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Duct Rodders - Fish Tapes
Home > Duct Rodders
Duct Rodders: The Duct Rod
The rod is manufactured from state of the art materials formulated to offer the high performance and durability demanded by our customers.
The core of the rod is manufactured by the Pultrusion process. This involves impregnating high strength continuous glass fiber filaments with a liquefied resin. The fibers are drawn into a heated die where the resin matrix is cured, bonding the fibers together and allowing mechanical load to be transmitted through the matrix and distributed amongst the fibers.
The resulting pultruded rod combines both the high stiffness required
to push the rod through long distances of ducting, with the flexibility
to handle tight bends without damage. This inner core is then coated
with a highly durable, scratch resistant Polypropylene sheath which
protects the core from mechanical damage.
The Frames
The Frames are also a feature of the DCD systems. The four largest
sizes incorporate the new EZ-Tip™ feature; a larger footprint
for stability; steel brake handles that will last forever; dual rod
out-feeding positions and wheels inside the frame width. The two smallest
sizes feature new frames with the feedout built into the handle. All
frames can be laid down on either side. These are just some of the
new design features that will make every unit more usable and friendly
for the end user.
Duct Rods - Selection
Which is the right rod diameter for any given application? The rod
selection is usually governed by several factors including:
· The size of ducting it is to be pushed through
· The distance the rod is to be pushed
· The number and tightness of bends in the ducting
· If the ducting is already occupied by cable
When being pushed through the duct, any rod will tend to form “sine
waves”, hitting the wall of the duct at certain intervals. Each
time the rod comes in contact with the wall of the duct, it causes
friction. The friction will build and eventually prevent the rod from
being pushed any further. Small rod in large duct will make more frequent
contact with the ducting; the same rod in smaller duct will make less
frequent contact and therefore less friction so it can be pushed further.
Large rod in small ducting is a good situation, but reduced flexibility
of the rod may cause increased friction in the tighter bends.
NOTE: These Duct Rodders are custom Built
to order and are non-returnable except for warranty. Exercise caution
when ordering.
Extreme care should be taken when unpackaging replacement rod because the fiberglass
rod stores considerable energy and may cause severe injury.
What are Fish Tapes?
A Fish Tape, also known as a draw wire or draw tape, is a tool used
by electricians to route new wiring through walls and electrical conduit.
Made of a narrow band of spring steel, by careful manipulation, the
tape can be "fished" (guided) through the confined spaces within wall
cava ties. Once guided through, the new wiring can be pulled into the
wall by attaching it to teh end of the fish tape and pulling the tape
back whence it came.