B-SVG Model - Galvanized Steel Roof Smoke Vent

Downloadable shop drawings and 3-part CSI Specifications for these products located at www.babcockdavis.com/apidx.htm.

Babcock-Davis roof smoke vents provide an automatic roof-top vent system that releases heat, smoke, and noxious fumes during a fire. Each hatch is designed to open automatically when a fusible link inside the hatch reaches a certain temperature, usually 165º F. In addition, smoke vents are spring-operated with shock absorbers to slowly open against wind or snow load. Smoke vents can also be equipped to open electrically.

SPECIFICATIONS FOR ROOF SMOKE VENTS

Cover & Liner:
14-gauge galvanized steel cover is stiffened to withstand a live load of 40 psf with a max deflection of 1/150 of the span. Cover withstands a max wind uplift of 20 psf. Max degree of opening is 78°. 22-gauge galvanized steel liner.
Curb:14-gauge galvanized steel with 12” self-flashing curb.
Optional: Double wall curb at exterior.
Hinge:Heavy-duty zinc plated steel integrated with counter balance spring.
Latch:Positive hold release mechanism designed to hold covers closed against 30 lbs. psf. uplift force. Released by manual pull cables, or by either fusible melt-out link.
Optional: Electric/thermal resettable link.
Single Door:Automatic latching mechanism standard.
Double Door:UL listed 165º fusible link with inside and outside manual releases.
Springs:Heavy-duty steel compression springs designed to open vent covers automatically against 10 psf wind or snow load when released.
Hardware:Heavy-duty shock absorbers, continuous extruded thermal EPDM gasketing, inside and outside manual release cables.
Insulation:1” thick rigid fiberboard at curb perimeter and 1” polystyrene in cover.
Mounting Flange:3½” on single wall curb, 2½” with double wall curbs.
UL Listing:The fusible melt-out link is UL listed.
Finish:Factory applied powder coat.

STANDARD SIZES FOR ROOF SMOKE VENTS

Width x Height
(inches)
Width x Height
(mm)
24 x 24
610 x 610
30 x 30
762 x 762
30 x 54
762 x 1372
30 x 96
762 x 2438
30 x 24
762 x 610
36 x 30
914 x 762
36 x 36
914 x 914
36 x 96
914 x 2438
48 x 48*
1219 x 1219
48 x 72*
1219 x 1828
48 x 84*
1219 x 2134
48 x 90*
1219 x 2285
48 x 96*
1219 x 2438
60 x 60*
1524 x 1524
60 x 96*
1524 x 2438
66 x 144**
1676 x 3658
72 x 72*
1828 x 1828

All units are hinged on the second dimension (length).
*Double door construction. *UL/FM listed.
Odd size Double Door Construction FM Approved only.
**Quad Construction: UL/FM


Babcock-Davis Hatchways
9300 73rd Avenue N.
Brooklyn Park, MN 55428
Tel: (888) 412-3726
Fax: (888) 312-3726
Website: www.babcockdavis.com
E-mail: info@babcockdavis.com