Napa brand, Douglas Air?

by Bilal
(Toledo, Ohio)

Napa brand compressor?

Napa brand compressor?

Napa brand compressor?
Douglas Air compressor?
Napa brand, Douglas Air?
Napa brand, Douglas Air Compressor?

Hello All,

You guys have helped me out once before.

Ive done a bit of research and haven't found much other then a brand name "Douglas Air". which I'm fairly sure that's what it is, not 100%.

I am hoping someone can identify what model it is as well and if there is any specifications, manual/parts list or parts available for it.

it was sold under the Napa brand name on a 120 gallon tank & 7.5hp motor.

Your help is much appreciated!

Thank you,


Comments for Napa brand, Douglas Air?

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Feb 01, 2018
Douglas 2057
by: Bilal

Yes, its a Douglas 2057. I rebuilt it, needed high pressure piston and pin and new valves with plates.
Assured Air compressors out of Georgia helped me with parts.

Feb 01, 2018
It's originally a Douat compressor in brazil
by: Andrew

These pumps were imported by Douglas Air for the Knapp air system.

We can still get some parts for them, you cannot kill the bottom and (Contact information has been removed, to ensure that all responses will be available to all visitors to this site. Please post the parts source here. Thanks - Moderator)

Jan 22, 2017
by: Roger

This looks like a Schulz pump.

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