System for remotely servicing a top loading captive ball valve

Patent · Mon Jan 01 00:00:00 EST 1996

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

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