Table of Contents

Introduction

Purpose of Dampers

Types of Dampers

• Louver

• Butterfly

• Guillotine 

  • Typical Applications

  • Orientation

  • Seal Air

• Diverter

• Radial Vane

• Poppet Damper

• Specialty

System Characteristics

Applications

• Guillotine vs. Double Louvers

Material Selection

Design Support

• Bernoulli’s Equation

• Leakage

• Pressure Drop

• Metric Conversions

Vendor Selection And Evaluation

Appendix

• Glossary

• Associations and Codes

• Surface Preparation Standards

• NEMA Enclosure Standards

Bibliography

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