Top entry flow control valve with two sets of orifices
US5217046A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 27, 1992 |
| Grant date | Jun 8, 1993 |
| Priority date | — |
| Expiry date | Jul 27, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87981
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A top entry flow control valve having a body with an inlet port, an outlet port and an access opening. The body has a cavity connected with the access opening and communicating with the inlet port and outlet port to allow fluid flow through the valve body. A pair of discs with orifices are positioned within the cavity to control flow into the outlet port by rotating one of the discs to change the degree of alignment between the disc orifices. A sleeve and rotatable cylinder are located within the cavity to control flow from the inlet port. The sleeve has a bore which receives the cylinder and a side wall with orifices extending into the bore. The cylinder has an open end which extends into the cylinder to form a chamber and a side wall with orifices penetrating into the chamber. The open end of the cylinder is attached to the rotatable disc. By rotating the cylinder, the alignment of the sleeve orifices with the cylinder orifices is changed to control flow from the inlet port into the chamber. A cover is removably attached over the access opening and secures the sleeve, cylinder and discs in the cavity. A valve stem extends from the cylinder through the cover to allow turning the c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.