Pipes and tubular conduits – With closures and plugs – Test plugs
Patent
1994-03-25
1996-05-14
Scherbel, David
Pipes and tubular conduits
With closures and plugs
Test plugs
138 98, F16L 5510
Patent
active
055158854
ABSTRACT:
The invention relates to a plug devices for sealing an open end of a pipe which is being tested for structural integrity. The plug assembly has a reduced diameter first portion which is adapted for engagement with the interior of the pipe and a second, enlarged diameter portion which houses a piston that slidably moves within the central opening of the second portion. A compressible flexible packer element mounted on the first portion is compressed by the piston of the second portion to facilitate fluid-tight engagement with the interior of the pipe. The second portion of the assembly is provided with suitable ports for admitting setting and release pressure acting on the piston. One of the plug assemblies has a transverse bore for engagement with an inlet valve for admitting pressurized fluid into the interior of the pipe. A companion plug assembly adapted for engaging the opposite end of the pipe has a transverse bore fitted with a relief valve for allowing escape of air while the pipe is being filled with test fluid and allowing relief of pressure after the test has been completed.
REFERENCES:
patent: 3857414 (1974-12-01), Richardson et al.
patent: 3920048 (1975-11-01), Mingus
patent: 3978892 (1976-09-01), Scodino
patent: 4385643 (1983-05-01), Noe
patent: 4393674 (1983-07-01), Rasmussen
patent: 4452070 (1984-06-01), Kipp
patent: 4474216 (1984-10-01), Noe
patent: 4571986 (1986-02-01), Fujii et al.
patent: 4602500 (1986-07-01), Kelly
patent: 4611485 (1986-09-01), Leslie
patent: 4753108 (1988-06-01), Jansch
patent: 5181543 (1993-01-01), Hendzel
patent: 5337598 (1994-08-01), Rab
Hook James F.
Scherbel David
LandOfFree
Plug assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Plug assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plug assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1890599