Dump valve
US4573489A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1984 |
| Grant date | Mar 4, 1986 |
| Priority date | — |
| Expiry date | Dec 12, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7319
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A dump valve for dumping liquid from the bottom of a tank comprising an elongated valve body insertable into the lower end of the tank so that the valve body extends deeply into the tank, the innermost portion of the valve body having an inner port communicating with the interior of the tank, the valve body having a portion extending exterior of the tank when the body is inserted into the tank, the valve body having a central axial bore extending therethrough and communicating with the inner port for directing liquid away from the tank, a drain passage connected to the exterior portion of the valve body and communicating with the axial bore for draining liquid from the tank, a pair of head plates connected to the exterior portion of the valve body, the head plates being connected to each other and forming a diaphragm chamber therebetween, a diaphragm held in sealed clamping engagement between the head plates and dividing the chamber into two separate compartments sealed from each other, an elongated valve stem extending within the axial bore from an inner end adjacent the inner port to an outer end which extends through one of the plates and is connected to the diaphragm, a valve c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.