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The HARCO 69-3149C is a 1-inch socket fusion cap for HDPE water piping systems. Manufactured in black high-density polyethylene, this cap terminates the end of a 1-inch HDPE line using a heat-fusion joining method that creates a leak-free, monolithic bond without solvents or mechanical fasteners. Plumbers and pipe fusion technicians install this fitting during new construction, water main extensions, or system modifications where a permanent end-cap is required on an HDPE run. The socket fusion design conforms to standard HDPE fitting dimensions, making it compatible with conventional socket fusion tools used in water service applications.
This cap is used on potable water distribution lines, irrigation mains, and municipal water service laterals where HDPE pipe is the specified material. It is suited for residential and light commercial installations requiring a durable, corrosion-resistant end termination. The black color indicates UV-stabilized material, making it appropriate for applications with exposure to sunlight during above-grade or temporary installations. Licensed plumbers and fusion-certified technicians typically handle HDPE socket fusion work on water service projects.
Designed as an OEM-style replacement and standard fitting for 1-inch HDPE socket fusion water piping systems.
Socket fusion installation requires a calibrated fusion tool with the correct 1-inch socket and spigot inserts heated to the manufacturer-specified temperature range for HDPE. Shut off and depressurize the water line before cutting and preparing the pipe end. Pipe ends must be clean, dry, and cut square before fusion. Work should comply with applicable local plumbing codes and ASTM F1056 socket fusion standards where required.
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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