Air brake chambers come in different types, primarily categorized by the number of diaphragms they contain and their applications. The two main types of air brake chambers are single-diaphragm chambers and double-diaphragm chambers. Here's an overview of each type:

Single-Diaphragm Chambers:

Type 12: This is a single-diaphragm chamber commonly used on small to medium-sized trucks and trailers. It is suitable for applications that require moderate braking force.

Type 16: Type 16 single-diaphragm chambers are used on larger commercial vehicles and trailers, providing greater braking force than Type 12 chambers. They are often found on heavy-duty trucks and buses.

Type 20: Type 20 chambers are single-diaphragm chambers designed for heavy-duty and industrial applications. They provide even more braking force than Type 16 chambers and are used in demanding situations.

Single-diaphragm chambers are simpler in design and are suitable for applications that do not require extremely high braking force. They are often used in combination with other chambers in dual air brake systems.

Double-Diaphragm Chambers:

Type 24: Double-diaphragm chambers like the Type 24 are used in heavy-duty applications, including large trucks, buses, and industrial machinery. They offer increased braking force compared to single-diaphragm chambers.

Type 30/30: The Type 30/30 chamber is a popular double-diaphragm chamber used in tandem axle brake systems, particularly on heavy-duty trucks and trailers. It provides even higher braking force and is well-suited for larger vehicles.

Type 30/36: This type of double-diaphragm chamber combines a Type 30 on one side and a Type 36 on the other. It is used in dual brake systems for added flexibility and control over braking force distribution.

Double-diaphragm chambers are more powerful and are commonly used in combination with other chambers in dual air brake systems to provide the necessary braking force for larger and heavier vehicles.

In addition to these primary types, there are also variations and specialty chambers designed for specific applications and industries. The choice of air brake chamber type depends on factors such as the size and weight of the vehicle or machinery, the required braking force, and the specific application and regulatory requirements. Proper selection and maintenance of air brake chambers are essential for ensuring the safety and reliability of the braking system.