FUCARE provides comprehensive blast protection products for shelters including blast valve, blast damper, blast door, blast window and other supporting lines.
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FC-RLD-LP Heavy-duty Bubble-tight(Zero leakage) Air Tight Dampers

FUCARE Bubble-tight Dampers are designed to provide the best tightness at extremely high pressure, up to 20KPa differential pressure by FC-RLD-LP without permanent deformation which may affect its tightness performance. Therefore, this product is capable to tackle the most critical situations for key buildings or systems such as air filtering systems of biotechnology labs, hardened shelters, control room of nuclear power plant, control buildings of OGP industry.

+ Features&Benefits
  • Assure bubble-tight tightness at differential pressure up to 20KPa
  • Stand high pressure in elastic range
  • Maintain all functions after high pressure
  • Good corrosion resistant performance
+ Specifications

Frame material: Coated steel/SS304/SS316

Blade material: Coated steel/SS304/SS316

Working pressure: 30KPa

Zero-leakage pressure: 20KPa

Sealing type:Silicon Rubber

[Leakage rating]


Test method

Rating by criteria


Ventilation for buildings. Air terminal devices. Aerodynamic test.

FIGURE 1 (Blade)

Class 4

(The best)

FIGURE 2 (Casing)

Class C

(The best)

AMCA 500D-18

Laboratory Methods of Testing Dampers for Rating


Bubble-tight (Zero Leakage) at 100KPa

KTA 3601-2017

Ventilation Systems in Nuclear Power Plants


Class 1

(The best)

Note: The leakage test was done after the specimen had been under 180KPa differential pressure with blade closed.

+ PN

Refer to lealfet

+ Certificates

Product is certified by ERUOFINS EXPERT SERVICES, Finland. Test report available upon request.

+ Applications
  • NBC shelters
  • OGP
  • Chemical
  • Nuclear power
  • Others

+ Literature