{
  "category": "Heat Exchangers",
  "vertical": "hvacr",
  "source": "https://getclaro.ai/resources/attribute-library/hvacr/heat-exchangers/",
  "status": "editorial-draft",
  "note": "Editorial reference template. Example values show format only and do not describe a real SKU. Not an official ETIM or ECLASS class.",
  "groups": [
    {
      "key": "identity",
      "name": "Identity",
      "check": "Preserve leading zeros and punctuation, validate against the manufacturer record, and check the GTIN check digit and packaging level before linking."
    },
    {
      "key": "technical",
      "name": "Technical specifications",
      "check": "Store the number and unit separately. Convert only when the source unit and test conditions are known."
    },
    {
      "key": "selection",
      "name": "Selection attributes",
      "check": "Map supplier wording to a governed vocabulary only after checking the source text and which variant it applies to."
    },
    {
      "key": "fit",
      "name": "Fit & compatibility",
      "check": "Keep model and series qualifiers. A similar-looking part is not a verified fit until a source says so."
    },
    {
      "key": "evidence",
      "name": "Evidence & compliance",
      "check": "Link the manufacturer document or label with its edition or date. Never copy a certification from a neighboring SKU."
    }
  ],
  "fields": [
    {
      "key": "manufacturer_part_number",
      "label": "Manufacturer Part Number",
      "group": "identity",
      "priority": "core",
      "value_type": "identifier",
      "unit": null,
      "example_format": "BPX-512-40"
    },
    {
      "key": "gtin_upc",
      "label": "GTIN / UPC",
      "group": "identity",
      "priority": "core",
      "value_type": "identifier",
      "unit": null,
      "example_format": "012345512407"
    },
    {
      "key": "exchanger_type",
      "label": "Exchanger Type",
      "group": "selection",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Brazed plate"
    },
    {
      "key": "heat_transfer_surface_area",
      "label": "Heat Transfer Surface Area",
      "group": "technical",
      "priority": "core",
      "value_type": "number",
      "unit": "ft²",
      "example_format": "16.0"
    },
    {
      "key": "plate_count_tube_count",
      "label": "Plate Count / Tube Count",
      "group": "technical",
      "priority": "core",
      "value_type": "number",
      "unit": null,
      "example_format": "40"
    },
    {
      "key": "connection_size_type",
      "label": "Connection Size & Type",
      "group": "fit",
      "priority": "core",
      "value_type": "text",
      "unit": "in",
      "example_format": "1-1/4 in MNPT"
    },
    {
      "key": "max_working_pressure_per_side",
      "label": "Max Working Pressure, Per Side",
      "group": "technical",
      "priority": "core",
      "value_type": "text",
      "unit": "psig",
      "example_format": "Side 1: 650 / Side 2: 435"
    },
    {
      "key": "design_temperature_range",
      "label": "Design Temperature Range",
      "group": "technical",
      "priority": "core",
      "value_type": "text",
      "unit": "°F",
      "example_format": "-256 to 437"
    },
    {
      "key": "plate_tube_material",
      "label": "Plate / Tube Material",
      "group": "selection",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "316L stainless steel"
    },
    {
      "key": "nominal_capacity_at_rating_conditions",
      "label": "Nominal Capacity at Rating Conditions",
      "group": "technical",
      "priority": "differentiating",
      "value_type": "number",
      "unit": "Btu/h",
      "example_format": "175,000 (at stated flows and temperatures)"
    },
    {
      "key": "braze_bond_material",
      "label": "Braze / Bond Material",
      "group": "selection",
      "priority": "differentiating",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Copper"
    },
    {
      "key": "gasket_material",
      "label": "Gasket Material (Gasketed Types)",
      "group": "selection",
      "priority": "differentiating",
      "value_type": "controlled",
      "unit": null,
      "example_format": "EPDM"
    },
    {
      "key": "wall_construction",
      "label": "Wall Construction",
      "group": "selection",
      "priority": "differentiating",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Single-wall"
    },
    {
      "key": "approved_refrigerants",
      "label": "Approved Refrigerants",
      "group": "fit",
      "priority": "differentiating",
      "value_type": "controlled",
      "unit": null,
      "example_format": "R-410A, R-454B, R-32"
    },
    {
      "key": "tema_type_designation",
      "label": "TEMA Type Designation (Shell-and-Tube)",
      "group": "selection",
      "priority": "differentiating",
      "value_type": "controlled",
      "unit": null,
      "example_format": "BEM"
    },
    {
      "key": "asme_section_viii_div_1_certification",
      "label": "ASME Section VIII Div. 1 Certification",
      "group": "evidence",
      "priority": "channel",
      "value_type": "controlled",
      "unit": null,
      "example_format": "ASME certification mark, U designator"
    },
    {
      "key": "canadian_registration_number_crn",
      "label": "Canadian Registration Number (CRN)",
      "group": "evidence",
      "priority": "channel",
      "value_type": "identifier",
      "unit": null,
      "example_format": "F12345.5C"
    },
    {
      "key": "country_of_origin",
      "label": "Country of Origin",
      "group": "evidence",
      "priority": "channel",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Sweden"
    }
  ],
  "evidence_columns": [
    "raw_value",
    "normalized_value",
    "source_uri",
    "source_page_or_row",
    "confidence",
    "review_state",
    "last_verified"
  ],
  "normalization_examples": [
    {
      "attribute": "Connection Size & Type",
      "variants": [
        "1-1/4\" MNPT",
        "1.25 in male NPT",
        "MPT 1-1/4",
        "1-1/4 MPT",
        "1¼ NPT (M)"
      ],
      "normalized": "1-1/4 in MNPT"
    },
    {
      "attribute": "Braze / Bond Material",
      "variants": [
        "Cu",
        "copper brazed",
        "99.9% Cu",
        "Cu-braze",
        "copper-brazed 316L"
      ],
      "normalized": "Copper"
    },
    {
      "attribute": "Max Working Pressure",
      "variants": [
        "435 psi",
        "30 bar",
        "3.0 MPa",
        "435 PSIG",
        "30bar",
        "30 barg"
      ],
      "normalized": "435 psig"
    }
  ]
}