Breeze joints with cup joint fittings are typically used when?

Breeze joints with cup joint fittings are commonly used when maximum strength is required due to their design which promotes a strong mechanical connection. These fittings, often designed to accommodate the forces and stresses in various applications, utilize the geometry of the cup to create a larger surface area for the solder or braze material, thereby enhancing the bond between the two parts. This configuration is particularly advantageous in scenarios where the connection needs to withstand significant stress or where structural integrity is vital.

In contrast, other options are not applicable in the same way. Low temperatures do not directly relate to the choice of joint type, as breeze joints can function effectively across a range of thermal environments. The effectiveness of capillary action is generally inherent to the design of soldering and brazing processes, and it's advantageous in many contexts, so it wouldn't be a reason to use a breeze joint over another type. Lastly, compatibility of fittings is a separate concern related to material types and processes, rather than a primary driver for the choice of joint style, as a fitting’s compatibility does not intrinsically determine its strength.