Sanitary fluid pressure control valve
US7500491B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 11, 2007 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | Apr 11, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7834
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A sanitary fluid pressure control valve, including a valve body having an input side and a discharge side with a restricted chamber therebetween, and a reciprocable plug extending through the restricted chamber with one plug end on the input side and the other plug end on the discharge side. A diaphragm is secured to the one plug end, and defines a pressure chamber adjacent the discharge side. A fluid passage in the plug extends through the restricted chamber, and has an outlet adjacent the diaphragm and an inlet spaced from the plug other end. The pressure in the pressure chamber relative to the pressure in the discharge side substantially controls the position of the plug. In a first plug position, the fluid passage inlet is substantially blocked in the restricted chamber. The plug is reciprocable from the first position to fluid flow positions in which the fluid passage inlet is variously exposed on the input side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.