A.y. Mcdonald 5421-113 Gate Valve 3 Inch Fpt Lead Free

Product Description

The A.Y. MCDONALD 5421-113 is a 3-inch female pipe thread (FPT) gate valve rated at 125 cold working pressure (CWP). It is constructed to meet lead-free standards, making it suitable for potable water systems where material compliance is required by code. Gate valves in this class are used to provide full-bore shutoff with minimal flow restriction when fully open. At 16 pounds, this is a substantial valve appropriate for commercial and industrial water distribution, irrigation mains, and large-diameter service lines. Licensed plumbers and pipefitters are the primary installers for valves of this size and pressure rating.

This valve is designed for installation on 3-inch threaded pipe systems carrying cold water. Typical applications include municipal service connections, commercial building water mains, irrigation system headers, and industrial process water lines where a reliable full-bore shutoff is needed. Its lead-free construction satisfies requirements under the Reduction of Lead in Drinking Water Act and applicable state plumbing codes for any system conveying water intended for human consumption.

Key Features

• 3-inch FPT connections for direct threaded pipe installation
• 125 CWP rating for standard cold water distribution service
• Lead-free construction compliant with potable water regulations
• Full-bore gate design minimizes pressure drop when fully open
• Substantial 16-pound build suited for large-diameter commercial service

Compatibility

Designed as an OEM-style replacement or new-installation gate valve for 3-inch threaded pipe systems rated at 125 CWP in potable water and general water distribution applications.

Installation Notes

Installation of a 3-inch gate valve of this size should be performed by a licensed plumber or pipefitter in accordance with the International Plumbing Code (IPC) and applicable local codes. Shut off the water supply and depressurize the line completely before removing any existing valve or making new connections. Apply appropriate thread sealant or PTFE tape to all threaded joints and tighten to a snug, leak-free fit without over-torquing the valve body. Gate valves should be installed in the fully open or fully closed position and are not intended for throttling service.

Technical Specifications

• Connection Type: FPT (Female Pipe Thread)
• Size: 3 inches
• Pressure Rating: 125 CWP
• Lead Free: Yes
• Weight: 16 pounds

Standard Information

• Brand: A.Y. MCDONALD
• Manufacturer Part Number: 5421-113