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The MUELLER STREAMLINE 5987 is a 4-inch PVC DWV street elbow with a 22.5-degree angle, configured with a spigot x hub end connection. This fitting is designed for drain, waste, and vent piping systems where directional changes of 22.5 degrees are required. Manufactured from PVC to ASTM D2665, F1498, D331, and D1784 material specifications, it meets NSF 14 and UPC standards. The smooth interior bore reduces friction and resists scaling, while the rigid PVC body holds up to chemical exposure and corrosion. Licensed plumbers and pipefitters install this type of fitting during new construction and retrofit work.
This street elbow is suited for residential and light commercial drain, waste, vent, sanitary, and chemical-resistance piping applications. The spigot-by-hub configuration allows the spigot end to insert directly into a standard hub fitting, simplifying transitions without requiring an additional coupling. It is intended for gravity-flow DWV systems where a shallow directional offset is needed in the piping run. MUELLER STREAMLINE Co. manufactures this fitting as part of a comprehensive PVC DWV line produced in compliance with nationally recognized plumbing standards.
Designed as an OEM-style replacement and standard-production fitting for 4-inch PVC DWV drain, waste, and vent piping systems conforming to ASTM D2665 dimensional standards.
Installation is performed by licensed plumbers in accordance with the International Plumbing Code and applicable local codes. Shut off all flow and isolate the pipe section before cutting in this fitting. Clean and dry mating surfaces thoroughly before applying PVC solvent cement; follow cement manufacturer's cure time requirements before restoring flow. Do not use petroleum-based lubricants or adhesives on PVC DWV fittings.
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