Bill

Thanks. I wasn't sure if I was looking at an instant fitting or what you have identified as a compression fitting.

I don't think it would invalidate the warranty if you took a wrench (a spanner?) and tried to tighten the nut on the leaking side of the fitting. If it's not compressed sufficiently, it could leak.

Since it appears to be a metal pipe inserted into the fitting, you may be able to tighten the nut without too much concern about damaging the pipe.

Feb 04, 2017
Re: Bill
by: Ben

Hi Bill,
Thanks for your instant comment and thoughts.

I am no expert on any of this, but looking at the exploded "Pump Diagram" of the Operators Handbook I think that it's the feed tube and connector that joins to the 'Outlet Elbow' (item 16 / BPB 0065). On the diagram I can see what looks like an olive and the screw fitting that meets the feed tube; in the UK plumbing that's called a compression fitting (the tube is compressed against the olive when the nut is tightened which makes a seal). It may NOT be that, but that's what it looks like to me. Quick connects (as I understand it) look a bit different but are still some sort of joint between two pipes (in this case, the pump housing pipe and the outlet elbow)

I had a quick go at pushing (literally pushing) the nut onto the metal air line and there's zero movement. I don't want to start working on it too much until I've had word from the manufacturer / retailer, but your advice is very welcome and helpful.

I've heard that QC. isn't ideal with these - but finding a good budget compressor at 40dba isn't easy either!

Anyhow, if you have any ideas about how best to remedy this (without me losing my warranty!) then I am listening. I will post an update if/when I get word from the manufacturer.

My guess is that, if they don't want to replace the compressor, having a go at rotating the nut a few millimeters may do the trick. However, I'm not used to working with gas under pressure (and have limited experience working with plumbing), and I don't want to damage or tear anything!

Thanks again.
-Ben


Feb 04, 2017
Elbow on new Bambi BB15
by: Bill

Is that a metal air line inserted into a "quick connect" on the fitting?

The fitting should not leak, and most likely is caused by a crimp or damage to the seal inside the fitting, unless the air line is not seated deeply enough inside the fitting.

To my mind this may not bode well for the Q.C. on the rest of this compressor assembly, and if pushing the fitting down further onto the air line doesn't resolve it, yup, I'd be taking it back.

Click here to add your own comments

Add your own question or comment. It's easy to do. How? Simply click here to return to Bambi Air Compressor Issues.