Air compressor leaky fittings

[Jakg]

I need to use a pneumatic tool for a car repair, which meant picking up a second hand compressor.



Enter a Wolf Air Sioux 50.

Went to plug in my new hose and tool to find it doesn't fit, because the tool etc is a 1/4" euro fitting, but the compressor has 1/4" PCL couplers.

Did some research, went to Screwfix and bought a PCL AC71CM XF coupler but closer inspection shows the original PCL couplers have a parallel thread and the new ones are a taper thread. Put together with some PTFE, but leaked when any pressure in there.

Found some unbranded parallel thread couplers on Amazon and fitted those instead, better but still leak a bit - enough you can hear the air escaping and tool function is affected.



It doesn't look like PCL do a male-threaded parallel euro coupler, but I could try and buy a different branded one (e.g. seen a Rectus one)?

Alternatively I could try again with some liquid PTFE.

Never had an air compressor before or have any knowledge on fittings so was hoping it would all just work but here we are.

Any thoughts?

[Belle427]

I cant help much with the fitting type but dont be afraid to wind lots of ptfe around the thread, some people only do a couple of turns which isnt enough.

[gotoPzero]

I would take the valve off and go to your local hydraulic shop with the valve who will have a huge range and be able to tell you exactly what you have and what you need.

[DKL]

That looks the same as mine so are any of these any use?
https://www.toolstogo.co.uk/collections/couplers-c...

[Jakg]

DKL said:

That looks the same as mine so are any of these any use?
https://www.toolstogo.co.uk/collections/couplers-c...

The coupler has a female screw fitting. I need a male one.

[Jakg]

Identified the leak. Don't think PTFE is going to fix it...

[journeymanpro]

That's an overtightened taper

[s p a c e m a n]

That's what chemical metal is made for

[S6PNJ]

Nah, stick a tyrap around it!
That is said in jest!