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The RIDGID RDDHCOOR1 is a complete OO-R die head assembly sized for cutting 1-inch pipe threads. Die heads of this type hold the threading dies in a fixed carrier and are used with compatible RIDGID threading machines to cut NPT threads in a single pass. The OO-R designation identifies the die head series, which determines die set compatibility and machine fitment. Licensed pipefitters, plumbers, and mechanical contractors use this assembly as a direct replacement or primary tooling component when threading pipe on the job or in a shop environment.
This die head is suited for use in commercial and residential plumbing, fire suppression, and mechanical piping applications where 1-inch threaded pipe connections are required. It mounts to compatible RIDGID OO-R series threading machines and accepts OO-R series replacement dies. It is appropriate for high-volume threading operations where a complete, ready-to-run die head is preferred over individual die replacement.
Designed as an OEM-style replacement die head for RIDGID OO-R series pipe threading machines configured for 1-inch pipe.
Die head installation and replacement should be performed by a licensed plumber or qualified pipefitter familiar with pipe threading equipment. Disengage and lock out the threading machine before removing or installing any die head assembly. Ensure the die head is fully seated and secured in the machine carriage before resuming operation. Follow the threading machine manufacturer's operating manual for proper die head mounting procedures and lubrication requirements.
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