




🔧 Upgrade your airflow game with precision and durability!
The Viair 90001 adapter converts 1/8" Female BSP threads to 1/4" Male NPT, crafted from robust stainless steel for reliable pneumatic system connections. Sold in a convenient two-piece pack, it’s perfect for air locking differential plumbing and other air system applications, backed by a one-year manufacturer warranty.
















| ASIN | B004RCOY5O |
| Best Sellers Rank | #64,528 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1,853 in Pipe Fittings |
| Brand | VIAIR |
| Brand Name | VIAIR |
| Color | Silver |
| Connector Type | Adapter |
| Customer Reviews | 4.4 out of 5 stars 183 Reviews |
| Exterior Finish | Per Item Description |
| Global Trade Identification Number | 00818114009013 |
| Included Components | Fitting |
| Item Dimensions | 3.1 x 2.1 x 1 inches |
| Item Type Name | Air Line Fitting |
| Item Weight | 0.02 Pounds |
| Item dimensions L x W x H | 3.1 x 2.1 x 1 inches |
| Manufacturer | Viair |
| Manufacturer Warranty Description | All VIAIR products come with a One Year Manufacturer Defect Warranty |
| Material | Stainless Steel |
| Material Type | Stainless Steel |
| Model Number | 90001 |
| Number of Pieces | 2 |
| Size | 1/8" x 1/4" |
| Thread Size | 0.25 inch |
| Thread Type | BSP |
| UPC | 818114009013 |
| Unit Count | 1.0 Count |
F**D
Nice adapter for Master airbrush compressor
Didn't necessarily want to buy this product but when I switched from my cheap Master airbrush setup to my Iwata Revolution, the Iwata air hose didn't fit. I was, to say the least, very disappointed. This product served to act as an adapter from my old setup to my new Iwata airbrush. The only problem is that it doesn't fit exactly and you will probably need to use thread seal tape. Overall a good and necessary purchase. Also it is neat that it comes with two of them just in case a problem arises and you need a replacement.
M**J
Good but no thread seal as pictured.
Part arrived in good shape, but not as pictured. There is no red thread seal on the product received.
M**.
Great for adapting airbrush compressors to 1/4 NPT
Worked great adapting my airbrush compressor to my Paasche airbrush hose.
M**.
Airbrush brass fitting
Exactly as advertised, allowed direct connection to 1/4 fitting. Solid brass quality finish.
N**H
Perfect fit
Needed one of these to mate the Toyota vacuum sensor switch to a custom brake boost system on my 1981 Land Cruiser resto-mod. Works perfectly and you get two for a reasonable cost! What's not to like?
M**O
They work
They are brass fittings. What else do you need to know?
A**R
Good value
Fit well for intended use
R**R
Sorry but they did not work as the size was wrong
I was looking for the size of the female that was valve stem size, it was close but did not thread in.
Trustpilot
4 days ago
1 week ago