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SAE ARP4266 1997 Edition, November 1, 1997
Hole Contour, Fluid Passage, Tube Fitting
Description / Abstract:
This document is intended to provide recommended contours and
limits of size of the surfaces of the internal fluid passages of
tube fittings for the portions that are not already defined by the
fitting end design standard drawings.
Purpose:
The internal passages of fittings are defined by the dimensions of the fitting end design standards, a through hole diameter that may be smaller than that on the fitting ends, an allowable mismatch of holes on the same axis, a minimum wall thickness of the center body section of shape fitting and a requirement for a minimum ball to pass through shape fittings. This document provides manufacturing recommendations to reduce abrupt changes in contours and thus minimize pressure drop, reduce the number of edges produced to minimize burrs and provide sufficient minimum size of fluid passages while maintaining a minimum wall thickness of the center body section, which is defined herein. The historical background of the need for this document is given in 4.1.
Purpose:
The internal passages of fittings are defined by the dimensions of the fitting end design standards, a through hole diameter that may be smaller than that on the fitting ends, an allowable mismatch of holes on the same axis, a minimum wall thickness of the center body section of shape fitting and a requirement for a minimum ball to pass through shape fittings. This document provides manufacturing recommendations to reduce abrupt changes in contours and thus minimize pressure drop, reduce the number of edges produced to minimize burrs and provide sufficient minimum size of fluid passages while maintaining a minimum wall thickness of the center body section, which is defined herein. The historical background of the need for this document is given in 4.1.
SAE ARP4266 1997 Edition, November 1, 1997
Hole Contour, Fluid Passage, Tube Fitting