1. Engineered Water Heating Solutions introducing

2.  AquaPLEX is:...the engineered brand for potable water heating defined by:  Lean duplex stainless steel alloy material  ASME section IV, IV part HLW, and VIII code certified products  Engineering design control of fabricated materials  Specialized metal cutting technology  State of the art welding technology  Immersion pickling and passivation processing

3.  AquaPLEX is: ◦ Lean Duplex stainless steel alloy Lean = high chromium, low nickel, other elements for enhanced corrosion resistance Duplex = Austenitic (300 series) and Ferritic (400 series) grain structures combined for strength and corrosion resistance to chloride stress cracking Material Content for commercial material and PVI AquaPLEX C Mn Cr Ni Mo N Other  PVI ASME II A SA-240 0.04 6.0 21.5 1.5 0.5 0.23 Cu: 0.45  Typical LDX 2101 0.03 5.0 21.5 1.5 0.3 0.22 Cu: 0.30 Grain structure

4.  AquaPLEX is: ◦ ASME section IV, IV part HLW and VIII code certification  Material certification  Design certification  Welding certification  Pressure vessel certification  Every pressure vessel is code stamped after fabrication

5.  AquaPLEX is: ◦ Engineering design control of fabricated materials  ASME construction requirements (calculated strength values)  Joint designs to prevent crevice corrosion formation  A crevice is defined as two adjoining materials with the attachment joint that is > 2x depth to width ratio creviceNo crevice

6.  AquaPLEX is: ◦ Specialized cutting technology  Waterjet cutting with 3-axis (vertical) and 5-axis (beveled) cutting heads  50,000 psi water and diamond dust with no residual heat signature

7.  AquaPLEX is: ◦ State of the art welding technology  Synergic twin pulse robotic welding practices robotic welding tip tig manual/auto feed welding

8.  AquaPLEX is: ◦ Full immersion pickling  4-5% HF @ 105F @ 60 min  removal of heat tint  restores chromium depleted layer from welding processes  Restores 50/50 ratio material grain structure post-welding

9.  AquaPLEX is: ◦ Full immersion passivation  20% HNO 3 @ 105F @ 60 min  Restores chromium oxide layer on all metal surfaces  2-3mm surface finish prevents development of corrosion from potable water  Water reactivates chromium oxide layer, keeps corrosion resistance properties intact

10.  AquaPLEX is:  Lean duplex stainless steel alloy material  ASME section IV, IV part HLW, and VIII code certified products  Engineered joint design control of fabricated materials  Waterjet cutting via 3 and 5 axis heads with no heat signature  Synergic pulse and TipTig welding technology  Immersion pickling and passivation processing  Compromise is not acceptable – no single point of failure allowed

11.  AquaPLEX is: Not just material – it’s the design, fabrication and processing that makes an excellent choice of material better!  10 year warranty including chloride stress cracking  Gas fired heat exchangers and tanks for all energy source storage water heaters Eliminate water heater corrosion in one easy spec…with AquaPLEX