DCD Design & Manufacturing - 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.