Romac 266-071007101231 Restraint Coupling 6 Inch

Product Description

The ROMAC 266-071007101231 is a 6-inch wide-range restraint coupling designed for joining and restraining pipe in water and sewer systems. Built from high-strength ductile iron with rubber seals and stainless steel hardware, it accommodates a pipe outside diameter range of 6.90 inches to 7.10 inches, making it suitable for ductile iron, cast iron, PVC IPS, PVC C900, and HDPE pipe. A fusion-bonded epoxy interior coating protects against corrosion in both potable water and sewer applications. The one-piece, stab-fit design simplifies field installation. Licensed plumbers, water works contractors, and utility crews are the primary installers of this type of fitting.

This coupling is used in underground water distribution and sewer collection systems where pipe restraint is required at connections, transitions, or repair points. Its wide OD range allows it to span ductile iron through oversize cast iron pipe sizes within the 6-inch nominal class. The Alpha XL series is engineered for municipal and commercial pipeline applications where rated working pressure and certified materials are required. At a working pressure rating of 350 psi, it handles demanding distribution system conditions. NSF 61 and NSF 372 certification confirms suitability for potable water contact.

Key Features

• Wide OD range: 6.90 inches to 7.10 inches accommodates ductile iron, cast iron, PVC IPS, PVC C900, and HDPE pipe
• 350 psi rated working pressure for high-demand water and sewer service
• Fusion-bonded epoxy coating for internal corrosion resistance
• One-piece stab-fit design for simplified field installation
• High-strength ductile iron body cast to ASTM A-536 Grade 65-45-12
• NSF 61 and NSF 372 certified for potable water applications
• Made in USA

Compatibility

Compatible with ductile iron, cast iron, PVC IPS, PVC C900, and HDPE pipe in the 6-inch nominal size with outside diameters ranging from 6.90 inches to 7.10 inches, including ductile iron through oversize cast iron pipe sizes in the 6-inch class.

Installation Notes

Installation is performed by licensed plumbers or water works contractors following applicable local codes and AWWA guidelines. Depressurize and isolate the pipeline before beginning work. Clean pipe ends of debris, scale, and coating irregularities within the coupling engagement zone to ensure proper seal seating. Follow the manufacturer torque sequence for the restraint hardware to achieve uniform gasket compression without over-tightening fasteners.