Type : Quadrant Fire Damper With Melting Fuse
Fire Rating : 30 Series-3 hour.
Blade Type : 3V Single Skin; A : Parallel Operation
Construction : Stainless Steel (SS), Galvanized Steel (GI)
QFD B-F-30 Series is a high performance UL 555 Classified fire damper with 3hr. fire rating, operated manually with quadrant, installed horizontally (with blades running horizontally) and is rated for airflow and leakage in either direction.
Fire Rating : 3 hrs
Max Velocity : 2000 fpm
Max Operating Pressure: 4 in. w.g (1000 pa)
16 gauge (1.4 mm – 1.7 mm) thick Stainless Steel.
Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm – 1.7 mm) thick galvanized steel.
12 mm diameter Galvanized steel shaft.
Mild steel Spring ( 30lb).
Minimum 0.9 mm, single section is field or factory installed.
Multiple section is factory installed.
Sleeve thickness as per NFPA table 3-4.6.3.
1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm).
Silicon rubber blade seals.
Externally mounted open, close visible Indicator.
Neck adapter for round duct connections.
Model : QFD-SGB-F-D-30A/R UL 555 Damper meets the required standards of SMACNA, NFPA, IBC, BOCA, ICBO, UL.
Note : * Standard Fusible link temperature is 165°F
Above 165°F available upon customer request.