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

In a dual air brake system, what is the function of the 'one-way check valve' installed on the reservoirs?

To let water drain out automatically To prevent air from flowing backward from the dry tanks to the wet tank if the compressor or supply line fails To speed up the release of the spring brakes To limit the pressure in the primary tank to 50 psi

Correct Answer:

To prevent air from flowing backward from the dry tanks to the wet tank if the compressor or supply line fails

Access more questions from this quiz

Continue to SGI Class 1 Practice Questions - Saskatchewan Class 1 Commercial Driver Licence Written Exam for more practice questions and the full quiz experience.

Access More Questions