Legend Valve 312-305 Insert Male Adapter 1 in Barb X Mnpt

Product Description

The LEGEND VALVE 312-305 is a galvanized steel insert male adapter designed to connect barbed tubing to male NPT-threaded fittings in plumbing and hydronic piping systems. Rated at 125 psi, this adapter handles the pressure demands of residential and light commercial installations. The fitting measures 2 inches in length and features a single barb end on one side and a male NPT connection on the other, providing a secure, leak-resistant transition between flexible tubing and threaded pipe components. Licensed plumbers and pipefitters install this fitting during rough-in and finish plumbing work where barb-to-threaded transitions are required.

This adapter is suited for residential and commercial plumbing systems where flexible tubing meets NPT-threaded pipe or valve connections. Common applications include potable water supply lines, hydronic heating circuits, and general plumbing distribution systems. The galvanized steel construction resists corrosion in typical wet service environments. At a 1-inch nominal size with a barb-by-MNPT end style, it fits within standard trade plumbing configurations using compatible flexible insert tubing.

Key Features

• Galvanized steel construction for corrosion resistance in wet plumbing service
• 125 psi pressure rating suitable for residential and light commercial systems
• Barb x MNPT end style for transitioning flexible tubing to threaded connections
• 1-inch nominal size for standard plumbing system integration
• Single barb design provides a secure grip on compatible insert tubing
• Compact 2-inch length allows use in tight rough-in spaces

Compatibility

Designed as an OEM-style replacement and standard trade fitting for 1-inch nominal insert tubing applications in residential and commercial plumbing and hydronic systems.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and IPC guidelines. Shut off the water supply and relieve system pressure before making any connections. Secure the barb end fully onto compatible insert tubing and use an appropriate clamp or crimp ring to ensure a leak-free seal. Apply thread sealant tape or compound to the MNPT threads before tightening to avoid leaks at the threaded joint.

Technical Specifications

• Nominal Size: 1 inch
• End Style: Barb x MNPT
• Number of Barbs: 1
• Length: 2 inches
• Pressure Rating: 125 psi
• Material: Steel
• Finish: Galvanized
• Fitting Type: Adapter
• Origin: Import

Standard Information

• Brand: LEGEND VALVE
• Manufacturer Part Number: 312-305