Pressure Relief Dampers and Backdraft

A pressure relief damper is primarily used to release excess pressure when system conditions require it. A backdraft damper is generally used to help prevent reverse airflow when a ventilation system is inactive or pressure changes direction. The appropriate damper type depends on whether the primary requirement is pressure management, reverse-flow prevention, or another ductwork control function.

IPF offers PVC and CPVC damper construction. PVC dampers are fabricated from GF Harvel seamless extruded duct with Simona Versadur PVC Type 1 sheet. CPVC dampers use Georg Fischer Harvel Corzan CPVC duct and Simona PVC-C Corzan sheet. Material selection should reflect the chemicals, temperatures, and ventilation conditions in the intended system.

The product information identifies gravity, butterfly, blastgate, and metric configurations. These options provide flexibility for airflow control and ductwork damping applications in plastic ventilation systems. The right configuration depends on the system layout, operating requirements, and installation details. IPF can help evaluate the application and identify a suitable damper arrangement.

PVC dampers are available in sizes from 4 inches to 24 inches, while CPVC dampers are available in sizes from 6 inches to 24 inches. Selection should account for the connected ductwork and ventilation system requirements. Confirming the required size and configuration with IPF helps support proper integration into the plastic ventilation system.

These dampers are intended for airflow control in plastic ventilation systems, ductwork damping applications, and industrial ventilation systems. They are particularly relevant where ventilation equipment must handle harsh, chemical-laden gas streams. The application environment, chemical exposure, system design, and required damper function should all be considered during selection.

PVC and CPVC provide thermoplastic construction options for industrial ventilation systems exposed to corrosive conditions. IPF’s dampers use precision-welded fabrication and materials selected for the specified product construction. Compared with conventional metal equipment, corrosion-resistant thermoplastic solutions can be appropriate for chemical ventilation applications where material compatibility and dependable airflow control are important.