By 803056
Date 06-06-2012 16:51
Edited 06-07-2012 16:23
The filler metal is distributed by capillary action. The direction of flow is in the direction the braze filler metal is "sucked" into the joint.
If the axis of a pipe and coupling assembly is vertical, the flow of the lower joint is vertical upward, while the flow in the upper joint is vertical downward.
Al