NPFC - MIL-DTL-1183
FITTINGS, PIPE, CAST BRONZE, SILVER-BRAZING, GENERAL SPECIFICATION FOR
|Publication Date:||10 July 2017|
This specification covers pipe fittings of cast bronze with at least one end for silver-brazing into steam, air, oil, or water piping systems.
Fittings herein are intended for steam, air, oil, or water piping service aboard naval vessels, providing for silver-brazing installation, which civilian vessel fittings generally lack. Commercial... View More
Fittings herein are intended for steam, air, oil, or water piping service aboard naval vessels, providing for silver-brazing installation, which civilian vessel fittings generally lack. Commercial specifications for brazed fittings do not have a pre-inserted ring recess in the socket bore design. Type A fittings are intended for general service and specifically for seawater service. Fittings that are provided as Type B only (caps, reducing crosses, 45-degree reducing laterals, plugs, threaded reducers, long turn single sweep reducing tees, fittings with integral flanges and certain reducing tee sizes, bend sizes, and one lateral and one socket-to-socket reducer size) should be used for the same general services as Type A fittings but should not be used for seawater service. Caps and plugs that are provided as Type B should only be used for "no flow" seawater service. Type A or Type B fittings are used with MIL-T-16420 copper-nickel pipe, MIL-T-24107 copper pipe, or their equivalent commercial pipe standards, and ASTM B43 brass pipe. Type A or Type B fittings are attached to the pipe by the silver-brazing process without exceeding a temperature of 1,500 degrees Fahrenheit (°F). Existing stock of fittings manufactured to MIL-F-1183J dated 5 May 1987 are acceptable for use until depleted.View Less