What Is a Foot Brake Valve

Aug 05,2022

Unlike a conventional air-powered footbrake, the Foot Brake Valve is self-balancing, meaning that if one part of the system fails, it doesn't affect the other. The foot valve operates the primary and secondary sub systems simultaneously, so failure in one part does not affect the other. It operates as a self-balancing valve, which means that it will open to top up the air pressure in the system.

Air
The Air Foot Brake Valve, also known as the service brake control valve, is an integral part of a car's braking system. When a driver applies the brakes, the pressure on the foot brake pedal engages a piston that moves upward and contacts an exhaust valve. This action closes the foot brake valve. There are three types of foot brake valves: Type E, Type F, and Type G.

Air is then applied through a two-way check valve on the air pedal to separate the brake lines. The pressure is proportional to the movement of the valve. Some brake pedals are floor-mounted, while others are suspended on a horizontal firewall. The Air Foot Brake Valve is often controlled by a pushrod on the brake pedal, while many floor-mounted units are operated by a roller and plunger.

Rubber spring
To replace a broken or worn foot brake valve, you must first identify the exact part and its location. You can identify the spring by its size and the brand name, or you can refer to the product identification number or the model number. Some companies also refer to the exact part by the OEM name. Regardless, it is always recommended to contact the manufacturer to purchase the right foot brake valve part. In any case, you should choose the replacement component that is made of high quality materials and is designed to last for a long time.

A foot brake valve is used in vehicles that use air to actuate the brakes of all wheels while the vehicle is in motion. This component, also known as a service brake control valve, is positioned at the front of the vehicle. As the vehicle travels, the pressure generated by the foot brake pedal is transmitted to the piston, which contacts the exhaust valve. The foot brake valve is closed when the exhaust valve is closed. Type E foot brake valves come in three different types: A, B, and E.

Rubber retainer
The foot brake valve is a mechanical device used to actuate the brakes on all four wheels of a vehicle when it is in motion. There are three types: the Type E, the Type F, and the Type E-A. When in use, the foot brake pedal exerts pressure on a piston that contacts an exhaust valve. The exhaust valve closes, and the foot brake valve releases air under pressure to stop the vehicle.

Self-balancing piston
A self-balancing piston for a foot brake valve includes a main body and a small extension at each end. The small extension has a head that is smaller than the main body, which develops a force proportional to the area of the head. The larger extension reduces the pressure by expanding the volume of output fluid. The smaller piston's output pressure is delivered to the brake assembly. A self-balancing piston can be used in brake systems of all types, and it is a good choice for high-pressure applications.

In addition to being self-balancing, the foot brake valve may also include a slave piston. This piston is attached to a foot mounted on a swivel. The swivel foot bears against the engine part. As a result, the load on the master piston drive train is significantly less than that on the slave piston. Therefore, the system is designed to reduce the load on the master piston.

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