{
  "metadata": {
    "id": "smc-kq2f07-34n",
    "name": "SMC KQ2F07-34N Female Adapter 1/8\" NPT to 1/4\" Tube",
    "type": "connector",
    "description": "SMC KQ2 series one-touch fitting with a female threaded port. Connects a 1/8\" NPT male thread to a 1/4\" OD push-in tube. Model KQ2F07-34N provides a compact way to attach a small NPT-threaded component (like a pressure sensor or gauge) into a 1/4\" tubing line.",
    "manufacturer": "SMC",
    "part_number": "KQ2F07-34N",
    "datasheet_url": "https://www.smcusa.com/products/KQ2-One-touch-Fitting-for-Inch-Size-Tube-UNF-NPT-Connection-Thread~87071?partNumber=KQ2F07-34N",
    "tags": [
      "SMC",
      "fitting",
      "female NPT",
      "1/8 NPT",
      "1/4 OD tube",
      "KQ2"
    ],
    "schema_version": "1.4.0",
    "version": "0.2.0",
    "taxonomy": [
      "mechanical.pneumatic"
    ]
  },
  "domains": [
    {
      "domain": "pneumatic",
      "resources": [
        {
          "id": "thread_port",
          "functions": [
            {
              "name": "pneumatic_connection"
            }
          ],
          "connector_type": "threaded_port",
          "thread_standard": "NPT",
          "thread_size": "1/8\"",
          "thread_gender": "female",
          "port_size": "1/8\"",
          "working_pressure_bar": 10,
          "max_pressure_bar": 10,
          "compatible_fluids": [
            "compressed_air"
          ],
          "fluid_temperature_C": [
            -5,
            60
          ],
          "seal_type": "thread_sealant",
          "description": "Female 1/8\"-27 NPT port (accepts 1/8\" NPT male thread, e.g., sensor or gauge)"
        },
        {
          "id": "tube_port",
          "functions": [
            {
              "name": "pneumatic_connection"
            }
          ],
          "connector_type": "quick_connect",
          "tube_od_inch": 0.25,
          "port_size": "1/4\" OD tube",
          "working_pressure_bar": 10,
          "max_pressure_bar": 10,
          "compatible_fluids": [
            "compressed_air"
          ],
          "fluid_temperature_C": [
            -5,
            60
          ],
          "seal_type": "o_ring",
          "description": "Push-to-connect tube port for 1/4\" OD tubing"
        }
      ],
      "interfaces": [
        {
          "id": "npt_female_input",
          "protocol": {
            "type": "pneumatic",
            "role": "input"
          },
          "requires": [
            {
              "function": "pneumatic_connection",
              "count": 1
            }
          ],
          "constraints": [
            {
              "thread_standard": "NPT"
            },
            {
              "thread_size": "1/8\""
            },
            {
              "thread_gender": "male"
            },
            {
              "max_pressure_bar": "<=10.0"
            },
            {
              "compatible_fluids": "compressed_air"
            }
          ],
          "max_instances": 1,
          "description": "1/8\" NPT female input for threaded components",
          "name": "Npt Female Input"
        },
        {
          "id": "tube_output",
          "protocol": {
            "type": "pneumatic",
            "role": "output"
          },
          "requires": [
            {
              "function": "pneumatic_connection",
              "count": 1
            }
          ],
          "constraints": [
            {
              "tube_od_inch": 0.25
            },
            {
              "max_pressure_bar": "<=10.0"
            },
            {
              "compatible_fluids": "compressed_air"
            }
          ],
          "max_instances": 1,
          "description": "1/4\" OD tube output connection",
          "name": "Tube Output"
        }
      ],
      "metadata": {
        "working_medium": "compressed_air",
        "max_pressure_bar": 10,
        "fluid_temperature_C": [
          -5,
          60
        ]
      }
    },
    {
      "domain": "mechanical",
      "resources": [
        {
          "id": "fitting_body",
          "functions": [
            {
              "name": "mounting"
            }
          ],
          "material": "pbt_plastic",
          "dimensions_mm": {
            "length": 30,
            "width": 12,
            "height": 12
          },
          "weight_g": 6,
          "description": "PBT plastic fitting body with hex wrench flats"
        }
      ],
      "interfaces": [],
      "metadata": {
        "mounting_method": "threaded",
        "orientation": "any"
      }
    },
    {
      "domain": "thermal",
      "resources": [],
      "interfaces": [],
      "metadata": {
        "operating_temperature_C": [
          -5,
          60
        ],
        "storage_temperature_C": [
          -20,
          80
        ]
      }
    }
  ],
  "design_rules": [
    "Use PTFE tape or sealant on the 1/8\" NPT male thread that will screw into the fitting's female port",
    "Insert the 1/4\" tube fully into the push-in end until it clicks and seals",
    "Avoid excessive torque when installing a metal sensor or fitting into the female thread (support the fitting with a wrench on its hex body)"
  ],
  "validation_requirements": [
    "Ensure the component threading into the 1/8\" port is NPT (tapered) and not a different standard",
    "Verify the 1/4\" tubing is properly secured in the push-to-connect side (straight cut, fully inserted)",
    "Check for leaks at both the threaded connection and the tube connection after assembly"
  ],
  "usage_notes": "This adapter is especially useful for adding a pressure transducer or gauge into a plastic tubing line. For example, one can tee off a 1/4\" air line and use this fitting to mount a 1/8\" NPT pressure sensor. It provides a sealed transition from a flexible tube to a threaded device.",
  "application_examples": [
    "Mounting a 1/8\" NPT pressure sensor in a pneumatic line by connecting it via this fitting to the main 1/4\" tubing",
    "Attaching a small gauge (with 1/8\" NPT male threads) directly onto a tubing system without needing a rigid manifold"
  ],
  "compatibility_notes": "Works with any standard 1/8\" NPT male threaded component and 1/4\" OD tubing. The internal O-ring and collet secure the tube, while the tapered thread ensures a seal on the threaded side (with sealant). Ensure the fluid medium and temperature are within SMC's specified range for this fitting.",
  "warnings": [
    "Do not use this plastic-bodied fitting on systems exceeding its pressure or temperature rating; sudden failure could occur",
    "When connecting heavy components (like a metal gauge) via this fitting, support the assembly to avoid stress on the plastic body",
    "Periodically inspect the tube connection; vibration or impacts could potentially loosen the tube if not properly inserted"
  ]
}