The ProVent Single Stack DWV Systems are for three stories and above multi-story apartment / hotel type DWV plumbing systems. The product helps reduce both labor and material costs by 30-40 percent, and is fast and easy to install.  The system works as well or better than any conventional 2 or 3 pipe DWV methods.  It also offers free single stack riser drawings for contractors to compare the savings of the skilled plumber’s installation time.

ProVent System

www.proventsystems.com