Automatic valve with manual override for fire engine high pressure water system
US6564877B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2000 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | Dec 12, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62C35/68
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An apparatus and method for releasing pressure and draining a high pressure water system includes a valve comprising a valve body having an inner cavity for water to flow therethrough, an inlet opening and an outlet opening in fluid connection with the inner cavity, a valve seat assembly comprising a first biasing member exerting a force against a valve plunger cooperating with a seal to thereby substantially close the valve at or above a predetermined system pressure, and an override comprising a manual activator having a second biasing member and a cooperating member positioned to transmit to said valve seat assembly a force applied by an operator, to thereby manually open the valve when pressure exceeds the predetermined system pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.