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Brass double-wall heat exchanger, 24 plates, 3/4 inch connections

Legend Valve

Legend Valve 807-036 3/4" Double Wall HX240BDW-24

SKU CH-H8M6-JNVMS

3/4-inch double-wall heat exchanger with 24 plates for RV heating systems

  • 3/4-inch double-wall design improves heat transfer
  • 24 plates provide efficient thermal exchange in compact form
  • HX240BDW-24 model fits tight RV installation spaces
  • Legend Valve brand ensures reliable HVAC component quality
  • New condition delivers full factory performance from installation

Compact Double-Wall Heat Exchanger

The Legend Valve 807-036 is a 3/4-inch double-wall plate heat exchanger designed for hydronic heating and potable water systems. Its compact 24-plate construction suits residential and light-commercial installations where space is limited. The unit provides a physical barrier between fluid circuits for safety compliance.

24-Plate Double-Wall Construction

The defining specification is the 24-plate double-wall design that separates two fluid paths with an air gap to prevent cross-contamination. This arrangement meets codes requiring double-wall separation for potable water heating. The 3/4-inch connections allow direct integration into standard copper or PEX piping without adapters.

Installation Fit and System Role

The exchanger installs inline between a boiler or solar loop and a domestic hot water tank, requiring only standard plumbing fittings and no electrical supply. Its double-wall construction frees the installer from adding a separate intermediate heat exchanger to satisfy safety regulations. Buyers needing higher capacity or larger connection sizes should select a different model.

Highlights

  • 3/4-inch double-wall design improves heat transfer
  • 24 plates provide efficient thermal exchange in compact form
  • HX240BDW-24 model fits tight RV installation spaces
  • Legend Valve brand ensures reliable HVAC component quality
  • New condition delivers full factory performance from installation

Specifications

BrandLEGEND VALVE

Questions about this item

How does the 24-plate design affect heat transfer in a real installation?

Twenty-four plates create a larger surface area for fluid-to-fluid exchange, so the unit can move more heat in a compact footprint than smaller-plate models.

What connection standard does the 3/4-inch fitting follow and what flow rate does it limit?

The 3/4-inch NPT threads match standard plumbing practice and typically pass enough flow for residential hydronic loops without becoming the system bottleneck.

What clearance and mounting provisions does the double-wall heat exchanger need?

The compact double-wall body fits in tight mechanical rooms and can be bracketed to a wall or frame using the integral mounting tabs on the shell.

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