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7700
and 7790 Series Spark Resistant Hoists are designed for Division 1
applications where, under normal operating conditions, the
atmosphere contains hazardous concentrations of flammable gases,
dust, or other materials.
Specifically
engineered for continuous heavy-duty industrial applications –
between 400 lbs and 1500 lbs – ARO 7700 Series Spark Resistant
Hoists are available with bronze top hook or trolley adapter
suspension.
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Division
1&2 Applications
The following
definitions may be used as a guide.
Division
1 (Spark-Resistant air hoists are required) Atmospheres
containing hazardous concentrations of flammable gases, dusts, or
fibers, continuously, frequently or periodically, under normal
operating conditions.
Division
2 (Standard air hoists are required) Atmospheres,
normally non-hazardous, in which a hazardous concentration of
flammable gases, dusts, or fibers, occurs when a container or
handling system fails, or the ventilating system which normally
keeps the concentration non-hazardous fails.
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Non-Spark Features |
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Non-spark
material
_ Stainless steel load chain
and solid bronze hooks to prevent accidental sparking
_ Trolley models are supplied with bronze
wheels.
_ Pendant control handles, when ordered, are covered with an industrial-grade
vinyl grip. Pull chain controls come standard with
zinc-plated pull chain.
-
Safe
_ hoist capacities are reduced and speed adjustments
are locked into place to maximize chain life.
-
Easy
Installation
_ Lightweight and convenient
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