Mixing tee check valve and method
US4690165A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1986 |
| Grant date | Sep 1, 1987 |
| Priority date | — |
| Expiry date | Aug 20, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7889
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A mixing valve includes a housing having inlet ports and an outlet port that intersect at a valve chamber. A valve core within the valve chamber includes passages in fluid communication with the inlet and outlet ports. The passages intersect at a cavity within the valve core. An elastomeric seal retained within the cavity sealingly engages the valve core around the passages in the absence of fluid pressure in the inlets. Injection of a pressurized fluid in one of the inlets causes the seal to move away from both the corresponding inlet passage to permit fluid flow from the pressurized inlet port to the outlet port and compresses the seal around the other inlet port to provide a tighter seal than existed before application of pressure to the first port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.