Description

These 4-Bolt Air System Compresion Couplers also call air couplers or air pipe clamps are used on everybrand of air system for grain. These couplers connect air pipe to air pipe, or accessories like elbows, sight glasses and deadheads to air tubing.  4-Bolt Couplers are used for 4″ or 5″ Systems.  If you have a 6″ system, see our 5-Bolt Compression Couplers.