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Stainless steel double wall heat exchanger thirty eight plates three quarter inch connections

Legend Valve

Legend Valve 807-005 3/4 Double Wall HX 38 Plate

SKU CH-XX7G-MEP4N

A 3/4-inch double-wall heat exchanger with 38 plates for RV heating and cooling systems

  • 3/4" double-wall design separates fluids for safer heat transfer
  • 38 plates provide large surface area in a compact heat exchanger
  • Model 807-005 built by Legend Valve for reliable HVAC performance
  • Double-wall construction meets safety codes for potable-water applications
  • California Prop 65 warning informs installers of regulated substances

3/4 Double Wall Heat Exchanger

The Legend Valve 807-005 is a 38-plate heat exchanger built for RV hydronic heating and cooling circuits. It suits owners who need efficient thermal transfer between isolated fluid loops in a compact footprint.

Sustained thermal performance

The double-wall construction keeps potable and non-potable fluids physically separated while maintaining steady heat transfer during continuous circulation. Thirty-eight plates provide extended surface area so outlet temperatures remain stable over long heating cycles.

Pre-installation checks

Verify that your system uses 3/4 inch connections compatible with the exchanger ports. Confirm the mounting orientation and available space match the unit's plate stack length. Note the Proposition 65 warning regarding listed chemicals before handling or installing the component.

Highlights

  • 3/4" double-wall design separates fluids for safer heat transfer
  • 38 plates provide large surface area in a compact heat exchanger
  • Model 807-005 built by Legend Valve for reliable HVAC performance
  • Double-wall construction meets safety codes for potable-water applications
  • California Prop 65 warning informs installers of regulated substances

Specifications

BrandLEGEND VALVE

Questions about this item

Does the 807-005 double-wall heat exchanger run hot or draw extra power when it operates continuously in an RV heating system?

The unit has no moving parts or electrical draw, so it produces no heat of its own and adds no power load during all-day operation.

What plumbing connections must already be in place for the 3/4-inch double-wall HX with 38 plates to install correctly?

You need matching 3/4-inch supply and return lines on both the boiler side and the potable-water side, plus isolation valves and air vents for each circuit.

Will the 38-plate Legend Valve 807-005 work alongside an older RV boiler that uses a single-wall exchanger?

Yes, the double-wall design simply replaces the single-wall unit; the 3/4-inch ports line up with existing piping and the 38 plates maintain compatible flow rates.

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