7700 and 7790 Spark Resistant Series hoist

7700 and 7790 Spark Resistant Series Continuous Heavy-Duty Applications 500 lbs (227 kg) - 3000 lbs (1364 kg) Lifting Capacity 7700 and 7790 Series Spark Resistant Hoists are designed for Division 1 applications where, un......7700 and 7790 Spark Resistant Series Continuous Heavy-Duty Applications 500 lbs (227 kg) - 3000 lbs (1364 kg) Lifting Capacity 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 500 lbs. (227 kg) and 3000 lbs. (1364 kg) - the 7700 and 7790 Spark Resistant Hoists are available with bronze top hook or trolley adapter suspension. View Model Specifications Catalog Section Product Safety Manual Drawings Technical Publications FeaturesSpark Resistant Features Stainless steel load chain and solid bronze hooks to prevent accidental sparking. Pendant control handles, when ordered, are covered with an industrial-grade vinyl grip. Pull chain controls come standard with zinc-plated pull chain. Hoist capacities are reduced and speed adjustments are locked into place to maximize chain life. Trolley models are supplied with bronze wheels. Division 1 & 2 Applications 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.