since from 2000 
Description
Types Available
•2-Lug Type:
For hoses up to 1” size — ideal for standard compressed air and water line connections.
Comparable to Dixon AM2 Type
•4-Lug Type:
Designed for larger hose assemblies or high-vibration, heavy-duty applications for added security.
Comparable to Dixon AM4 Type
Specifications
•Material: Carbon Steel (Plated Finish)
•Gasket: NBR (Nitrile Rubber) – Oil, air, and water resistant
•Thread Type: NPT Male / Female Threads
•Temperature Range: -20°C to +100°C (intermittent up to +120°C)
•Working Pressure: Up to 150 PSI (10 bar), depending on hose and clamp quality
IMPA Code References:
•350731 – Chicago coupling, hose end 3/8”
•350732 – Chicago coupling, hose end 1/2”
•350733 – Chicago coupling, hose end 3/4”
•350734 – Chicago coupling, hose end 1”
•350735 – Chicago coupling, 4-lug type 1-1/4” to 1-1/2”
Available Sizes
•Hose Tail Sizes: 1/4”, 3/8”, 1/2”, 3/4”, 1”, 1-1/4”, 1-1/2”
•Threaded Ends: NPT Male / Female
•Options: Hose end, Male thread, Female thread, Blank end, Safety clip type
Applications
•Compressed air distribution and supply lines
•Pneumatic tools and construction machinery
•Industrial and mining air systems
•General water and air transfer setups
Product Highlights
✅ Quick quarter-turn connection
✅ Compatible with major universal coupling standards
✅ Plated carbon steel for corrosion resistance
✅ Reliable NBR gasket for air and water sealing
✅ Available in both 2-lug and 4-lug configurations
✅ IMPA Codes 350731–350735 for easy product reference
