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Flat metal heat transfer plate with dual pipe slots

Legend Valve

Legend Valve 800-363 Duo Heat Transfer Plate

SKU CH-0Y22-GQWNR

Duo heat transfer plate connects 3/8" and 1/2" tubing for efficient radiant heating systems

  • Fits 3/8" and 1/2" tubing for versatile installations
  • Duo design enables efficient heat transfer between lines
  • Legend Valve brand ensures reliable plumbing performance
  • California Prop 65 warning indicates chemical safety compliance
  • Model 800-363 identifies this specific heat transfer plate

Heat Transfer Plate for 3/8" and 1/2" Systems

The Legend Valve 800-363 Duo Heat Transfer Plate connects 3/8-inch and 1/2-inch plumbing lines. It is designed for installers who need a single fitting to join these two sizes in hydronic or heating applications.

Prop 65 Chemical Warning Applies

This product contains a chemical known to the State of California to cause cancer and birth defects or other reproductive harm. Installers must follow local safety regulations and handling guidelines when working with this fitting.

Direct Manufacturer Shipment

Orders of $75 or more ship free directly from the manufacturer. Verify the 3/8-inch and 1/2-inch connections match your piping before installation to avoid leaks or fitment issues.

How it compares

Measured against everything we stock in Hose Fittings, Adapters & Clamps, at today’s prices. Recalculated every night.

Price $16.99
Typical for this category: the median of 2,955 items is $17.99.

Specifications

Product
Brand nameLEGEND VALVE

Questions about this item

Which Legend Valve heat-transfer plate should I choose for a 3/8" or 1/2" pipe run?

The 800-363 Duo plate is made for both 3/8" and 1/2" tubing, so one part covers either size without needing a separate model.

What does the "Duo" label mean when the plate is installed in a hydronic system?

It indicates the single plate accepts two common tube diameters, letting you use the same heat-transfer component whether the circuit is 3/8" or 1/2".

How does the California Proposition 65 notice affect use of this plate in a potable-water loop?

The warning states the product contains a chemical known to cause cancer and reproductive harm; consult local codes before installing in drinking-water systems.

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