GENERAL PNEUMATICS AIR DRYER HT50
 
The General Pneumatics Air Dryer HT50 is likely a 50 cubic feet per minute (CFM), high-temperature refrigerated air dryer. These types of dryers are designed to work with piston or reciprocating air compressors that do not have an aftercooler, and therefore produce very hot compressed air. 
 
Key features
High-temperature design: The HT50 model is specifically built to handle high inlet air temperatures, typically up to 180°F to 210°F, allowing it to be placed directly after a reciprocating air compressor.
Refrigerated drying technology: It uses a refrigeration system to cool the compressed air, causing water vapor to condense into liquid. An automatic drain then removes the condensed moisture from the system.
50 CFM capacity: The model name and similar products from other brands indicate a flow capacity of 50 cubic feet per minute, making it suitable for many small to medium-sized compressed air systems.
Integrated aftercooler: The design likely integrates an air-cooled aftercooler to reduce the temperature of the compressed air and a moisture separator to efficiently remove the resulting condensate.
Microprocessor controller: Some comparable models feature a microprocessor to monitor and display operational information, such as the dew point, and to alert the user to potential failure conditions. 
 
Model Number: HT50