Flap Check Valve

The flap check valve prevents air backflow and non-explosive air mixtures between different rooms within a ventilation system. It also protects the room from external air and weather elements after the fan is switched off.

Technical specifications:

• Minimum airflow speed: horizontal section — 1.5–2 m/s, vertical section — 4 m/s;

• Maximum airflow speed — 9 m/s;

• Suitable for rectangular and round ducts;

• Durable and corrosion-resistant materials for long service life.

Benefits:

• Reliable backflow protection for ventilation systems;

• Easy installation and maintenance;

• Ideal for residential, commercial, and industrial spaces.