Radial-directed fluid-pressure-loaded all-metal-sealed gate valve
- Livermore, CA
A large diameter gate valve uses a radially directed fluid pressure loaded all metal seal formed by engaging and disengaging a fixed and a moveable seal element. The fixed element is formed of a circular flange which contains a pressure chamber with a deformable wall, and is mounted to the valve body. The moving seal element contains an annular recess which mates with the circular flange, and is carried on a moveable sub-frame which moves on a frame fixed in the valve body. The valve opening defines an axis in a first direction, and the sub-frame moves through the valve body in a second direction which is substantially perpendicular to the first direction. The sub-frame and moveable seal element move in the second direction until the moveable element reaches a stop mounted in the valve body at which position the moveable element is aligned with but spaced apart from the fixed element. As the sub-frame continues to move in the second direction, the moveable element is forced to move toward and engage the fixed element. The pressure chamber in the flange is then pressurized to complete the seal.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- DOE Contract Number:
- AC03-87ER80537
- Assignee:
- Batzer Vacuum Technology Associates, Inc. (Livermore, CA)
- Patent Number(s):
- US 5083748
- OSTI ID:
- 868146
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
fluid-pressure-loaded
all-metal-sealed
gate
valve
diameter
radially
directed
fluid
pressure
loaded
metal
seal
formed
engaging
disengaging
fixed
moveable
element
circular
flange
contains
chamber
deformable
wall
mounted
moving
annular
recess
mates
carried
sub-frame
moves
frame
defines
axis
direction
substantially
perpendicular
move
reaches
stop
position
aligned
spaced
apart
continues
forced
engage
pressurized
complete
annular recess
substantially perpendicular
pressure chamber
spaced apart
fluid pressure
seal element
metal seal
gate valve
radially directed
seal formed
deformable wall
top mounted
frame moves
moving seal
seal form
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