Browse Standards J1861_201606
Current STABILIZED 2016-06-17

Air Brake Valve Input-Output Characteristic Requirements(STABILIZED Jun 2016) J1861_201606

This SAE Recommended Practice establishes minimum tolerance requirements for pilot operated and mechanically actuated modulating type valves, and through type valves used in the service brake control system when tested in accordance with the test procedure outlined in SAE J1859. This document applies to the nominal input-output characteristics as specified by vehicle original equipment manufacturer and labeled by the valve manufacturer as outlined in SAE J1860. The tolerance requirements will include:
  1. a
    Crack (opening) pressure or force. Crack pressure may be measured at the initial output pressure or as the pressure differential before output pressure exceeds 14 kPa (2 psi). Crack force may be measured at initial output pressure or before output pressure exceeds 14 kPa (2 psi).
  2. b
    Pressure differential (input-output)
J1861_201606
2016-06-17
Latest
Stabilized
J1861_201109
2011-09-12
Historical
Reaffirmed
J1861_200701
2007-01-19
Historical
Revised
J1861_200109
2001-09-13
Historical
Reaffirmed

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