There are three groups of coupling products used in the pneumatic conveying and powder handling industry.

Compression couplings
Morris compression couplings are used to join pipe and tubing in pneumatic conveying systems, and are easy to install. They are made of stainless steel, galvanized steel or aluminum and can be made to suit pipe and tube sizes from 12 to 1,200 mm (½ to 48 inches). Compression couplings come with static conductive grounding strips and have black and white neoprene or silicone gaskets.

Flexible hoses
PVC and polyurethane hoses of 25 to 400 mm (1 to 8 inches) in diameter are used in vacuum and pneumatic conveying systems. Clamps for hose installation can be included. The flexible hose types include:

• MORR-CLEAR™ for economical food-grade
• MORR-CLEAR STATIC™ that has a static-dissipating ground wire
• MORR-THANE™ that has extended performance urethane
• MORR-TUFF™ with a blend of PVC, urethane and rubber for severe situations’
• MORR-LITE™ with flexibility polyurethane for long life and wear resistance

Vacuum bends and accessories
There is a wide range of couplings, tubing, fittings, bends, shrink sleeves and accessories for industrial and commercial vacuum systems. Typical applications include wet or dry material clean-up, high-velocity dust collection and special situations. Vacuum bends have outer diameters that vary in size from 50 to 300mm (2-1/8 to 12 inches) and made from 11 to 16 gauge aluminium, stainless steel, carbon and galvanized steel.