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The ASC Engineered Solutions 500421045 is a copper plated riser clamp designed to support vertical copper tube size (CTS) piping runs in plumbing and mechanical systems. Sized for 1-1/4 inch CTS pipe, this clamp provides secure anchoring of vertical pipe at floor penetrations and structural supports. The copper plating ensures material compatibility with copper piping systems, reducing the risk of galvanic corrosion at the contact point. Plumbers and pipefitters install this clamp where code requires periodic support of vertical runs. It weighs 0.90 pounds and is built to the standard riser clamp form factor recognized across residential and commercial piping applications.
This riser clamp is used in residential and light commercial plumbing installations where vertical copper pipe requires support through floor assemblies or at structural members. The CT121 designation corresponds to the clamp body style suited for CTS pipe in riser applications. It is appropriate for installations governed by IPC and IFGC provisions requiring vertical pipe support at specified intervals, particularly on copper domestic water supply and hydronic piping risers.
Designed as an OEM-style replacement and standard-stock riser clamp for 1-1/4 inch copper tube size pipe in residential and commercial plumbing riser assemblies.
Installation is performed by licensed plumbers or pipefitters in accordance with applicable IPC provisions for vertical pipe support spacing. Shut off the water supply and depressurize the line before securing or repositioning any clamp on an active system. The clamp should be seated flush against the support structure with appropriate fasteners to prevent pipe movement under thermal expansion. Do not use this clamp as a substitute for pipe hangers on horizontal runs.
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