System PartsPregunta 20 de 60
What is a one-way check valve used for in an air brake system?
a.To increase compressor speed
b.To keep air from flowing back out of the tanks if pressure drops
c.To warn the driver of a leak
d.To drain oil from the compressor
Explicación
A one-way check valve allows air to flow in one direction only, keeping air from flowing back out. It is typically placed between the air compressor and the first reservoir. This protects the stored air supply if the compressor or supply side develops a leak.
Practica las 60 preguntas gratis — sin registro.
Preguntas relacionadas de este tema
- Why should you NOT use the parking brakes if the brakes are very hot, such as after coming down a steep hill?
- What is the trailer hand valve (trolley valve) used for?
- Why should the trailer hand valve NOT be used for parking?
- On many air brake vehicles, what is the purpose of the safety relief valve on the first air tank?
- Some air brake systems use an alcohol evaporator. What is its purpose?
- How are the service brakes applied in an air brake vehicle?
Última revisión: · proceso editorial
Equipo Editorial de PrepPass · Verificado con CDL Air Brakes Knowledge Test · Cómo revisamos