www.phcppros.com/articles/8331-provent-single-stack-dwv-systems
ProVent Single Stack DWV Systems
October 18, 2018
ProVent Single Stack DWV Systems provides greater value at lower cost for three stories and above multistory apartment / hotel type DWV plumbing systems. Both labor and material costs are reduced by 30-40 percent and is faster and easier to install. The system works as well or better than any conventional two- or three-pipe DWV methods. ProVent offers free single stack riser drawings for contractors to compare the savings of the skilled plumber’s installation time.
ProVent Systems