Variable proportioning valve for balanced pressure proportioning systems, and system containing the valve
US4417601A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 1980 |
| Grant date | Nov 29, 1983 |
| Priority date | — |
| Expiry date | Dec 19, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8309
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A novel variable proportioning valve for balanced pressure proportioning systems and variable liquid proportioning system incorporating such a valve. The valve is adjustably operable in a system to proportion or meter two liquids, for example, at constant pre-selected percentages with a resultant substantially constant or fixed ratio of the liquids even under varying flow conditions. The principles can be used with different and additional fluids. The variable proportioning valve incorporates in the body thereof a flow control plug coacting with an outlet port to control net outlet flow, and the plug is capable of having such configurations and sizes whereby relative motion between the valve plug and the port can provide a wide range of flow outputs of different specific characteristics. The valve has a construction permitting ease of disassembly for valve plug removal and replacement for purposes of repair, or for altering the operating characteristics of the valve, and therefore, that of the system. The present invention while particularly useful in conjunction with firefighting systems of a type utilizing a foam mixture for fire control, for example, is also desireably useful fo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.