Harco 69-3109B 3/4 Inch Hdpe Socket Fusion Coupling

Product Description

The HARCO 69-3109B is a 3/4 inch socket fusion coupling manufactured from high-density polyethylene (HDPE) in black, designed for potable water and water service applications. Socket fusion fittings join HDPE pipe by heating both the pipe end and the fitting socket to a controlled melt temperature, then pressing them together to form a permanent, leak-free bond. This coupling is used to join two straight runs of 3/4 inch HDPE pipe and is installed by licensed plumbers and water service technicians working on underground or above-grade water distribution systems.

This coupling is suited for residential and light commercial water service lines where HDPE pipe is the specified material. HDPE is commonly chosen for its resistance to corrosion, chemical exposure, and ground movement, making it a standard choice for buried water mains and service laterals. The black colorway is typical of HDPE water service fittings and aids in UV resistance for above-grade or partially exposed installations.

Key Features

• 3/4 inch socket fusion end connections for permanent, heat-fused joints
• High-density polyethylene (HDPE) construction resists corrosion and chemical degradation
• Black finish provides UV resistance for exposed or partially buried installations
• Straight coupling configuration joins two sections of 3/4 inch HDPE pipe in line
• Designed for potable water and general water service applications

Compatibility

Designed as an OEM-style replacement fitting compatible with standard 3/4 inch HDPE water service pipe systems using socket fusion joining methods.

Installation Notes

Socket fusion fittings must be installed by a qualified plumber or pipe fusion technician using a properly sized socket fusion tool calibrated to the correct melt temperature for HDPE. Always depressurize and isolate the water service line before cutting and fitting. Allow the fused joint to cool completely without movement before restoring pressure. Installation should comply with applicable local plumbing codes and ASTM standards for HDPE water service piping.

Technical Specifications

• Material: High-Density Polyethylene (HDPE)
• Connection Type: Socket Fusion
• Pipe Size: 3/4 inch
• Color: Black
• Application: Water Service
• Order Increment: 1

Standard Information

• Brand: HARCO
• Manufacturer Part Number: 69-3109B