Objectives Offer a reliable, flameless joining system to reduce time and cost of joining copper tubing Keep the professional tradesman’s preferred plumbing material, copper, relevant in a changing world Provide a less costly flameless alternative to press and push type fittings MUELLER INDUSTRIES, INC. - CONFIDENTIAL

Development Partners  Research – Leading University  Fittings – Mueller Industries  Adhesive – 3M Corporation  Seals – Minnesota Rubber  Valves – Conbraco MUELLER INDUSTRIES, INC. - CONFIDENTIAL

Modern Adhesive Uses AF 163-2OST Kevlar/HC Vertical stab. Leading edge Carbon/HC Vertical & Horiz. Stabs. AF 163-2OST Comp/HC Fairings, Flaps AF 163-2K Comp/HC Ailerons AF 163-2XS Lightning Strike AF 163-2U Radome

Adhesive Fittings Currently: ½ - 2” offering....over 180 items Soon: 2½ - 4” offering...over 250 items Standard (solder) wall thickness Made in USA with 75-years of experience Rated for 250psi systems up to 180°F

Fitting Notes MUELLER INDUSTRIES, INC. - CONFIDENTIAL Stampings on each cup... One side: “ST” for StreamTECH Size notation Other side:“NSF-61” for potable water Press tool will not fit elbows, tees, adapters, unions, or valves No cast fittings (ex-drop ear ell) Two-piece flange body

Structural Adhesive Two-part epoxy Standard formula –Black appearance – 20 min. of working life –180 min. to pressure test Quick-set formula in development Simple, low-cost applicator NSF approved MUELLER INDUSTRIES, INC. - CONFIDENTIAL

Engineered Seals High-chlorination resistant (inc. chloramines) One-way “lip-seal” design –Easy insertion - Compensates for eccentricity –Strong seal - Resists cuts 63% more surface contact than o-rings Engineered Seal

Valve Partnership Sold by Apollo Valves (Conbraco) Utilize identical design and seal Currently: – ½ - 2” Bronze ball valve – 77 Series

Installation Steps Step 1 - After cutting and deburring tube, clean tube surface with an alcohol wipe. Step 2 - Mark tube to depth of insertion plus ½”. Step 3 - Place a small ribbon of adhesive around the tube and, above 1”, inside the fitting. Step 4 - Push fitting on the tube, making a ¼-turn motion, forcing a bead of excess adhesive out of the joint. Step 5 - Position fitting as needed. Then, allow joint to cure prior to pressure testing.

Top 10 Reasons to use an Adhesive Fitting System 10.Allows repositioning of fittings during installation 9.Seals tube imperfections that conventional O-rings alone cannot 8.Integrates primary and secondary sealing mechanisms 7.Adhesive developed in partnership with 3M Corporation 6.Installs with no electricity, gas, or VOCs...environmentally friendly 5.Joining is fast and intuitive – little training required 4.Offers superior performance to press, push, CPVC, and PEX 3.Uses reliable, lightweight, inexpensive wrot copper fittings 2.Does not require expensive, cumbersome tools for installation 1.Offers lowest installed cost of a copper plumbing system MUELLER INDUSTRIES, INC. - CONFIDENTIAL

Tension (PULL) Test Determines shear-force capacity of assembly

Hydrostatic pressure Test Determines static pressure capability at 72° & 180°F

Hydraulic Shock Test Subjects assembly to 10,000 cycles of water hammer

Vibration Test Subjects assembly to 1 million cycles vibration

Thermocycling Test Takes ½” & 2” systems from 72° to 180°F for 7000 cycles

Third-Party Listings NSF listing for potable water ½ - 4” IAPMO “Classified” listing ½ - 4” –IAPMO Standard IGC ICC-ES PMG listing ½ - 4” –ICC Listing Criteria LC1020

Marketing Approach MUELLER INDUSTRIES, INC. - CONFIDENTIAL Current Focus –Commercial Plumbing –Mechanical / HVAC / Process Piping Future Opportunities –Refrigeration –Natural Gas –Medical Gases

Production Installations Air & water piping extensions installed by a mechanical contractor outside of Memphis 500 feet of 2” tube with ¾” drops on 40-foot centers Two guys put in the necessary supports and completed the installation in less than 16 man hours MUELLER INDUSTRIES, INC. - CONFIDENTIAL

Product Installations Inert gas distribution system installed by a large contractor in Texas in a busy shop environment 2000 feet of copper tube and fittings from ½ - 1” Workers noted the system went in faster than other alternative joining systems MUELLER INDUSTRIES, INC. - CONFIDENTIAL