Elkhart Products COU-34X58 Copper Coupling 3/4x5/8 in

Product Description

The ELKHART PRODUCTS COU-34X58 is a copper coupling designed to join copper tubing in plumbing, HVAC, and refrigeration systems. This fitting connects a 3/4-inch side to a 5/8-inch side, making it a reducing coupling suited for transitions between two different tube sizes. It arrives cleaned and bagged, meaning the fitting is factory-prepared to meet cleanliness standards for refrigeration and plumbing applications right out of the package. Licensed plumbers and HVAC-R technicians install this type of fitting during new construction, retrofit, and service work wherever copper tubing is the specified piping material.

This coupling is intended for use in residential and light commercial copper piping systems. Typical applications include domestic water supply lines, hydronic heating runs, and refrigerant line sets where a size transition from 3/4-inch to 5/8-inch tubing is required. The cleaned and bagged condition makes it particularly well suited for refrigeration and ACR installations where contamination inside the fitting must be minimized before brazing or soldering.

Key Features

• Reducing coupling joins 3/4-inch tubing to 5/8-inch tubing in a single fitting
• Cleaned and bagged at the factory for refrigeration and ACR service readiness
• Copper construction provides corrosion resistance and compatibility with standard soft and hard drawn copper tube
• Suitable for sweat (solder) or braze installation methods

Compatibility

Designed as an OEM-style replacement and standard-stock fitting for copper tubing systems requiring a 3/4-inch to 5/8-inch reducing coupling connection.

Installation Notes

Installation is performed by licensed plumbers or HVAC-R technicians. Shut off and depressurize the system and purge any refrigerant according to EPA Section 608 requirements before working on refrigerant lines. For water systems, close isolation valves and relieve line pressure before cutting into the pipe. Use appropriate flux and solder or brazing alloy per local plumbing code and the International Plumbing Code (IPC) for the intended service fluid. Do not install this fitting under pressure.

Technical Specifications

• Material: Copper
• Inlet Size: 3/4 inches
• Outlet Size: 5/8 inches
• Fitting Type: Reducing Coupling
• Preparation: Cleaned and Bagged
• UPC: 1775420307144

Standard Information

• Brand: ELKHART PRODUCTS
• Manufacturer Part Number: COU-34X58