Chapter 7: Modifying Your Blower
Product Service 1-800-522-7658
40
Original instructions
Thermoplastic Duct Reducers
PVC coupling type reducers are designed for connecting thermoplastic duct of
different diameters. Compare your blower inlet size with your duct size to see if
one is necessary.
Nominal Size/Inches
6x8
8x10
10x12
12x16
Catalog Number
56059
56060
56061
56307
Shipping Wt./lbs.
2
5
6
8
Equivalent Resistance in
feet of Straight Duct
0
0
0
0
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
6
8
10
12
16
Catalog Number
47222
47223
70951
56221
56222
Height/Inches
36
40
48
56
72
Shipping Wt./lbs.
20
25
30
35
40
Equivalent Resistance
in feet of Straight Duct
5
5
5
5
5
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
7" for use with
6" fittings
9" for use with
8" fittings
11" for use with
10" fittings
13" for use with
12" fittings
Catalog Number
19651
47194
70277
56223
Shipping Wt./lbs.
10
15
20
25
Equivalent Resistance in feet
of Straight Duct
Because this ductwork is flexible and may conform to various configurations,
it is not possible to know the precise equivalent resistance.
Manual Duct Dampers
This damper fitting allows you to balance airflow. 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
6
8
10
12
16
Catalog Number
47242
47413
59834
59812
47264
Shipping Wt./lbs.
10
12
15
20
25
Approx. Height/Inches
14
19-1/8
19-1/2
19-2/3
24
Summary of Contents for 7061110
Page 36: ...Chapter 5 Using Your Blower Product Service 1 800 522 7658 32 Original instructions...
Page 48: ...Chapter 7 Modifying Your Blower Product Service 1 800 522 7658 44 Original instructions...
Page 58: ...Chapter 9 Troubleshooting Product Service 1 800 522 7658 54 Original instructions...
Page 62: ...Product Service 1 800 522 7658 58 APPENDIX B BLOWER DIMENSIONS...
Page 63: ...Appendix B Blower Dimensions Product Service 1 800 522 7658 59 Original instructions...
Page 64: ...Appendix B Blower Dimensions Product Service 1 800 522 7658 60 Original instructions...
Page 72: ...Product Service 1 800 522 7658 68 APPENDIX F TYPICAL PERCHLORIC ACID HOOD INSTALLATION DIAGRAM...