Legend Valve 830-140 Tube X Manifold Adapter 5/16 in Pair

Product Description

The LEGEND VALVE 830-140 is a pair of 5/16-inch tube x manifold adapters designed for use in hydronic and radiant heating distribution systems. These adapters provide a reliable transition point between small-diameter tubing and manifold ports, allowing installers to make secure, leak-free connections without additional fittings. Sold as a matched pair, they are suited for residential and light commercial plumbing and heating applications where consistent flow distribution across multiple zones is required. Plumbers and hydronic heating technicians are the primary installers of these components.

These adapters are commonly used in radiant floor heating systems, baseboard distribution manifolds, and other hydronic applications where 5/16-inch tubing connects directly to a manifold body. They are appropriate for new installations as well as retrofit work where existing manifold ports require a compatible adapter to accept smaller-diameter tubing. The pair configuration ensures both supply and return connections can be made with matched components from a single purchase.

Key Features

• 5/16-inch tube connection for compatibility with small-diameter hydronic tubing
• Manifold adapter design for direct port connection on distribution manifolds
• Sold as a pair to cover both supply and return connections
• Engineered for leak-free performance in pressurized hydronic systems

Compatibility

Designed as an OEM-style replacement and standard-fit adapter for residential and light commercial hydronic manifold systems accepting 5/16-inch tube connections.

Installation Notes

Installation should be performed by a licensed plumber or qualified hydronic heating technician. Shut off and depressurize the hydronic system before removing or installing any manifold fittings. Inspect mating manifold ports for debris or damage before seating the adapters. Follow applicable IPC and local plumbing code requirements for hydronic system connections and pressure testing after installation.

Technical Specifications

• Tube Size: 5/16 inches
• Connection Type: Tube x Manifold Adapter
• Quantity: Sold as a pair

Standard Information

• Brand: LEGEND VALVE
• Manufacturer Part Number: 830-140