Backflow prevention assembly having a cartridge with dual zone testing
US11835147B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 16, 2021 |
| Grant date | Dec 5, 2023 |
| Priority date | — |
| Expiry date | Aug 16, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K37/0091
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A backflow prevention assembly includes a body forming two buckets, wherein flow passes through the body from an inlet to an outlet along an axis and consecutively through each of the buckets. A single zone test cover encloses a first of the buckets to form a single zone chamber. A dual zone test cover encloses a second of the buckets with a dual zone cartridge assembly therein. The dual zone test cover has two test cocks. The dual zone cartridge assembly includes a frame having a valve seat, wherein the frame includes a lumen providing fluid communication from a dual zone chamber upstream of the valve seat to a first of the two test cocks of the dual zone test cover, and wherein the second of the two test cocks of the dual zone test cover is in fluid communication with the dual zone chamber downstream of the valve seat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.