Sioux Chief 558-M4 1 Inch Cts Pipe Eye Insulator

Product Description

The SIOUX CHIEF 558-M4 is a pipe eye insulator designed to support and isolate 1-inch CTS (Copper Tube Size) pipe runs in residential and light commercial plumbing installations. Pipe eye insulators provide a secure mounting point while creating a barrier between the pipe and the structural surface, reducing vibration transmission and preventing galvanic contact between dissimilar materials. This fitting is installed by licensed plumbers and pipefitters during rough-in work where pipe support at regular intervals is required by code.

This insulator is suited for use with 1-inch CTS copper pipe in water supply systems, both hot and cold lines. It mounts to framing members, joists, or masonry surfaces to keep pipe runs anchored and properly spaced from structural elements. The insulating design helps minimize noise from thermal expansion and water hammer, making it a standard choice in residential construction and retrofit plumbing projects.

Key Features

• Sized for 1-inch CTS pipe for a secure, consistent fit
• Insulating construction reduces vibration and noise transfer to structure
• Prevents direct metal-to-surface contact, reducing risk of abrasion and galvanic corrosion
• Designed for straightforward fastening to wood framing, joists, or similar substrates

Compatibility

Designed as an OEM-style support fitting for 1-inch CTS copper pipe in residential and light commercial plumbing systems.

Installation Notes

Installation is performed by a licensed plumber. Shut off the water supply and depressurize the line before securing or repositioning pipe supports. Fasten the insulator to a structurally sound surface using appropriate fasteners for the substrate. Follow local plumbing codes and IPC spacing requirements for pipe support intervals.

Technical Specifications

• Pipe Size: 1 inch CTS
• UPC: 739236203441

Standard Information

• Brand: SIOUX CHIEF
• Manufacturer Part Number: 558-M4