Product overview
What it is and where it fits.
A pressure relief damper opens automatically when a room's pressure rises above a set level, releasing excess air to an adjacent space. It keeps the pressure cascade between cleanroom zones stable and protects doors and walls from over-pressure.
Yiding dampers have painted steel or stainless steel bodies with aluminium blades, in 460 × 260 mm and 600 × 400 mm sizes.
- Equipment
- Pressure relief damper
- Body
- Painted steel or stainless steel
- Blades
- Aluminium
- Sizes
- 460 × 260 mm and 600 × 400 mm (W × H)
Typical applications
- Pressure cascades between cleanroom grades
- Airlocks and gowning rooms
- Pharmaceutical and hospital clean areas
Construction & performance
Construction
Painted steel or stainless steel body with aluminum damper blades for pressure relief.
Published sizes
460 (W) × 260 (H) mm and 600 (W) × 400 (H) mm.
Selection
Provide the pressure differential to maintain, the airflow to relieve and the mounting opening for selection.
Selection guide
How to choose.
What to send us
The pressure differential to maintain, the airflow to relieve and the wall opening size.
Technical data
Specifications & dimensions.
Configuration-specific data available on enquiry.
This product is configured to order. Tell us your application and we will send the drawing and technical data.
FAQ
Common questions.
Why do cleanrooms need pressure relief dampers?+
Cleanrooms are kept at higher pressure than surrounding areas so air flows outward. A relief damper releases excess air so the pressure difference stays within the design range when doors open or airflow changes.



