SGI Class 1 Practice Questions - Saskatchewan Class 1 Commercial Driver Licence Written Exam

What is the function of the 'inversion valve' in an air brake system?

To flip the air lines upside down To apply the trailer parking brakes using air from the secondary system if the primary tank loses pressure To reverse the direction of the air compressor engine To heat the cab using warm air from the brake chambers

Correct Answer:

To apply the trailer parking brakes using air from the secondary system if the primary tank loses pressure

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