Petticoat pipe

{
  "id": "MLC-T-IND-007160",
  "term": "Petticoat pipe",
  "field": "Industrial and trades",
  "definition": "A tapered pipe located within the smokebox of a steam locomotive, positioned above the blastpipe nozzle and leading into the chimney. Its primary function is to guide the exhaust steam from the blastpipe into the chimney, creating a vacuum that draws hot gases through the boiler tubes. The design of the petticoat pipe influences the locomotive's steaming rate.",
  "subject": "Rail equipment",
  "translations": {
    "de": "Petticoat-Rohr",
    "es": "tubo de enagua",
    "fr": "tuyau de jupe"
  },
  "url": "https://mlchart.com/terminology/industrial/petticoat-pipe/"
}