Provent BaseVent - DWV Vent Base Fitting - 4″ X 3″

The ProVent Base Fitting has a pressure relief vent opening that extends up then makes a 180 degree turn downward using pipe and fittings that connect to the horizontal building drain at a point no less than 10 pipe diameters downstream from the center line of the vertical stack to the centerline of the branch wye. 

The pressure relief vent line may run parallel to the horizontal drain and must connect above the centerline of the drain. In situations when existing elevations require the soil or waste branches to be made flat with the main drain, a minimum distance of 40” is required between the centerline of the stack and the wye branch.

4″ X 3″ ProVent PVC Base Assembly de-aerator fitting, with nose baffle

• Decreases labor requirements
• Reduces project costs by up to 40%
• Speeds and simplifies installation
• Cuts pipe and fittings cost by almost 50%
• Reduces need for inserts, rods and hangers
• Simplifies engineering/design layouts