When looking to buy Air Brake Valve for your car, it is a good idea to get in touch with different suppliers and manufacturers for more information. You can also look for a specific type of valve, such as the Tractor protection valve or the Dual control foot valve. These types of valves are available in different sizes and types, and you can also find these at wholesalers.
Tractor protection valve

A tractor protection valve is a safety feature that prevents air loss from the trailer and glandhands. These valves are usually red in color and have an eight-sided knob. When the air pressure is between twenty and forty pounds per square inch, the tractor protection valve should open automatically and apply the brakes. If the valve closes, the air supply will shut off.

Tractor protection valve suppliers offer a variety of options. One popular option is the air brake valve, which controls the flow of air to the brake system. These components are extremely compact and represent the highest standards in safety, performance and engineering. They meet all federal safety regulations and are widely used by OE manufacturers.
Dual control foot valve

Dual control foot valve suppliers provide different valve types and styles for a range of applications. Depending on the type and purpose, foot valves can be mechanically operated or hydraulically operated. The primary circuit portion of a dual valve is controlled by a plunger or treadle, while the secondary section is similar to a relay valve. The two circuits start at a point in the foot valve where air is released from a primary circuit to a secondary circuit. Dual foot valves are floor-mounted and feature two separate supply and delivery circuits.
Service brake relay valve

Air brake relay valves are used in brake systems to provide air pressure to the rear wheels of a vehicle. These devices are placed near the rear service brake chambers and are often found on long wheelbase vehicles. The relay valve controls air pressure and delivers it to the brakes, correcting brake lag. The pressure that passes through the valve is determined by the load of the vehicle, the size of the brakes, and the linings on the brakes.

To identify which valves you need, you can look up the part number stamped on the valve body. Most OEM valves will also have a metal washer underneath the screw head that lists the crack pressure.
Diaphragm

Diaphragm air brake valve suppliers supply the braking system with a flexible diaphragm to control air pressure in the cylinder. Unlike a traditional brake cylinder, the diaphragm is flexible, meaning that its volume can be varied based on the system's requirements. There are a variety of diaphragm air brake valve suppliers to choose from.

The springs in diaphragm air brake valves are adjustable so that excessive loads aren't placed on the stems. The diaphragm area is usually from 160 to 2900 cm2, and the thrust can range from under 2 kN to over 125 kN.
Service port

Air brake valve suppliers offer a variety of options. For example, they may offer four-port service relay valves that replace the Haldex Full Function part. These valves come preassembled and with thread sealant already applied. They may also offer alternative bracket versions for remote mounting. All of their products are guaranteed for performance and durability.

These suppliers also offer directional flow control valves, fine solenoid valves, and pressure control valves. These valves can be ordered in almost any size and are available with one-year warranty. They serve a variety of industries including power, chemical, and industrial gas.