Special Fire Vents

Special Fire Vents

"GDSH"
Domed Fire Vent
Bilco's "GDSH" series automatic fire vents are UL Listed and FM Approved. Polycarbonate domes are virtually unbreakable and give the added value of a skylight.



SPECIFICATIONS: Type GDSH. Furnish and install where indicated on the plans, automatic Fire Vent Type GDSH, size___ as manufactured by The Bilco Company. Covers shall have polycarbonate domes framed with rigid extruded aluminum and coated for UV resistance. Cover assembly shall be designed to withstand a minimum live load of 40 lb/ft² (195 kg/m²) and impact energy of 400 ft-lb (55.3 kg f•m). Domes shall be sealed with a continuous butyl gasket and secured by an extruded aluminum retainer for complete weathertightness. Cover shall have a built-in drainage channel for the removal of condensation. Curb shall be of 11 gauge (2.3mm) aluminum [or 14 gauge (1.9mm) paint bond G-90 galvanized steel], 12" (305mm) in height with a fixed center drainage channel. Curb shall be formed with a 3-1/2" (89mm) flange with holes for securing to the roof deck and with an integral metal cap flashing of the same gauge and material as the curb, full welded for weathertightness. Capflashing shall be equipped with the BilClip™  flashing system, including stamped tabs and Pak-Rope. Insulation on the exterior of the curb shall be rigid fiberboard 1" (25.4mm) in thickness. All hardware shall be zinc plated and chromate sealed. Factory finish shall be mill finish aluminum [or red oxide primer on steel]. Vent shall be completely assembled with a Thermolatch positive hold/release mechanism designed to hold the covers in the closed position against 30 Ib/ft² (146 kg/m²) wind uplift forces without over stressing the fusible link. Covers shall each have two heavy duty hinges, EPDM rubber gasket, heavy duty shock absorber and pull handles for inside and outside operation. Torsion rods shall actuate a centrally located operating arm to open the covers against 10 lb/ft² (49 Kg/m²) snow/wind to the full open position where they will lock automatically. Vent shall open automatically when heat breaks the 1650 degreesF (74 degrees C) UL listed fusible link and shall be labeled as being FM Approved or UL Listed. Installation shall be in accordance with manufacturer's instructions. Manufacturer shall guarantee against defects in material or workmanship for a period of five years. Contractor shall test for proper operation after installation by fusing the link and a replacement fusible link shall be furnished with the vent. Manufacturer shall provide instructions with each unit for resetting the latching device.

"SV" Single Leaf Fire Vent
Single leaf fire vents are available for applications which require smaller vent areas. They can be specified in the materials and sizes of standard Bilco roof scuttles: i.e. S-20SV 3'0" x 2'6" (914mm x 762mm). Vents with opening widths over 5'0" (1520mm) should be specified with aluminum covers.

Single leaf fire vents can be specified with a variety of options including motorized or winch operation.





SPECIFICATIONS: Same specifications as Type DSH except: - Omit reference to UL Listed or FM Approved - For vents modified for motorized or winch operation omit reference to Thermolatch mechanism.