Sustain ideal pressure and flow in your pipelines with help from this elbow, 90 degrees , vent by Mueller Industries. This elbow, 90 degrees , vent has a maximum temperature of 140 degrees F. This fitting falls into the elbows sub-category and into fittings schedule DWV. It fits a pipe size of 3". It comes in white. Standards include: Cell Class 12454, ASTM D1784.