Page 102 - Gaylord Blue Book 2021

GDS ITEM NO.
Duct Sump

DUCT SUMP

MODEL GDS SERIES

GENERAL SPECIFICATION
Furnish Model GDS - ______ x ______ x 24"L duct sump as manufactured
by Gaylord Industries, Tualatin, Oregon. The sump shall be constructed of
16 gauge stainless steel and shall include 1" flanges at the inlet and out-
let collars for welding to the duct system. All corners and seams shall be
continuously welded. The duct sump shall include a stainless steel spray
manifold with brass spray nozzles, a 1-1/2" drain with pre-flush line. The
sump shall also include an access panel, with 1500°F gasketing, secured
by weld studs with wing nuts for easy removal without tools. If the sump
is larger than 36" wide, there shall be an access panel on each side. The
access panel shall meet all requirements of NFPA-96. The sump shall be
interconnected with the water-wash ventilator control cabinet and wash
simultaneously with the ventilator. (Note: If the system does not include
a water-wash ventilator, a control cabinet must be specified. Refer to
“GPC” Series Control Cabinet specification sheet for details.) Duct sump
shall be approved by the City of Los Angeles, Department of Building &
Safety, Mechanical Testing Laboratories (Research Report Number RR7657).
APPLICATION
The Gaylord Duct Sump is designed to be installed at the low point(s)
of long horizontal duct runs to collect and drain off moisture, liquefied ESTABLISHING MODEL NUMBERS
grease, etc. The International Mechanical Code (IMC) specifies that ducts The model number is determined by the size of the sump. Specify the
must slope not less than 2% towards a hood or a grease reservoir (duct model number as follows:
sump) and that duct runs over 75 ft. must slope not less than 8.3%. The GDS - _______ x _______ x 24" L
W
H
installation of one or more duct sumps allows a 2% slope on duct runs
exceeding 75 ft. by zig zagging the duct up and down as illustrated on Width Height Length
the back of this specification sheet.

TYPICAL DUCT SUMP ARRANGEMENT

GAYLORD INDUSTRIES
10900 SW AVERY STREET • TUALATIN, OREGON 97062 U.S.A.
PHONE: 800-547-9696 • FAX: 503-692-6048 • email: info@gaylordventilation.com