One discussion sweep 90 vs short radius 90.

EDIT

From the above discussion the sweep 90 is used for DW piping when significant waste water is involved and especially when solids are in the waste.

The short radius 90 is used for vents which are only conducting air.

One discussion sweep 90 vs short radius 90.

EDIT

From the above discussion the sweep 90 is used for DW piping when significant waste water is involved and especially when solids are in the waste. A specially important case is when liquid waste is transitioning from a vertical run to a long horizontal run so that the momentum of the bulk liquid is not absorbed by slamming into a short radius turn and generating turbulence. This speeds the flow through a low slope horizontal run and keeps solids suspended.

The short radius 90 is used for vents which are only conducting air.

One discussion sweep 90 vs short radius 90.

One discussion sweep 90 vs short radius 90.

EDIT

From the above discussion the sweep 90 is used for DW piping when significant waste water is involved and especially when solids are in the waste.

The short radius 90 is used for vents which are only conducting air.