Mueller Streamline CO90LLT38 Copper Long Turn 90 Elbow

Product Description

The MUELLER STREAMLINE CO90LLT38 is a 3/8-inch copper long turn 90-degree elbow with a copper-to-copper (CxC) sweat connection on both ends. Designed for use in pressure piping systems, this fitting redirects flow at a 90-degree angle while the long-turn radius reduces turbulence and pressure drop compared to a standard short-turn elbow. It is installed by licensed plumbers and HVAC technicians working on refrigerant lines, domestic water supply, or hydronic systems where a smooth directional change is required.

This fitting is suited for residential and light commercial plumbing and HVAC installations. The CxC configuration requires soldering both ends to copper tubing, making it a standard sweat-fit connection used in water distribution, refrigerant piping, and radiant heating applications. The long-turn geometry is preferred in applications where flow efficiency and minimal restriction matter, such as supply lines, chilled water loops, and refrigerant suction lines.

Key Features

• Long-turn 90-degree radius reduces flow restriction and pressure drop versus short-turn elbows
• 3/8-inch CxC sweat connections on both ends for standard copper tubing
• Copper construction provides corrosion resistance and compatibility with potable water systems
• Suitable for refrigerant, domestic water, and hydronic piping applications

Compatibility

Designed as an OEM-style sweat fitting for use with 3/8-inch copper tubing in standard plumbing and HVAC pressure piping systems.

Installation Notes

Installation should be performed by a licensed plumber or HVAC technician in accordance with applicable local plumbing codes and IFGC or IPC requirements. Shut off and depressurize the system and drain all fluid before cutting into an existing line. Both cup ends must be cleaned, fluxed, and properly sweated using a torch and lead-free solder appropriate for the application. Allow the joint to cool completely before repressurizing the system.

Technical Specifications

• Connection Type: CxC (Copper to Copper Sweat)
• Pipe Size: 3/8 inches
• Turn Angle: 90 degrees
• Turn Type: Long Turn
• Material: Copper

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: CO90LLT38