Collection: Dennis Eagle Truck Parts (60)

The purpose of the limiting valve is to reduce the air pressure supplied to the front brakes during moderate brake applications. Because there is usually more loads on the rear wheels of a truck compared to the front wheels, the front wheels have more tendency to lock up during a brake application, the limiting valve reduces this tendency These valves are also used to reduce the supply pressure to other auxiliary Equipment.

The purpose of the limiting valve is to reduce the air pressure supplied to the front brakes during moderate brake applications. Because there is usually more loads on the rear wheels of a truck compared to the front wheels, the front wheels have more tendency to lock up during a brake application, the limiting valve reduces this tendency These valves are also used to reduce the supply pressure to other auxiliary Equipment.

The function of a quick-release valve is to rapidly exhaust air from the controlled device. It is normally located adjacent to the controlled device, rather than requiring exhaust air to return and exhaust through the control valve. This decreases release time. A check valve is a device that only allows the flow of air in one direction and are commonly referred to as non return valves or one way valves.

The function of a quick-release valve is to rapidly exhaust air from the controlled device. It is normally located adjacent to the controlled device, rather than requiring exhaust air to return and exhaust through the control valve. This decreases release time. A check valve is a device that only allows the flow of air in one direction and are commonly referred to as non return valves or one way valves.

The function of a quick-release valve is to rapidly exhaust air from the controlled device. It is normally located adjacent to the controlled device, rather than requiring exhaust air to return and exhaust through the control valve. This decreases release time. A check valve is a device that only allows the flow of air in one direction and are commonly referred to as non return valves or one way valves.

The function of a quick-release valve is to rapidly exhaust air from the controlled device. It is normally located adjacent to the controlled device, rather than requiring exhaust air to return and exhaust through the control valve. This decreases release time. A check valve is a device that only allows the flow of air in one direction and are commonly referred to as non return valves or one way valves.

On some trucks & trailers, the distance from the brake chambers to the foot valve is too far to cause immediate application of the brake when the foot valve is depressed. This is called brake lag. To correct this situation, a relay valve is installed near the rear brake chambers. A large diameter pipe is connected between the service reservoir and relay valve. The air line from the foot valve to the relay valve now becomes a control line that signals to the relay valve the amount of air to be drawn from the service reservoir for faster application of the brakes.

On some trucks & trailers, the distance from the brake chambers to the foot valve is too far to cause immediate application of the brake when the foot valve is depressed. This is called brake lag. To correct this situation, a relay valve is installed near the rear brake chambers. A large diameter pipe is connected between the service reservoir and relay valve. The air line from the foot valve to the relay valve now becomes a control line that signals to the relay valve the amount of air to be drawn from the service reservoir for faster application of the brakes.

On some trucks & trailers, the distance from the brake chambers to the foot valve is too far to cause immediate application of the brake when the foot valve is depressed. This is called brake lag. To correct this situation, a relay valve is installed near the rear brake chambers. A large diameter pipe is connected between the service reservoir and relay valve. The air line from the foot valve to the relay valve now becomes a control line that signals to the relay valve the amount of air to be drawn from the service reservoir for faster application of the brakes.

On some trucks & trailers, the distance from the brake chambers to the foot valve is too far to cause immediate application of the brake when the foot valve is depressed. This is called brake lag. To correct this situation, a relay valve is installed near the rear brake chambers. A large diameter pipe is connected between the service reservoir and relay valve. The air line from the foot valve to the relay valve now becomes a control line that signals to the relay valve the amount of air to be drawn from the service reservoir for faster application of the brakes.

The function of a quick-release valve is to rapidly exhaust air from the controlled device. It is normally located adjacent to the controlled device, rather than requiring exhaust air to return and exhaust through the control valve. This decreases release time. A check valve is a device that only allows the flow of air in one direction and are commonly referred to as non return valves or one way valves.

Brake Discs, also known as Rotors, are the rotating part of a wheel's disc brake assembly. The material is typically cast iron & the designs are varied, some are solid, others are ventilated (hollowed out) with fins or vanes joining together the disc's two contact surfaces. Ventilated discs helps to dissipate heat & commonly used on more heavily loaded front axles. A brake caliper squeezes the brake pads against the disc to create friction. The friction created slows the rotation of a wheel reducing its rotational speed and bring to a stop.