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The Royal Building Products 35-1500 is a 4-inch PVC SDR35 gasket wye fitting designed for gravity-flow sewer and drain piping systems. The wye configuration allows a branch line to enter the main run at an angle, directing flow smoothly and reducing turbulence within the pipe. Built to SDR35 dimensional standards, this fitting is intended for below-grade sewer applications where soil loading and flow performance are primary concerns. Licensed plumbers and drain contractors install this fitting during rough-in on residential and light commercial sewer laterals.
This fitting is used in underground gravity sewer systems, storm drain installations, and sanitary drain laterals. The gasket joint design allows for quick field assembly without solvent cement on the bell end, using a factory-installed elastomeric gasket to create a watertight, root-resistant seal. It is suited for new construction and repair work where SDR35 PVC pipe is already in use on the project.
Designed as an OEM-style replacement and new-installation fitting for 4-inch SDR35 PVC gravity sewer piping systems.
Installation is performed by licensed plumbers in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off flow and isolate the line section before cutting into an existing sewer run. Ensure the pipe ends are clean, deburred, and lubricated with approved gasket lubricant before seating the joint. Do not use solvent cement on gasket-joint connections.
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