What Mueller Streamline does

Mueller Streamline Co. is an integrated manufacturer and distributor of copper-based piping systems and flow control solutions, operating as a wholly-owned subsidiary of Mueller Industries, Inc. (NYSE: MLI) under the Streamline® brand established in 1930. The company's product portfolio centers on copper tube (grades and sizes specified for CO2 refrigeration, HVACR, plumbing, medical gas, and specialty applications), pre-assembled refrigerant line sets, an extensive range of fittings (copper solder-joint, copper press PRS, ACR copper press, carbon steel press, plastic, and patented tool-free refrigerant brass push), and valves including the 7700NL brass full-port ball valve line and refrigeration-specialized sub-brands such as CYCLEMASTER®, DRYMASTER®, CHECKMASTER®, LINEMASTER®, RELIEFMASTER®, and SAFETYMASTER®.

Underlying product technology emphasizes high-grain-density copper and precision extrusion for durability, heat-transfer performance, and joint integrity, with code-driven compliance for regulated applications including ASME (unfired pressure vessels), UL/cUL Listed and Recognized ratings, Canadian Registration Numbers, and EU Pressure Equipment Directive 2014/68/EU conformity. Patented Refrigerant Brass Push Fittings represent the most recent proprietary technology platform, targeting tool-free, flame-free installation of air conditioning systems.

The business model is wholesale hardware sales: Mueller Streamline sells through authorized distributors and a US-wide network of dedicated sales representatives, supported by a customer service line (1-800-FITTING), a separate West Coast number, dedicated email channels for domestic and international orders, and an international sales office in West Palm Beach, FL alongside the global headquarters in Collierville, TN. Customers are end-user-far B2B segments — wholesale distributors who resell, professional contractors who install and maintain systems, and engineers who specify Streamline® products into plumbing, HVAC, refrigeration, medical gas, PVF, and industrial system designs. Pricing is not publicly disclosed and is set through distributor and sales-representative channels rather than direct e-commerce.

Name

Mueller Streamline

Legal name

Mueller Streamline Co.

Website

https://muellerstreamline.com

Company type

Private

Founded year

1930

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Mueller Streamline Co. manufactures and distributes copper tubing, line sets, fittings, and valves for plumbing, HVAC, refrigeration, medical gas, PVF, and industrial markets, selling through distributors, contractors, and engineering specifiers across North America and internationally under the Streamline® brand since 1930.

Ownership category

akta.pro rank

Headquarters

HQ city

Collierville

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Piping systems products: Mueller Streamline Co. generates revenue through the sale of copper tubing, line sets, fittings, valves, and related piping system components. The company sells to distributors, contractors, and engineers through a wholesale distribution model with sales representatives across the USA.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Mueller Streamline Co. is an integrated manufacturer and distributor of copper piping system solutions under the Streamline® brand. Its core product offering includes copper tubing, line sets, copper fittings (solder-joint, press, push, and carbon steel variants), and a broad range of brass and refrigeration valves. These products are sold to wholesale distributors, contractors, and engineers for plumbing, HVAC, refrigeration, medical gas, and industrial applications.

Product overview

Mueller Streamline Co. offers a comprehensive suite of piping systems solutions under the Streamline® brand, which dates back to 1930. The portfolio centers on copper-based flow control products including copper tube (available for CO2 refrigeration, HVACR, plumbing, medical gas, and specialty applications), line sets, and an extensive range of fittings (solder-joint, press-fit, carbon steel, and push-connect variants). The company also provides brass valves including the 7700NL series ball valves and specialized refrigeration components sold under sub-brands such as CYCLEMASTER® (ball valves), DRYMASTER® (filter driers), CHECKMASTER® (check valves), LINEMASTER® (diaphragm valves), RELIEFMASTER® (change-over manifolds), and SAFETYMASTER® (pressure relief valves). These products serve plumbing, HVAC, refrigeration, medical gas, and industrial applications, with the Streamline® brand known for quality copper products that set the standard in these industries since the early 20th century.

Differentiator

Problem solved

Functional benefit

Brands

• Streamline®: The company's primary brand for copper tubing, fittings, valves, and related flow control products for plumbing, HVAC, refrigeration, and industrial applications.
• Streamline PRS™
• Streamline XHP™
• STL Carbon Press
• STL-G Carbon Press Fittings (GAS)
• ACR Copper Press
• CYCLEMASTER®
• DRYMASTER®
• CHECKMASTER®
• LINEMASTER®
• RELIEFMASTER®
• SAFETYMASTER®

