NECO™ Female (NPT) Air Hose Coupling




Female Chicago Air hose coupling NPT  has female threading that screws onto your machine or devise.  The 2 lug end is a air hose connector to the 2 lug hose end that you would have on a 1 inch air supply hose.   In other words, the female end would go on the machine and the 2 lug end would receive your air line.

Female 2 Lug Air hose coupling comes in 5 sizes; 1/4 inch, 3/8 inch, 1/2 inch, 3/4 inch and 1 inch.  All of them are made out of plated ductile iron and all have the same size 2 lug end.  At this time, we are only stocking the 1 inch and 3/4″ coupling.  Please feel free to contact us to order a different size.

Stay Safe by using a safety pin in the pre-drilled hole on the 2 lug side.  Stay even safer by using a whip check cable around your air hose and equipment.

Part Reference guide for the 3/4″ 2 Lug FNPT Air Hose Coupling:

55-104 3/4 inch air supply hose

55-625 Two bold clamp

55-515  Two lug Male NPT

55-902 Two lug air coupling rubber gasket

60-111 3/4 inch closed galvanized steel nipple



OEM Equivalents:

IDS UF-075

U.S. Filter 4209-105

Axxiom 4209-105

Schmidt 4209-105

Blue Dog Blasting SKU:


Part Reference guide for the 1″ Female Chicago Air hose Coupling:

55-105 One inch air supply hose

55-626 Two bold clamp

55-516 Two lug Male NPT

55-902 Two lug air coupling rubber gasket

60-121 One inch closed galvanized steel nipple

55-509 Three way connector



OEM Equivalents:

Trinco 2-02052

Empire 505782

Marco 10FE2

Blue Dog Blasting SKU #:


Check out Rodeco for every type of abrasive media on the Market! Tell them that the Blue Dog sent you!

Additional information

Weight 2 lbs
Dimensions 2 × 2 × 2 in

55-505 3/4" ID, 55-506 1" ID