Back pressure regulator with floating seal support
US9447890B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2012 |
| Grant date | Sep 20, 2016 |
| Priority date | — |
| Expiry date | Nov 17, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/165
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A sealing apparatus for a back pressure regulator includes: a body defining a process surface, and including: at least one process void communicating with the process surface; a recess disposed in the process surface; a floating support hub disposed in the recess, carrying an O-ring; a vent void communicating with the recess; an inlet port disposed in fluid communication with the at least one process void and adapted to be coupled in fluid communication with a fluid at a process pressure; and an outlet port disposed in fluid communication with the vent void; and a diaphragm having opposed reference and process sides, the diaphragm disposed against the body such that the process side is substantially coplanar with the process surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.