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Port section walls are
flush with duct inner walls, minimizing pressure drop.
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Port section carries
duct axial and shear loads through side frame members.
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Patented shallow seal
air chamber provides outstanding rigidity.
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All port section welds
are continuous; structural welds have full penetration.
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Internal blade supports
limit the deflection of the blade as it enters the bottom seal.
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Internal supports
capable of resisting the upset duct pressure and a one "g"
seismic event.
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Flushable trough under
the bottom seal prevents deposit accumulations in the bottom seal
pocket.
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Open superstructure allows
ready access for maintenance and inspection.
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Bearing mounts take drive loads
into the frame through safe compessive load paths.
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A transverse beam cooperates
with the drive shaft to ensure seismic stability.
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Positive safety stops prevent
movement of the blade past the normal operating limits.