{
  "metadata": {
    "id": "smc-an20-n02",
    "name": "SMC AN20-N02 Silencer 1/4\" NPT",
    "type": "connector",
    "description": "Compact pneumatic silencer (muffler) with 1/4\" NPT male thread. Attaches to exhaust ports of valves or cylinders to reduce noise and filter out particles. SMC AN series (AN20-N02) features a sintered metal or polymer element that allows air to vent quietly to atmosphere.",
    "manufacturer": "SMC",
    "part_number": "AN20-N02",
    "datasheet_url": "https://www.smcusa.com/products/an05-40-silencer-compact-resin-male-thread~127812",
    "tags": [
      "silencer",
      "muffler",
      "pneumatic",
      "1/4 NPT",
      "SMC"
    ],
    "schema_version": "1.4.0",
    "version": "0.2.0",
    "taxonomy": [
      "mechanical.pneumatic"
    ]
  },
  "domains": [
    {
      "domain": "pneumatic",
      "resources": [
        {
          "id": "threaded_end",
          "functions": [
            {
              "name": "pneumatic_connection"
            }
          ],
          "connector_type": "threaded_port",
          "thread_standard": "NPT",
          "thread_size": "1/4\"",
          "thread_gender": "male",
          "port_size": "1/4\"",
          "working_pressure_bar": 10,
          "max_pressure_bar": 15,
          "compatible_fluids": [
            "compressed_air"
          ],
          "fluid_temperature_C": [
            -5,
            60
          ],
          "seal_type": "thread_sealant",
          "description": "Male 1/4\"-18 NPT thread for installation into exhaust port"
        }
      ],
      "interfaces": [
        {
          "id": "pneumatic_exhaust",
          "protocol": {
            "type": "pneumatic",
            "role": "exhaust"
          },
          "requires": [
            {
              "function": "pneumatic_connection",
              "count": 1
            }
          ],
          "constraints": [
            {
              "thread_standard": "NPT"
            },
            {
              "thread_size": "1/4\""
            },
            {
              "thread_gender": "female"
            },
            {
              "max_pressure_bar": ">=10.0"
            },
            {
              "compatible_fluids": "compressed_air"
            }
          ],
          "max_instances": 1,
          "description": "Exhaust silencer interface (vents air from a 1/4\" port to atmosphere quietly)",
          "name": "Pneumatic Exhaust"
        }
      ],
      "metadata": {
        "working_medium": "compressed_air",
        "inlet_filtration_required": false,
        "pressure_drop_bar": 0.1
      }
    },
    {
      "domain": "mechanical",
      "resources": [
        {
          "id": "body",
          "functions": [
            {
              "name": "mounting"
            }
          ],
          "material": "plastic_resin",
          "dimensions_mm": {
            "length": 25,
            "width": 15,
            "height": 15
          },
          "weight_g": 8,
          "description": "Compact plastic silencer body"
        }
      ],
      "interfaces": [],
      "metadata": {
        "mounting_method": "threaded",
        "orientation": "any"
      }
    },
    {
      "domain": "thermal",
      "resources": [],
      "interfaces": [],
      "metadata": {
        "operating_temperature_C": [
          -5,
          60
        ],
        "storage_temperature_C": [
          -20,
          80
        ]
      }
    }
  ],
  "design_rules": [
    "Install the silencer snugly into the exhaust port; do not over-tighten (plastic body could crack)",
    "Orient the exhaust opening such that expelled air can flow freely (do not obstruct the muffler)",
    "Replace or clean the silencer periodically if it becomes clogged to maintain performance"
  ],
  "validation_requirements": [
    "Ensure the port is 1/4\" NPT female to match the silencer's male thread",
    "Use a wrench on the silencer's hex base to tighten (avoid twisting the filter element)",
    "Verify that noise reduction is adequate and that backpressure caused by the silencer is within acceptable limits"
  ],
  "usage_notes": "Silencers are used on valve exhausts to dampen the loud release of air and to prevent debris from entering the valve from the atmosphere. This small silencer is well-suited for compact valves (like the 2V025-08) to reduce noise when they vent. It has a porous element that diffuses air, which also slightly slows the exhaust flow.",
  "application_examples": [
    "Attached to the exhaust port of a solenoid valve in a pneumatic circuit to reduce noise during each vent cycle",
    "Used on air cylinder vent ports to muffle the sound of air release at end-of-stroke",
    "Fitted on a pneumatic tool's exhaust to soften the expelled air noise and prevent oil mist spray"
  ],
  "compatibility_notes": "Designed for use with air. The 1/4\" NPT thread fits standard pneumatic equipment ports of that size. Not intended for fluids or for extremely high flow rates beyond its capacity (could cause backpressure). If using in oily or dusty environments, monitor for clogging.",
  "warnings": [
    "Clogged silencers will increase backpressure and may affect system operation; maintenance is required",
    "If a silencer is removed, remember that exhaust air will be loud and could propel debris - always replace or cover open exhausts",
    "The silencing element can become hot if a large volume of air is exhausted repeatedly in short time; allow for adequate ventilation"
  ]
}