Choose this. PVC DWV 45-Degrees Hub x Hub x Hub Wye for your PVC sanitary system. This wye reliably joins a branch line and a horizontal drain line. Prime and then solvent weld the hub connections. PVC DWV is easy to install and is joined by solvent cementing or threading. PVC fittings exhibit high corrosion and chemical resistance and will not rust, scale, pit or corrode.