Water Leak Detection Products & Services

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Continuous Duct Rodders & Locatable Duct Rodders

(Don't Forget to order Sondes or Tapes)

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.

Used to pull or push tapes, cables or sondes through ducts, tubes or conduits, our Continuous Duct Rodders are available in three nominal sizes, 1/4 in. (6 mm), 3/8 in. (10 mm) and 1/2 in. (13 mm).

Each unit comes equipped with a male threaded fitting and tapered head on the outboard end and a female threaded fitting on the back end of the Duct Rodder.

The Frames are also a feature of the rodder 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.

Rod Selection

Which is the right rod diameter for any given application?  The rod selection is usually governed by several factors including:

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.

Key Benefits


Strength of
Typical Strength
of Glued
Radius of
Typical Max.
Max. Recommended Length
of Push or 
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




  1. These Duct Rodders are custom Built to order and are non-returnable except for warranty.  Exercise caution when ordering.
  2. Extreme care should be taken when unpacking replacement rod because the fiberglass rod stores considerable energy and may cause severe injury.

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Edenbros, LLC
PO Box 247
St. James, MO  65559

(800) 526-5246 Toll Free
(800) 807-9368 Fax