This SAE Standard covers the minimum requirements for metric sizes of nonmetallic tubing as manufactured for use in air brake systems. Nonreinforced products are designated type A and reinforced products type B. It is not intended to cover tubing for any portion of the system that operates below −40 °C (−40 °F), above +93 °C (+200 °F), above a maximum working gage pressure of 1.0 MPa (150 psi), or in an area subject to attack by battery acid. This tubing is intended for use in the brake system for connections that maintain a basically fixed relationship between components during vehicle operation. Coiled tube assemblies required for those installations where flexing occurs are covered by this standard and SAE J1131 to the extent of setting minimum requirements on the essentially straight tube and tube fitting connections, which are used in the construction of such assemblies.(Footnote 2)

NOTE - As all elements of SAE J1394 are being merged into SAE J844, two separate documents are no longer required; therefore, SAE J1394 will be cancelled in July, 2005.

Footnote 2 - Federal regulations covering designed requirements and accepted applications for coiled tube assemblies are set forth in 49CFR393.45.

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