Mueller Streamline PF40191 Copper Press Tee 4x4x1/2 in

Product Description

The MUELLER STREAMLINE PF40191 is a wrot copper press tee designed for professional plumbing and mechanical piping systems. With a configuration of 4 inches by 4 inches by 1/2 inch, it connects runs and branch lines using a tool-based press connection on all three ends — no open flame required. The fitting is rated to 300 psi maximum working pressure and handles temperatures from -20 degrees F to 250 degrees F. It is lead law compliant and certified, NSF 61 listed, and meets ASME B16.51 dimensional standards. Licensed plumbers and pipefitters install this fitting in both residential and commercial settings.

The PF40191 is suited for above-ground and below-ground installations where local code permits press-fit copper connections. Its 4-inch main run with a 1/2-inch branch outlet makes it a practical choice for reducing branch tie-ins on larger distribution lines in hydronic heating, domestic water, and mechanical systems. The press-end design works with most common pressing tools and jaws available in the field, reducing installation time compared to soldered joints.

Key Features

• All three ends use press connections — no torch, flux, or solder required
• Rated to 300 psi maximum operating pressure
• Temperature range of -20 degrees F to 250 degrees F suits a wide range of system types
• Provides 360-degree leak detection for fittings from 1/2 inch to 2 inches regardless of orientation
• Anti-creep protection maintains joint integrity during installation and service
• Lead law compliant and certified; NSF 14 and NSF 61 listed; IAPMO listed
• Includes a 50-year limited warranty against defects in material and workmanship

Compatibility

Compatible with most common pressing tools and jaws available in the market for copper press fittings. Designed for use in plumbing and mechanical applications in above-ground and below-ground installations as permitted by local code.

Installation Notes

Installation must be performed by a licensed plumber or pipefitter in accordance with applicable local plumbing codes. Shut off the water supply and depressurize the system before making any connections. Verify that the tubing meets ASTM B-88 requirements and that the appropriate press jaw size is used for each connection. Inspect each pressed joint for the indicator window leak detection signal before restoring system pressure.