{
  "$type": "site.standard.document",
  "description": "Disclosed is a valve apparatus having a first pressure compensation valve, a first, gas-tight, cap-like membrane device, and a gas-permeable, moisture-permeable, and yet water-impermeable second membrane device. The first pressure compensation valve, in particular a back-pressure valve, having a…",
  "path": "/patents/1365586",
  "publishedAt": "2024-06-27T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F16K27/003",
    "Illinois Tool Works Inc."
  ],
  "textContent": "Disclosed is a valve apparatus having a first pressure compensation valve, a first, gas-tight, cap-like membrane device, and a gas-permeable, moisture-permeable, and yet water-impermeable second membrane device. The first pressure compensation valve, in particular a back-pressure valve, having a first valve housing, which limits a pressure compensation opening and comprising a housing side and a covering side, comprising or consisting of a first, gas-tight, cap-like membrane device covering a first pressure compensation opening and releasing the first pressure compensation opening from a predetermined negative pressure prevailing on the housing side in order to enable a pressure compensation between a housing device and an environment, and a gas-permeable, moisture-permeable, and yet water-impermeable second membrane device arranged on the covering side and in series to the first membrane device, covering a second pressure compensation opening and preventing water entry into the valve housing and thus into a housing device.",
  "title": "Valve Device, Valve Housing and Universal Valve Housing"
}