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The MUELLER STREAMLINE 5907 is a PVC DWV flush bushing designed to reduce a 3-inch spigot connection down to a 1-1/2-inch hub in drain, waste, and vent piping systems. Built from rigid PVC material conforming to ASTM D2665, F1498, D331, and D1784 standards, this bushing delivers consistent dimensional accuracy for a reliable, leak-free fit. The smooth interior wall reduces friction and scaling, maintaining free flow through the fitting. Licensed plumbers and pipefitters install this type of bushing during new construction and renovation work where pipe diameter transitions are required in DWV assemblies.
This flush bushing is suited for residential and commercial DWV applications where chemical resistance and corrosion resistance are priorities. The spigot-by-hub end connection allows it to be inserted directly into a standard hub fitting on one side while accepting a hub fitting on the other. It meets NSF 14 and UPC certification requirements, making it appropriate for use in code-compliant plumbing installations. Consistent manufacturing tolerances ensure proper fit with standard PVC DWV pipe and fittings of the same nominal sizes.
Designed as an OEM-style replacement and new-construction fitting for standard 3-inch by 1-1/2-inch PVC DWV piping systems used in drain, waste, vent, chemical, and corrosion-resistant applications.
Installation is performed by a licensed plumber in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off water supply and ensure the system is depressurized and drained before beginning work. Clean and deburr pipe ends, and use the appropriate PVC primer and solvent cement rated for DWV applications when making solvent-weld connections. Do not apply excessive force when seating the spigot end into an existing hub, as this may crack the fitting or damage the mating component.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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