8" Grooved Rigid Coupling – Ductile Iron, UL/FM Approved Grooved Fittings 1) What pipe size does

1) What pipe size does this coupling fit

Fire suppression mains in commercial buildings

Ductile iron is the preferred material for grooved fittings because of its superior strength and long-lasting durability:

Material: Lead-Free Wrought Copper

and mechanical piping systems

8" Grooved Rigid Coupling – Ductile Iron, UL/FM Approved Grooved Fittings 1) What pipe size does8" Grooved Rigid Coupling UL FM Approved for Large Scale Fire & Mechanical Piping The 8 inch Grooved Rigid Coupling is engineered for heavy duty applications where a fixed, no deflection connection is essential. Its designed for large fire suppression mains, mechanical risers, industrial water systems, and chilled water loops where alignment must remain locked under high pressure and load. This coupling is made from high strength ASTM A536 ductile