Different Kinds of Brake Valve

Various kinds of brake valves are used in different vehicles. A brake proportioning valve is a safety device that helps prevent rear wheels from locking up before the front wheels. Proportioning valves are also called brake pressure regulating valves. These valves are designed to apply equal pressure to both the front and rear brakes of a vehicle up to a specified pressure level. This valve helps prevent rear wheels from locking up before the front wheels, which can be dangerous.

Proportioning valves can be used in a vehicle with front disc brakes to prevent lockup of the rear wheels, or they can be used with rear disc brakes to control pressure to the rear brakes in heavy braking loads. Proportioning valves are typically located near the steering column, and they provide a combination of control and modulation. These devices are relatively inexpensive and compact. They are also used in production-based race cars.

The brake proportioning valve consists of a piston and a valve attached to the piston. The piston is positioned at the bottom of the bore, and the valve is in a position ready to cycle to an emergency mode for quick brake application. The valve is designed to balance the pressure drop in the spring brake chamber of the brake actuator, which allows the spring to expand when the system is failing and the brakes need to be applied quickly. The valve is also designed to vent the air from the rear chamber of the brake actuator when the vehicle is being parked. This reduces the pressure that builds up in the spring brake chamber during normal vehicle operation.

The proportioning valve is a part of the Combination Valve. The valve is also used in electronic brake proportioning systems. This system uses wheel speed sensors to monitor the speed of the vehicle's wheels and apply pressure to the brakes accordingly. These systems can also be used in other fluid-actuated brake systems.

A dual brake valve is one of the most important components of a brake system. It controls air flow from the reservoir to the brake chamber. It is used in many heavy-duty trucks and buses. It is also used on trailers and rear axles of long-wheeled tractors. Relay valves are used on these brake systems to minimize delays due to the length of the plumbing.

A double check valve has two inlets and one outlet. The inlets are connected to the service reservoirs on the front and rear axles. The delivery port of the double check valve is connected to the emergency brake system and the parking brake system. During normal vehicle operation, the air pressure in the service reservoir moves the pistons and biases the seats. The force of the piston is determined by the air pressure, in psi, and the area of the diaphragm in square inches. When a brake pedal is depressed, the air pressure from the service reservoir pushes the pistons and the seats.