System for remotely servicing a top loading captive ball valve

Patent · 31 December 1995

OSTI ID:870482

Berry, Stephen M ^[1]; Porter, Matthew L ^[2]

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1. Idaho Falls, ID
2. North Potomac, MD

An attachment for facilitating servicing of a valve, the valve including: an assembly composed of a valve seat defining a flow path, a flow control member movable relative to the valve seat for blocking or unblocking the valve seat, and a control device including a stem coupled to the flow control member and operable for moving the flow control member relative to the valve seat; a housing for receiving the assembly, the housing having an opening via which the assembly can be removed from, and installed in, the housing, and the housing having a plurality of threaded studs which surround the opening and project away from the housing; a valve housing cover for closing and sealing the opening in the housing, the cover having a first bore for passage of the stem of the control device when the assembly is installed in the housing and a plurality of second bores each located for passage of a respective stud when the cover closes the opening in the housing. A plurality of threaded nuts are engageable with the studs for securing the cover to the housing when the cover closes the opening in the housing, wherein the attachment comprises: a plurality of nut guide devices removable from the housing and each operatively associated with a respective stud for retaining a respective nut and guiding the respective nut into alignment with the respective stud to enable the respective nut to be rotated into engagement with the respective stud; and aligning the nut guide devices with the studs.

• Research Organization: WESTINGHOUSE IDAHO NUCLEAR CO
• DOE Contract Number: AC07-84ID12435
• Assignee: Lockheed Idaho Technologies Company (Idaho Falls, ID)
• Patent Number(s): US 5529087
• OSTI ID: 870482
• Country of Publication: United States
• Language: English

Related Subjects

/137/251/
aligning
alignment
assembly
associated
attachment
ball
ball valve
blocking
bore
bores
captive
closes
closing
composed
comprises
control
control device
coupled
cover
defining
device
device including
devices
enable
engageable
engagement
facilitating
flow
flow control
flow path
guide
guide devices
guiding
housing
including
installed
loading
located
movable
movable relative
moving
nut
nuts
operable
operatively
operatively associated
passage
path
plurality
receiving
relative
remotely
removable
removed
respective
retaining
rotated
sealing
seat
securing
servicing
stud
studs
surround
threaded
top
unblocking
valve
valve housing
valve seat
via