Hindusthan Electric House offers Diesel De-Contamination Units with 1 ½ Inches or 2 Inches Diameter Fuel Lines. Hindusthan Electric House supplies Free Air Pre-Cleaners, LEDs as well as Diesel Decontamination Units. Diesel De-Contamination Units with 1 ½ Inches or 2 Inches Diameter Fuel Lines has been made to connect into a fuel line with limited flexibility.