{
  "object_id": "c05-stage-drains",
  "svg": "c05-stage-drains.svg",
  "kind": "hypothetical_pressure_state",
  "pressure_reference": "gauge relative tosame localatmosphericreference",
  "units": {
    "pressure": "kPa",
    "pressure_difference": "kPa"
  },
  "states": {
    "lower_stage": 100,
    "higher_stage": 500,
    "header": 300
  },
  "assumptions": [
    "same model elevation",
    "ignoreliquidheadandlineloss fordirectionillustration",
    "communicatingopenpath;no effectiveisolating/controlbarrier credited"
  ],
  "directions": [
    {
      "from": "higher_stage",
      "to": "header",
      "delta_kPa": 200
    },
    {
      "from": "header",
      "to": "lower_stage",
      "delta_kPa": 200,
      "consequence": "potentialreversecommunicationtowardlowerpressurecylinder"
    }
  ],
  "limits": [
    "Notflowrate/volume/protective-deviceacceptance",
    "Actualhead/valve/drain/destination andstartupshutdownisolationstatesrequired",
    "Processliquiddrain distinctfromstuffingbox/distancepiecegasleakoff"
  ]
}