AP

Description

The AP low-pressure pressure relief damper is designed to automatically control pressure levels within ductwork or technical rooms. It maintains stable pressure conditions in industrial HVAC systems, tunnels, and Oil & Gas applications through autonomous operation without any electrical power supply.

When the system pressure drops below the preset value, the blades close to isolate the duct and limit air backflow. Conversely, when the pressure rises, the damper automatically opens to balance pressure within the room or duct.

Its robust design with adjustable counterweight ensures excellent mechanical reliability, reduced maintenance requirements, and long-term durability, even in harsh environments.

Thanks to its reinforced construction, the AP pressure relief damper is particularly well suited to demanding industrial environments, tunnels, oil and gas facilities, and technical HVAC systems.

Characteristics

• Type: Pressure relief damper
• Function: Automatic pressure control
• Minimum size: W 200 × H 200 mm
• Maximum size: W 1200 × H 1200 mm
• Blade airtightness: Class 1 according to EN 1751
• Casing airtightness: ATC5 according to EN 1751 (formerly Class A)
• Maximum operating pressure: 3,000 Pa
• Recommended air velocity: 5 to 15 m/s
• Airflow direction: Horizontal
• Operating temperature range: -20°C to +80°C (optional: -50°C to +200°C)
• Materials: Galvanized steel or stainless steel

Performances

• Airtightness
  • AP: Class 1 according to EN 1751
• Pressure rating
  • The AP pressure relief damper range is designed to withstand differential pressures of up to 3,000 Pa with a 700 mm blade length in the galvanized steel version.
• Operating temperature range
  • Standard: -20°C to +80°C
  • Option: -50°C to +200°C

ATEX

• • ATEX certified

Applications

• Tunnels
• Oil & Gas facilities
• Heavy industry
• Industrial HVAC systems
• Technical rooms
• Industrial ventilation systems
• Petrochemical installations
• Smoke exhaust systems
• Pressure safety installations