Pipe pressure testing method and apparatus
US8210029B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2009 |
| Grant date | Jul 3, 2012 |
| Priority date | — |
| Expiry date | Nov 8, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/2853
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pipeline pressure testing assembly has a fitting defining a flow path and having a port on a wall of the fitting into which a pressure testing device is removably inserted along a central axis of the port for pressure testing. The port is circular, larger than the interior diameter of the pipeline and located at or above the tube forming the flow path through the fitting. The fitting has a recess encircling at least part of the flow path and opening to the port to receive the testing and sealing devices. The recess is formed by two opposing walls inclined relative to the central axis of the recess. The recess walls at the top of the flow path by the port are spaced apart a distance as large as the pipe diameter for cleanout and inspection. A tubular valve stem screws into the testing device and has a rotary valve blocking flow through the tubular valve stem. Flow through the fitting is blocked with the rotary valve closed and the tubular valve stem in a first position. Flow through the testing device is allowed with the rotary valve closed and the tubular valve stem in an open position. With the rotary valve open, flow through the tubular valve stem is permitted when the tubular …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.