Products and services

• Streamline® Copper Tube Precision-made copper tubing products for plumbing, air-conditioning, refrigeration, medical gas, and other piping systems applications, available in CO2 refrigeration, HVACR, plumbing, medical gas, and specialty tube variants.
• Streamline® Line Sets Pre-assembled refrigerant line sets combining liquid line and suction line tubing with fittings, insulation, and custom connections for HVAC systems, in standard and mini-split configurations.
• Streamline® Copper Solder-Joint Fittings Wrot copper and cast bronze solder-joint copper fittings for supply/pressurized systems, offering the most extensive product selection in the industry for plumbing and HVAC applications.
• Streamline® PRS Copper Press Fittings Mechanical press copper fittings designed to join ASTM B88 (Types K, L, M) hard-drawn and soft copper tube in sizes ranging from 1/2 inch to 4 inch for plumbing or mechanical applications.
• Streamline® ACR Copper Press Fittings Innovative and reliable press fittings specifically designed for refrigerant applications in air conditioning and refrigeration systems.
• Streamline® Carbon Steel Press Fittings Steel piping system products under the Streamline brand, including carbon steel press fittings for piping systems.
• Streamline® Copper-Iron Products (XHP) Copper-iron tube and fittings for refrigeration applications, available in sizes from 3/8 inch to 2-5/8 inch with continuous 90 Bar / 1,300 PSI or 130 Bar / 1,885 PSI pressure ratings at 120°C / 250°F.
• Streamline® Refrigerant Brass Push Fittings Patented tool-free and flame-free technology for quick and dependable air conditioning system installs and repairs.
• Streamline® 7700NL Series Brass Full Port Ball Valves Brass full port ball valves for industrial and commercial applications, available in sizes from 1/4 inch to 4 inch with high-pressure capabilities for water, oil, and gas systems, and multiple end connections (threaded, solder, PEX F1807/F1960, and hose).
• CYCLEMASTER® Ball Valves Standard ball valves for refrigeration applications.
• DRYMASTER® Filter Driers High-capacity filter driers for refrigeration systems, including liquid line flare and heat pump configurations, plus replacement cores.
• CHECKMASTER® Check Valves Check valves for refrigeration applications with flare-to-flare connections.
• LINEMASTER® Packless Diaphragm Valves Packless diaphragm valves for refrigeration in angle configuration with NPTFE to flare connections.
• RELIEFMASTER® Change-Over Manifold Change-over manifolds allowing easy replacement of attached relief valves and rupture discs while systems are operative, including a ball valve manifold variant suitable for CO2 applications.
• SAFETYMASTER® Pressure Relief Valves Pressure relief valves designed primarily for liquid receiver applications, complying with ASME code for unfired pressure vessels, with temperature range -40°F/300°F and discharge rates certified by National Board of Boiler & Pressure Vessel Inspectors.
• Streamline® Sight Glass/Moisture Indicators Hermetically sealed sight glasses and moisture indicators for refrigeration systems, available in copper body solder and flare configurations with continuous operating temperature -40°F/185°F.
• Streamline® Strainers (Copper Inline, Solder) Copper inline strainers for refrigeration with solder connections, design pressure/MAP 700 psig / 48 bar, operating temperature -40°F/300°F, UL/cUL Listed, and conforming to Pressure Equipment Directive 2014/68/EU.
• Streamline® Packed Line Valves Packed line valves for refrigeration systems available in angle and two-way configurations, design pressure/MAP 700 psig / 48 bar, in flare, solder, and NPTFE connection types.
• Streamline® Transducer Valves Transducer valves with forged brass body and plated steel stem suitable for refrigerants and other industrial fluids, UL/cUL Recognized, conforming to Pressure Equipment Directive 2014/68/EU.

Quantifiable outcome

• Streamline brand has been preferred and specified brand of professionals around the world since 1930

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Mueller Industries, Inc.coreOthersMueller Streamline Co. is a company of Mueller Industries, Inc. Products are manufactured by Mueller Industries companies using superior processes and highest quality materials. Mueller Streamline Co. also sells other Mueller Industries companies' brands including refrigeration valves, HVAC/R protection devices, brass flare fittings, iron fittings, steel pipe, plastic tubing and fittings, plumbing valves, and plumbing specialties.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Watts Water Technologies: Watts Water Technologies manufactures a broad portfolio of plumbing, flow control, and water quality products including valves, fittings, and backflow preventers — overlapping with Mueller Streamline's valve and plumbing fittings lines and serving the same plumbing/HVAC distributor channel.
• Mueller Industries: Mueller Industries (NYSE: MLI) is the publicly traded parent company and operates a broader portfolio of copper, brass, aluminum, and plastic products across plumbing, HVAC, and industrial markets. Comparable as the consolidated platform of which Mueller Streamline is a part.

Direct peers

• Viega LLC: Viega is a leading manufacturer of press fittings (ProPress), push fittings, and PEX systems for plumbing and HVAC, competing directly with Streamline PRS press fittings and Refrigerant Brass Push Fittings in contractor-driven specifications.
• Elkhart Products Corporation: Elkhart Products is a U.S. manufacturer of copper fittings, brass fittings, and cast bronze products for plumbing, HVAC, and industrial applications — directly comparable product family and customer base to Mueller Streamline's copper fittings business.
• NIBCO: NIBCO manufactures valves, fittings, and flow control products for plumbing, HVAC, and industrial applications in copper, brass, iron, and plastic — directly comparable product breadth and channel to plumbing/HVAC distributors.
• Apollo Valves (Aalberts Hydronic Flow Control): Apollo Valves manufactures ball valves, check valves, relief valves, and specialty valves for plumbing, HVAC, and industrial applications — directly competing with Streamline's 7700NL ball valves and refrigeration valve family (CYCLEMASTER, CHECKMASTER, SAFETYMASTER).
• Wieland Group: Wieland is one of the world's largest manufacturers of copper and copper alloy semi-finished products, including tube, fittings, and components for plumbing, HVAC/R, and industrial markets — directly overlapping Mueller Streamline's copper tube and fittings portfolio.
• Reliance Worldwide Corporation (SharkBite): Reliance Worldwide, owner of SharkBite and SharkBite-branded push-to-connect fittings, is the leading push-fit competitor in residential and commercial plumbing — directly comparable product category competing for the same contractor and distributor shelf space.

Emerging players

• Uponor Corporation: Uponor is a leading manufacturer of PEX-based plumbing, radiant heating, and pre-insulated pipe systems, competing with Mueller Streamline's copper tube in residential potable water and hydronic heating — partial overlap focused on plastic alternatives.

Regional players

• Halcor (Elval Group / Viohalco): Halcor is a major European copper and copper alloy tube and fittings manufacturer serving HVAC, plumbing, and industrial markets — comparable product portfolio to Mueller Streamline but primarily serves Europe, the Middle East, and adjacent regions rather than the U.S.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCm_a-otVyhKgcP94YS8Ua1A
• LinkedInlinkedin.com/company/15982985

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Mueller Streamline