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  Multi-Port
Switch
Series 676
Divert dusty,
granular or abrasive material up to fifteen positions without
cross-contamination or dusting
The Multi-Port Switch
automatically diverts granular materials from a single source,
such as a pneumatic conveying system, to as many as fifteen different
bins, hoppers, or silos as required. The full-bore design permits
unrestricted material flow to minimize material degradation and
pressure drop to make conveying easier, with less energy. Cohesive,
hard-to-handle, or fragile materials can be conveyed with better
results.
The unique design
allows the switch to be located in any position and be tolerant
of very fine non-abrasive, or coarse abrasive materials. Welds
are smooth, so there are no dead spots for material to collect,
making the Multi-Port Switch ideal for food products or other
applications where cross-contamination is a major concern.
Inflatable
air seals eliminate dust problems
 Primary components
of the Multi-Port Switch are the inflatable seals which provide
a sealing pressure of 100 PSIG. The seals are located at the
lower pivot point and at each outlet port connection.
When the swing tube
indexes to the desired port, both the top and bottom seals inflate,
squeezing the swing tube from both directions to form a dust-tight
pressure seal. The blind or unused ports are similarly sealed
when the swing tube is not moving, so hoppers and bins are not
exposed to the atmosphere.
To index the swing
tube to a new position, the seals are deflated, giving the swing
tube clearance to rotate freely 360° around the center support
shaft with minimal friction and effort. The heavy-duty center
shaft and bearing assembly supports the swing tube.
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