Load-profile compensating stuffing-box packing system for valves having stems of uniform cross-section
US6443423B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 24, 2000 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Jul 24, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K41/04
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve packing system uniformly distributes the radial packing load in a valve stuffing box. In one embodiment the cylindrical wall of the stuffing box is tapered with a flat bottom. In other embodiments the cylindrical wall of the stuffing box is straight with a tapered outbound bottom, the bottom of the packing ring is tapered at the same outbound angle to match the outbound taper at the bottom of the cylindrical stuffing box, the cylindrical wall of the stuffing box is straight with a tapered inbound bottom, the bottom of the packing ring is tapered at the same inbound angle to match the inbound taper at the bottom of the cylindrical stuffing box, and the cylindrical wall of the stuffing box is straight with a male “V” x-section at the bottom of the stuffing box to accept a packing ring having a female “V” groove on the bottom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.