Johnson 142SL Special Length Gas Assay Furnace

Johnson's rugged, low cost heat treating furnaces have been in wide use in industrial tool rooms, tool and die shops, assay labs, dental labs and school shops, for over 80 years. These powerful, highly efficient furnaces are designed to meet the demands of industrial heat treating for speed, accuracy, efficiency and durability.

RUGGED CONSTRUCTION: Massively built of heavy gauge steel with special fire box reinforcement and cast iron doors, front sections and burner ports.

FULLY INSULATED: Highest quality insulating fire brick insures efficient, low-cost operation and comfortable working conditions. 

HIGH SPEED DESIGN: Blast type burners and Johnson's powerful blowers insure fast heat up and even temperatures. (1500°F. in 15 minutes; 2300°F. in 50 minutes). 

EASY, SAFE OPERATION: All Johnson Hi-Speed furnaces are equipped with Ultra Violet safety systems. They also feature push button spark ignition lighting and solid state air controllers that insure simple, accurate furnace adjustment and operation. 

OTHER FEATURES: Furnace door opens upward with ratchet arrangement allowing parts to be inserted or withdrawn without fully opening the door.