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Brass double-wall heat exchanger, 3/4 inch, 14 plates

Legend Valve

Legend Valve 807-004 3/4" Double Wall HE HX140-14 air conditioning

SKU CH-J8VV-JWWN6

A 3/4 inch double-wall heat exchanger with 14 plates for air conditioning systems

  • 3/4-inch double-wall construction for durable HVAC connections
  • 14-plate heat exchanger design for efficient thermal transfer
  • New condition ensures reliable performance from first installation
  • Legend Valve brand recognised in RV heating and cooling systems
  • California Proposition 65 notice informs safe handling practices

Legend Valve 807-004 Double Wall HX

The Legend Valve 807-004 is a 3/4 inch double-wall heat exchanger designed for RV heating, ventilation and air conditioning systems. It uses a 14-plate HX140-14 core to transfer thermal energy between fluid circuits. This component suits technicians and owners maintaining or upgrading RV climate control loops. It arrives new and ships directly from the manufacturer.

Build and Connection Details

The double-wall construction adds a safety barrier between the two fluid paths, reducing the risk of cross-contamination during operation. Its 3/4 inch sizing determines the piping or hose fittings required for a secure, leak-free installation. The 14-plate layout influences the unit's physical footprint and the space needed for mounting within the RV chassis. California Proposition 65 warnings apply because the product contains listed chemicals.

Compatibility Checks Before Ordering

Verify that your existing RV system uses 3/4 inch connections and can accommodate a double-wall plate exchanger of this plate count. Confirm the fluid types and operating pressures match the exchanger's intended service class. Ensure the available mounting space fits the HX140-14 body without interfering with surrounding components. Review the Proposition 65 notice if your project requires compliance documentation.

Highlights

  • 3/4-inch double-wall construction for durable HVAC connections
  • 14-plate heat exchanger design for efficient thermal transfer
  • New condition ensures reliable performance from first installation
  • Legend Valve brand recognised in RV heating and cooling systems
  • California Proposition 65 notice informs safe handling practices

Specifications

BrandLEGEND VALVE

Questions about this item

What connection size does the 3/4" double-wall heat exchanger use?

The unit uses a 3/4 inch double-wall connection for the heat exchange circuit.

What plate count defines the core size of the HX140-14 model?

The core is built with 14 plates in a double-wall configuration.

How is the Legend Valve 807-004 typically installed in an RV system?

It is plumbed into the hydronic loop using the 3/4 inch fittings; the step often missed is verifying double-wall integrity after tightening.

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