August 2014

EM/Cowl Silencer Products

Key Markets

Well Established Customer Base

The EM/Cowl Difference

• Engineering– Collaborative approach– Industry leading technology and experience

• World Class Performance– Quality manufacturing processes– Experienced workforce– First class workmanship– Product consistency– Prompt responsiveness– On-going customer support

“As a long-term solutions partner, we are always committed to your silencing needs.”

Engineering Solutions

• LMS – Acoustical Prediction Software– Ability to tune for a specific frequency attenuation

• FEA – Finite Element Analysis– Structural– Thermal– G-loading– Point loading

Industry leader in acoustical technologies…

Engineering Solutions

Particle Tracing

Back Pressure Profile

Velocity Flow Profile

Computational Fluid Dynamics

Attenuation Grades

J-Series (Cylindrical)

• Dual Shell Construction• Aluminized/Carbon Steel Construction• Stainless Steel Offered• Inlet/Outlet Configurations• Custom Designs Available• Optional Spark Arresting Design• Broad Range of Attenuation

– Industrial: 12-18 dB(A)– Residential: 18-25 dB(A)– Critical: 25-35 dB(A)– Hospital: 35-40 dB(A)– Extreme and Super Extreme Attenuation are also available

Oval Silencers

• Maximize Volume with Lower Profile– Additional Attenuation

• Shell Packed with 2” of Fiberglass Insulation– No internal insulation in the critical grade

• Carbon/Stainless Steel Construction• Inlet/Outlet Configurations• Custom Designs Available• Attenuation:

– OC Critical Grade: 28-36 dB(A)– OH Hospital Grade: 34-42 dB(A)– OSH Super Hospital Grade: 38-46 dB(A)– OX Extreme Grade: 44-52 dB(A)

Disk Silencers

• Designed for Limited Space Claims• Shell Packed with 2” of Fiberglass Insulation• Carbon/Stainless Steel Construction• Inlet/Outlet Configurations• Custom Designs Available• Optional Spark Arresting Design• Attenuation:

– DHK Hospital Grade: 26-43 dB(A)– DCK2 Critical Grade: 22-36 dB(A)

CPJ Series (Compact)

• Compact, Economical Silencer• Combination of Absorptive and Reactive Designs• Shell Packed with Fiberglass Insulation• Aluminized/Stainless Steel Construction• Inlet/Outlet Configurations• Custom Designs Available• Attenuation:

– Residential Grade: 19-25 dB(A)

EM Product Line Overview

Grade dB(A) Cylindrical (J-Series)

Low Pressure

DropSA w/ DNV

SA w/ ATEX

SA only Disk Disk

w/ SA Oval Compact

N/A N/A SAU

Industrial 12-18 JI SSU SSA

Residential 18-25 JR TAU SRU SRA CPJ

Critical 25-35 JC TBU SCU SCA DCK2 DCS OC

Hospital 35-40 JH SHU SHA DHK DHS OH

Super Hospital

38-46 OSH

Extreme 40-52 OX

Super Extreme

45-60

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Spiral Silencers

• Industry Leading Compact Silencers• Single Spiral Chamber• Low Back Pressure/High Flow• Reversible Flow• 1/3 the size and 1/2 the weight• Aluminized/Stainless Steel Construction• Inlet/Outlet Configurations• Attenuation:

– Residential Grade: 22-28 dB(A)– Critical Grade: 28-33 dB(A)

Cowl Product Line Overview

Part Number Prefixes

Silencing Grade dB(A)

Perimeter Discharge Turn Discharge Slot Discharge Vee Engines /

Dual InletsSide

Disch.

PR PL TR TL SR SL PV SV S

[<---------(These letters designate the inlet/outlet layout.)------>]

TS Residential 22-28 √ √ √ √ √ √ √ √

TSX Critical 28-33 √ √ √ √ √ √ √ √

MS Residential 22-28 √ √ √ √

MD Industrial 12-18 √

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• TS and TSX are the principal product lines• The MS product line adds a support bracket to the TS product• The MD product line is a MicroDisc design for small engines• See page 58 of the Silencer Catalog for part numbering format

Customized Designs

• Specific dB(A) Requirements– Up to 60 dB(A)

• Materials:– Aluminized Steel– Carbon Steel– Stainless Steel 304, 316 and 321

• Shapes:– Cylindrical, Disk, Oval, Rectangle or

Custom Space Optimizing Shape

• Types:– Absorptive, Reactive, Spark Arresting,

and Catalytic Combination

• Inlet/Outlet Configurations

Additional Accessories

• Flanges, Fittings and Clamps– ANSI, Engine and Turbo Flanges– Flange Gaskets and BNG Kits– Stack Breakers and Clamps

• Mounting Bands• Piping:

– Corrugated Flex Hose– Elbows– Flex Assemblies– Bellows Expansion Joints– WYE Connectors

• Rain Caps and Guards• Thimbles

Product Comparison

LEADING COMPETITOR EM/COWL PRODUCTS

Manufacturing Consistency

Manufacturing Consistency

Product Advantages

Feature BenefitInternal Engineering Maximum attenuation through design

Reactive or absorptive designsCombination of designs

Dual Shell Construction Eliminates shell radiated noise

Certifications ATEX / DNV

Materials Carbon SteelStainless SteelAluminized Steel (up to 26” diameter)

Manufacturing Quality ISO Registered

Custom Designs Ability to meet attenuation requirementsInlet/Outlet configurationsFull line of accessories

Exceeding Your Expectations

• Project/New Orders• New Installation of Equipment

• Consultative Approach• Engineering Support• Standard or Customized Product

• Quality, R&D Tested Parts• On-time Delivery• Superior Customer Service

Situation

Solution

Results

Added Value Distinctions

• Customization – flexibility and quality• Reputation – program sales history• High performance attenuation … to 60 dB(A)• Innovative custom designs – roof top drop-in• Certifications and qualifications: DNV, ATEX, USDA Forest

Service• Turbo to rain cap Systems Provider• Validated full-scale solutions at the Innovation Center … not

simply modeling

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Questions?