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Duct Rodders

Above
1/8" dia. Fish Rod
3/16"dia. Duct Rodder
1/4" dia. Duct Rodder
5/16" dia Duct Rodder
3/8" dia. Duct Rodder
7/16" dia. Duct Rodder
1/2" dia. Duct Rodder
Detectable Duct Rod
Duct Rodder Accessories
Hand Rodder
                                   

Quality,
by Design

DCD now offers the most comprehensive range of Duct Rodders available anywhere in the world.  From the smallest 1/8” diameter Fish Tapes to the rugged 1/2” Duct Rodders.

The 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.

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Rod 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.

The chart below is a rough guide as to rod diameter selection, but the above factors should all be taken into consideration before making the final selection.

Rod 
Diameter

 Tensile
Strength of
Rod		 Typical Strength
of Glued
Connection		 Minimum
Radius of
Curvature		 Typical Max.
Duct
Diameter		 Max. Recommended Length
of Push or 
Pull
1/8" 1,125 lb 140 lb 2" 1 1/4" 150 ft 
3/16" 2,200 lb 350 lb 4" 2" 300 ft
1/4' 4,070 lb 800 lb 7"  2 1/2" 400 ft
5/16" 7,700 lb 850 lb 10" 3" 600 ft
3/8" 8,580 lb 1,150 lb 12"  4" 800 ft 
7/16" 11,000  lb 1,750 lb 16" 8" 1,200 ft
1/2" 13,000 lb 1,900 lb 18" 10" 1,000 ft

*Please refer to the attached pages for further information on DCD's line of Duct Rodders

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.

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Send mail to sales@dcddesign.com with questions or comments about anything DCD related. We want to hear from you!