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.
Data
UL-555 Test Ratings
Fire Rating : 3 hrs
Max Velocity : 2000 fpm
Max Operating Pressure: 4 in. w.g (1000 pa)
Standard Construction
Frame
16 gauge (1.4 mm – 1.7 mm) thick Stainless Steel.
Blades
Parallel operated 3 ‘V’ type blade made of 16 gauge (1.4 mm – 1.7 mm) thick galvanized steel.
Jamb Seals
Stainless steel.
Jack Shaft
12 mm diameter Galvanized steel shaft.
Spring
Mild steel Spring ( 30lb).
Fusible Link
165°F
Operator
Manual quadrant.
Sleeve
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.
Optional Fittings
Retaining Angles
1½” x 1½” x 16 gauge (40 x 40 x 1.5 mm).
Blade Seals
Silicon rubber blade seals.
Indicator
Externally mounted open, close visible Indicator.
Transitions (R)
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.
