Air Compressor Cyl Head Fitting

[Markfothebeast]

What type of thread does an air compressor typically use for the cylinder head fitting? It goes to the compression fitting on the line on the other end. Bostitch 6 gal 135 psi horizontal. The original elbow fitting is missing so I never got a look at it.

My 60 gal compressor has a typical male 1/4" MPT fitting into the cyl head and a compression fitting with a finer thread pitch on the other end. Is this the same compression fitting as a gas line or are there different thread pitches? I'm hoping I can nail this down and find something at the local hardware store. Maybe in the gas line fitting section?

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[The Cobbler]

it's probably pipe thread .

 

[Markfothebeast]

Is there a compression fitting with the same thread pitch as a pipe thread?

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[The Cobbler]

no, compression fittings have a different thread

 

[Markfothebeast]

So there is only one thread pitch on the compression fitting end? So I can use a gas line compression fitting x MPT?

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[bigredmf]

Quite often they use a Parker compress align fitting

Very similar to a standard brass compression but the ferrule is staked into the nut.

There are a couple other manufactures of this style and they are typically rated at a higher pressure than a standard plumbing compression fitting.

Keep in mind the compression fittings a the home center ****.

My 2 cents

Red


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[Markfothebeast]

I have a boat load of compression fittings i removed from the old 1960s copper LPG lines in the house. That's low pressure but they are definitely much thicker than any newer fittings I've seen around. The elbows/adapters in general.

I adapted the old LPG as cooling lines on my 60 gal.

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