Known. Trusted. Preferred.

Mueller Streamline manufactures all three standard copper tube types: Type K (heaviest wall, underground), Type L (standard plumbing), and Type M (lighter wall, DWV). Each meets ASTM B88 specifications.

Press-connect copper fittings eliminate the need for soldering, reducing installation time by up to 60%. The O-ring seal creates a permanent, leak-free joint with a simple press tool.

Push-fit brass fittings for refrigerant lines provide a flame-free connection method. Simply cut, deburr, and push — the fitting grabs and seals in one motion.

Carbon steel press fittings are designed for hydronic heating, chilled water, and compressed air systems. Press technology brings speed and safety to commercial and industrial piping.

Air Conditioning and Refrigeration (ACR) copper press fittings enable fast, reliable connections on HVAC linesets without brazing. Nitrogen-charged to prevent oxidation.

Every Mueller Streamline product undergoes rigorous quality testing. Known. Trusted. Preferred. — the tagline backed by over 90 years of consistent American manufacturing excellence.