Suck back valve
US6029903A · kind A · utility
27Cited by
6References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1998 |
| Grant date | Feb 29, 2000 |
| Priority date | — |
| Expiry date | Mar 6, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K23/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A suck back valve is equipped with a coupling having a fluid passage with a first port formed in one end, and a second port formed in another end thereof, a suck back mechanism for sucking a pressurized fluid inside the fluid passage under a displacement action of a second diaphragm which is displaced by a pilot pressure, and an ON/OFF valve disposed coaxially with the second diaphragm for opening and closing the fluid passage by displacement and movement thereof with the second diaphragm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.