THREADLESS COUPLERS

A REAL IMPROVEMENT IN COUPLING GROUND RODS
The Industry is rapidly moving to 
DeMARK "threadless" couplers 
to splice groundrods in applications requiring more than 8' of depth. The old "threaded" and "exothermic" concepts do not provide the best connections and economics that are found in the DeMARK products.

Product Comparisons                                      Coupler Models
 

DeMARK COUPLERS
are high strength specially designed units that will work with copper,
galvanized or stainless steel ground rods from .44" through 1.00" diameters.

To use the coupler only requires slipping it over the end of a ground rod after the rod has been
driven into the ground; and then inserting the additional rod in the other end. The impact force of
driving the second rod will force fit the two rods securely into the coupler providing an excellent
connection.
 

vs. the competition

Comparison DeMARK COUPLERS THREADED COUPLING EXOTHERMIC COUPLING
TIME SAVINGS Very Efficient Less Efficient Least Efficient
MATERIAL COSTS Low Cost About the Same Substantially More Costly
CONDUCTIVITY 100% Much Less 100%
STRENGTH Great Characteristics Less Much Less
SPECIAL ROD Not Required Required Not Required
SPECIAL TOOLS Not Required Not Required Required
WEATHER A FACTOR IN INSTALLATION Not a Factor Not a Factor A Major Factor

For more information, send us e-mail at ground@demrk.com
Call us at (419) 337-5866
Fax: (419) 337-5089

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