

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The MUELLER STREAMLINE PDWVY4 is a PVC DWV 45-degree wye fitting used in drain, waste, and vent piping systems. It connects three 4-inch hub-end pipes at a 45-degree angle, allowing branch lines to enter the main drain run with reduced turbulence compared to a sharp tee. This fitting is manufactured from PVC, which resists corrosion and chemical attack common in drain and waste applications. Licensed plumbers install this fitting during rough-in and repair work in residential and light commercial drain systems. Its hub-by-hub-by-hub configuration accepts solvent-welded pipe ends on all three ports.
This fitting is used in residential and light commercial DWV piping where a branch drain line must connect to a 4-inch main at a 45-degree offset. Typical applications include toilet drain branch connections, main stack fittings, and horizontal-to-horizontal drain transitions. The 4 x 4 x 4 inch sizing makes it a common choice for water closet connections and main building drain runs. All three ports accept 4-inch schedule 40 or schedule 30 PVC DWV pipe solvent-welded per standard installation practice.
Designed as an OEM-style replacement and standard fitment for 4-inch PVC DWV drain, waste, and vent piping systems in residential and light commercial construction.
Installation is performed by a licensed plumber in accordance with the International Plumbing Code or locally adopted plumbing codes. Shut off the water supply and ensure the drain line is empty before cutting into an existing system. Clean and prime all hub ends before applying PVC solvent cement to achieve a fully fused joint. Allow the solvent weld to cure per the cement manufacturer's specified set time before restoring flow to the line.
Thanks for subscribing!
This email has been registered!