DIAPHRAGM MEI Part No Description Application 122220 Diaphragm Curved Wall/Regular Type 16 Brake Chambers 122310 Diaphragm Curved Wall/Regular Type 20 Brake Chambers 122311 Diaphragm Deep Wall Type 20 Brake Chambers 122330 Diaphragm Curved Wall/Regular Type 24 Brake Chambers 122331 Diaphragm Deep Wall Various Spring Brake actuators-25/75 Quick reference Product Catalogue Dealers Location Contact us