What is the trailer brake control valve?

Pneumatic trailer control valves control the braking system of the towed vehicle. The various braking circuits in the tractor vehicle control the valve which applies proportional pressure to the coupling heads. …

When should you use the trailer brake hand valve?

6.2. The trailer hand valve should be used only to test the trailer brakes. Do not use it in driving because of the danger of making the trailer skid. The foot brake sends air to all of the brakes on the vehicle (including the trailer[s]).

How can you test the air flows to all trailers?

Check That Air Flows to All Trailers. Use the tractor parking brake and/or chock the wheels to hold the vehicle. Wait for air pressure to reach normal, then push in the red “trailer air supply” knob. This will supply air to the emergency (supply) lines.

What is the blue glad hand for?

Service gladhands are blue in color and used to connect service air lines (also called control lines or signal lines) that carry air to foot brakes or trailer hand brakes.

What should you hook up before backing under the trailer?

After connecting the air lines but before backing under the trailer you should: A Supply air to the trailer system, then pull out the air supply knob.

What does a hand control valve do?

The purpose of the hand valves is to allow more or less inlet steam nozzles to be used during operation. Optimizing the steam nozzles used, maintains turbine efficiency during load changes.

What is the function of hand control valve hand brake?

Active braking control is possible based on a precise air pressure regulation in a dual-circuit brake system. By gradually releasing the air from the connected Tristop™ or spring brake actuators the hand brake valve enables a controlled deceleration of the vehicle.

How do I know if my brake controller is working?

For that you can use a circuit tester like the part # PTW2993 with one pin grounded and the other on the output pin. Then you can hit the brake pedal of the vehicle and you should see the brake controller operate like normal.

What is the purpose of the trailer control valve?

Wabco’s trailer control valve is engineered to control the vehicle’s trailer braking with a tractor-trailer combination. The major functions of this valve include:

What are the features of a trailer spring brake valve?

Our trailer spring brake valves offer pressure protection and anti-compounding features that help keep the spring brakes operating safely and prevent damage to wheel ends. SR-5: Allows for fast release of the spring brakes, which gets a vehicle rolling quickly via its integrated reservoir relay function.

What happens if the trailer supply valve is closed?

The tractor protection valve will not operate if the trailer-supply valve is closed. It serves as a link between the tractor and the trailer parking-brake systems by supplying air to the trailer reservoirs, through the supply line.

What is the function of the Wabco trailer control valve?

Wabco’s trailer control valve is engineered to control the vehicle’s trailer braking with a tractor-trailer combination. The major functions of this valve include: Fill the quantity to get latest price! Wabco’s trailer control valve is engineered to control the vehicle’s trailer braking with a tractor-trailer combination.