A.Y. McDonald 5130-012 CTS x MNPT Lead-Free Adapter Fitting

A.Y. McDonald 5130-012 CTS x MNPT Lead-Free Adapter Fitting

The A.Y. McDonald 5130-012 (manufacturer part 74753-22) is a 3/4" x 1/2" CTS x MNPT-NL adapter fitting designed to transition from copper tube size (CTS) connections to male national pipe thread (MNPT) connections in potable water and plumbing distribution systems. This adapter carries the "NL" designation, identifying it as a lead-free fitting suitable for potable water applications. Built by A.Y. McDonald, a trusted name in waterworks and plumbing fittings, the 5130-012 provides a reliable transition point between CTS tubing and threaded pipe or fixture connections, making it a practical choice for water service installations, meter setters, and fixture connections where a CTS-to-threaded-pipe interface is required. The reducing 3/4" x 1/2" configuration allows installers to step down from a larger CTS line to a smaller threaded connection point without introducing additional couplings, simplifying service line runs and reducing the number of joints that require sealing or inspection. Because the fitting is marked NL for compliance with lead-free plumbing standards, it is appropriate for use on drinking water supply lines, meter setter assemblies, and other potable water contexts where lead content restrictions apply.

Key Features

• Trade Size: 3/4" x 1/2" sizing for connecting between differently sized CTS and MNPT lines.
• Connection Type: CTS (Copper Tube Size) inlet paired with MNPT (Male National Pipe Thread) outlet for a secure threaded transition.
• Lead-Free Design: Marked "NL" (No Lead), making this adapter suitable for potable water distribution applications.
• Reducing Adapter Configuration: The 3/4" x 1/2" reducing profile allows integration between different pipe or tubing sizes in a single fitting.
• Manufacturer Part Cross-Reference: Identified under manufacturer part number 74753-22 for cross-reference and ordering accuracy.
• Waterworks-Grade Fitting: Manufactured by A.Y. McDonald, a recognized supplier of waterworks and plumbing components for municipal and residential water service.
• Simplified Installation: A single-piece CTS-to-threaded transition reduces the number of joints needed in a service line run.

Technical Specifications

• Manufacturer Part Number: 74753-22
• SKU: 5130-012
• Size: 3/4" x 1/2"
• Connection: CTS x MNPT-NL
• Lead-Free Status: NL (No Lead)

Typical Applications

• Potable Water Service Line Connections
• Water Meter Setter Assemblies
• Copper Tube to Threaded Pipe Transitions
• Residential and Municipal Water Distribution
• Fixture and Service Connection Adapters

Why A.Y. McDonald?

A.Y. McDonald fittings are built to provide dependable, code-conscious performance for waterworks and plumbing professionals. The lead-free (NL) designation on the 5130-012 reflects a design intended for potable water service, and the CTS x MNPT configuration offers a straightforward, reliable method for transitioning between copper tubing and threaded pipe connections. Choose A.Y. McDonald for consistent quality in water service fittings, backed by clear manufacturer part cross-referencing (74753-22) for accurate ordering and replacement across residential and municipal water distribution projects.