We are doing scheduled site maintenance. The site may feel slow and unresponsive at times. We're sorry for the inconvience.
New, updated catalog with the
ability for existing customers to
place orders online.

IR & Haldex information

Trailers the Forgotten Ones - Quiz 3


Which valve was part of the first "121" law multi-valve/multi-tank system?

  1. Task valve

  2. RE valve

  3. Serv valve

  4. RT4 valve


The task valve system required a separate protected emergency tank

  1. True

  2. False


In the RT/RG system the RT valve is for service brakes and the RG valves are for parking

  1. True

  2. False


The two-way check valve incorporated in the RT4 valve allowed for the elimination of what?

  1. A separated protected tank

  2. Pressure protection valves

  3. Protected supply lines

  4. None of the above


In the RT/RG 2 tank - 3 valve system which component prevented automatic dynamiting of the parking brakes in case of a single tank failure?

  1. One-way check valve

  2. Two-way check valve

  3. Pressure protection valve

  4. Service brake relay valve

  5. None of the above


Where does the RT/RG system gets its supply of air to release the spring brakes?

  1. The trailer control line

  2. The trailer tank/trailer supply line

  3. The hand control valve

  4. The regulating valve


Forgot your password?
Don't have an account? Please register here!