Labconco Spectrum 177050100 User Manual page 51

Zero Pressure Weathercaps
The zero pressure weathercap is made of strong, corrosion-resistant PVC. The cap
adds little static pressure to the exhaust system and allows for vertical discharge of the
effluent air for dispersion away from the building.
Nominal Diameter/Inches
Catalog Number
Height, Inches
Shipping Wt., lbs.
Equivalent Resistant in Feet of
Straight Duct
Spiral Tube
This spiral tube simplifies temporary installations. It is corrosion resistant, neoprene-
impregnated fiberglass reinforced with steel wire. Includes rigid duct connector and two
clamps. Length is ten feet.
Nominal Diameter/Inches
Catalog Number
Shipping Wt., lbs.
Equivalent Resistant in Feet of
Straight Duct
Manual Duct Dampers
This PVC damper fitting allows easier airflow balance. It may be used with exhaust and
auxiliary air ducts, and is usually placed directly above the fume hood, but can be
placed anywhere in the duct system.
Nominal Diameter/Inches
Catalog Number
Shipping Wt., lbs.
Approx. Height, Inches
6 8
4722200 4722300
36 40
20 25
5
7" for use with 9" for use with
6" fittings 8" fittings
1965100 4719400
10
Because this ductwork is flexible and may conform to various configurations, it is not
possible to know the precise equivalent resistance.
6 8
4724200 4741300
10 12
14 19.12
51
10
7095100 5622100
48
30
5 5
11" for use with
10" fittings
7027700
15 20
10
5983400
15
19.50
12 16
5622200
56 72
35 40
5 5
13" for use with
12" fittings
5622300
25
12 16
5981200 4726400
20 25
19.67 24