In the 1920s, two trade associations and one professional association joined forces to formulate uniform standards for fittings. The standards for fittings became popularly known as 3-A Standards. The 3-A Sanitary Standards provide material specifications, design criteria and other necessary information for equipment types to satisfy public health concerns.
Standards are available for many equipment types, from fittings to silo tanks.
A printed index is available from either the 3-A Secretary's office or IAFP, or click here for an online index. A practice covers a system, which is defined as a set of connected equipment and machinery that forms a whole or works together. In addition to the criteria for equipment, a practice may also provide specifications for sanitary installation and legal controls. The ultimate objective is to safeguard public health. The 3-A Sanitary Standards Committees meet annually in May to discuss and review current and proposed standards and accepted practices.