A.Y. McDonald 5140-112 Lead-Free 3/4" CTS x FNPT Pipe Adapter

A.Y. McDonald 5140-112 Lead-Free 3/4" CTS x FNPT Pipe Adapter

The A.Y. McDonald 5140-112 (cross-referenced as 74754-22) is a 3/4" adapter fitting engineered to transition from CTS (Copper Tube Size) piping to female national pipe thread (FNPT) connections. This single-piece adapter gives plumbing and water service professionals a reliable way to join CTS-based piping systems to threaded components without the need for additional couplings. Carrying an NL (No Lead) designation, the 5140-112 is built to meet lead-free requirements for potable water applications, making it a dependable choice for water service and distribution lines where a transition between CTS and FNPT connection types is required. Its compact, straightforward design supports fast, code-compliant installation in both new construction and repair scenarios.

Key Features

• Trade Size: 3/4" adapter sized for common water service and distribution piping runs.
• Connection Type: CTS x FNPT configuration allows a direct transition from copper tube size piping to female national pipe thread fittings.
• Lead-Free Compliant: NL designation indicates the fitting meets lead-free requirements for potable water applications.
• Model Reference: Identified by A.Y. McDonald part number 5140-112, also cross-referenced as 74754-22, for accurate ordering and replacement.
• Adapter Function: Provides a single-piece solution for connecting dissimilar connection types without additional couplings, simplifying installation and reducing potential leak points.
• Reliable Threaded Transition: The FNPT side accepts standard male-threaded fittings, giving installers flexibility when tying into existing threaded plumbing components.

Technical Specifications

• Part Number: 5140-112 / 74754-22
• Size: 3/4"
• Connection: CTS x FNPT-NL
• Category: Pipe Fitting Adapter

Typical Applications

• Water Service Line Installations
• Potable Water Distribution Systems
• Transitioning CTS Piping to Threaded Fixtures
• Residential and Commercial Plumbing Repairs
• New Construction Water Piping Connections

Why A.Y. McDonald?

A.Y. McDonald manufactures water works and plumbing fittings built for dependable, code-compliant performance. The 5140-112 adapter's lead-free (NL) construction and precise CTS x FNPT transition design make it a practical choice for professionals who need a dependable connection point between copper tube size piping and threaded plumbing components. Choosing an A.Y. McDonald fitting means specifying a part built to consistent manufacturing standards for water system installations, backed by clear part number cross-referencing for accurate ordering and replacement in the field.