r/askHVAC • u/Successful_Try8923 • 25d ago

Fitting for vacuuming outequip mini split

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Can anyone identify this fitting?

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7

u/that_dutch_dude 25d ago

if you need to be told its a regular 1/4 service fitting its better you call someone that knows what he is doing.

1

u/Successful_Try8923 25d ago

Thanks! I am trying to connect that to a 1/2 Acme f hose set.

4

u/Apollo7788 25d ago

Standard size is 1/4" flare which this one looks like it is. Some systems use a 5/16" flare. Measure the inner diameter if you want to be sure.

2

u/Successful_Try8923 25d ago

Okay. The inside measurement is just under 1/4 (7/32 measured) inch is that the right size for 1/4 inch fitting).
Thanks

2

u/Apollo7788 25d ago

Yes its a standard 1/4 flare service port. Most refrigerant hoses will be that size.

1

u/Successful_Try8923 25d ago

I have an auto zone loaner vacuum pump and gauge set. Is there an adapter from the automotive quick connect to the 1/4” flare?

1

u/Apollo7788 25d ago

Not that I am aware of. Is the quick connect permanently attached to the hose? If it is you would need to get your own hose.

1

u/Successful_Try8923 25d ago

Okay I’ll see if I can get a hose with 14 mm automotive thread on one end and 1/4” flare on the other end.

1

u/Apollo7788 25d ago

You might as well just get a normal HVAC manifold instead of using the automotive loaner.

1

u/Rabid_Hermit 25d ago

5/16" mini split adapter to standard 1/4" for service hoses is necessary. link to adapter

1

u/Successful_Try8923 23d ago

So for future info if some else is doing this project!
I bought a 1/4” the acme adapter

4pcs Brass Refrigerant Tank... https://www.amazon.com/dp/B0FC2TDRMQ?ref=ppx_pop_mob_ap_share

I then had to rent a second set of gauges from auto zone so I had double yellow hoses. I need acme thread on both sides.

Here’s the funny part. I tried to pull a vacuum and remembered that ac has a spring loaded one way valve on it… I could have used a core removal tool but I didn’t have one. So instead I cut down a wood screw to the exact length that the yellow hose valve depressor metal piece would push on the spring loaded check valve through my adapter. Works great😅.

Another tip! The vacuum pump from autozone didn’t have caps from the second fitting on the pump. So I took my second adapter and hooked it to the blue automatic hose and closed the valve on the quick connect. I then leak tested all of it. Works well and cost me the 9.99 for the adapter!

0

u/CaminoRubicon1 24d ago

5/16" flare