Gradelok™
With Gradelok™:
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With a life expectancy of, say 100 years or so, why not make certain your
fire hydrants are installed correctly the first time. How many times,
after installation, is a hydrant still either too high or too low??
Specifying Gradelok™ gives you the advantages of a restrained joint
and grade adjustment in a single fitting. You’ll provide enhanced
aesthetic appearance by having all fire hydrants set exactly to grade.
And by specifying Gradelok™ you’ll save money by eliminating
expensive extension kits and concrete thrust devices. Be sure to specify
Gradelok™, the system providing the very best hydrant installation
available.
Without Gradelok™:
Download detailed drawings
Gradelok™ Typ Fire Hydrant
MJ Gradelok™ Typ Fire Hydrant

Benefits of Having Gradelok™
- Reduced installation costs and taxpayer budget savings are an important
consideration, however… Public utility directors, politicians
and taxpayers should demand the specification of Gradelok™ for
the public safety benefits!
- Fire Department wrenches – approximately 15” long need
appropriate clearance from groundline to nozzle centerline of 18”
to spin the caps off quickly in an emergency.
- At properly-installed nozzle centerline of 18”, ONE fireman
can easily attach a suction hose by holding it between his knees while
threading the coupling. Hydrants installed too high or low require at
least TWO firefighters to hook up.
- The 18” distance is the most effective to enable a hydrant’s
traffic feature to break properly upon impact. If the traffic flange
is buried or set too high, chances of it breaking correctly upon impact
are greatly reduced.
- The traffic flange is always exposed, easily-inspected for damage
or leakage during routine maintenance.
- At a uniform installation height, firefighters can most-quickly identify
hydrant locations in an emergency.
- Gradelok™ is manufactured of 350 Ductile Iron, cement-lined
inside and tar-coated outside for corrosion protection, and conforms
to AWWA C153/ANSI A21.53/AWWA C104/ANSI A21.4
- Click here to view promotional video. 56k Dialup
- Click here to download video in ZIP format
to on your machine.
Assured Flow Sales, Inc. warrants that all of it's product are free of defects in material and workmanship. Assured Flow Sales, Inc. will replace at no charge any of it's new products found to be defective within one year of the date of purchase from Assured Flow Sales, Inc. Assured Flow Sales, Inc. shall not be liable for any loss, damage or injury, direct or consequential arising out of the use of or the inability to use the product. Before using any product the user of the product shall determine the suitability of the product for it's intended use and assumes all risk and liability. No claims for labor or consequential damage will be accepted.
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