Thumbnail Filmstrip of 30 LB Mega T Sewage Vent Odor Filter 120CFM Max Images
The patented* 30LB Mega "T", is a T-style vent filter that comes standard with 30LBs (1.2 Cubic feet) of Darco H2S carbon. The 30LB Mega "T" utilizes our patented unique perforated disc carbon containment system with flow-through "moisture wicking" design for longer carbon bed life. This vent filter looks as good as it functions. The 30LB Mega "T" is available for 4", 6", 8,and 10" vents.
L=21.688” H=16.782”, W= 10.750”
Standard Inlet+ 10” ASTM D1785 PVC Pipe standard
Data/Cut SheetCarbon Data Sheet Carbon MSDS
Application: Atmospheric Vents/Low Flow Vents.
Overall Length: 21.6"
Overall Height: 16.8"
Installed Height: 13"
Standard Inlet sizes: 10" Socket; ASTM D 2661
Optional couplings: 3" to 10" Van Stone Flange/3" to 8" Socket
Max recommended CFM: 120 CFM providing .6 seconds contact time
Carbon Capacity: 30LBS/1.2 cubic feet *
Carbon Type: CatalyticH2S
Breakthrough Capacity gH2S/cc carbon; .15 (Min) ASTM D 6646
Carbon Bed Life and Contact Time Calculator
In order to calculate the life estimate of this filter, you will need to know two pieces of informaton. You will need to know the concentration of hydrogen sulfide in the airstream and the volume of air moving through the filter. We have a blog entry that tells you what tools you will need to derive the PPM of the H2S and the CFM of the air. You will be presented with various carbons that remove H2S, their bed contact time and carbon bed life in hour and days.
Darco H2S Catalytic Carbon Life Estimates |
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Carbon Life Estimate based on constant flow at 10 PPM H2S Concentration |
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CFM |
1CFM |
5CFM |
10CFM |
20CFM |
30CFM |
50CFM |
75 CFM |
Carbon Bed Contact Time-Seconds |
72 |
14.4 |
7.2 |
3.6 |
2.4 |
1.44 |
.96 |
Carbon Life Days |
8208.63 |
1641.65 |
820.82 |
410.41 |
273.61 |
164.16 |
109.44 |
Carbon Life Hours |
196997.55 |
39399.51 |
19699.75 |
9849.88 |
6566.58 |
3939.95 |
2626.63 |
Carbon Life Estimate based on constant flow at 20 PPM H2S Concentration |
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CFM |
1CFM |
5CFM |
10CFM |
20CFM |
30CFM |
50CFM |
75 CFM |
Carbon Bed Contact Time |
72 |
14.4 |
7.2 |
3.6 |
2.4 |
1.44 |
.96 |
Carbon Life Days |
4104.12 |
820.82 |
410.41 |
205.21 |
136.8 |
82.08 |
54.72 |
Carbon Life Hours |
98498.77 |
19699.75 |
9849.88 |
4924.94 |
3283.29 |
1969.98 |
1313.32 |
Carbon Life Estimate based on constant flow at 30 PPM H2S Concentration |
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CFM |
1CFM |
5CFM |
10CFM |
20CFM |
30CFM |
50CFM |
75 CFM |
Carbon Bed Contact Time |
72 |
14.4 |
7.2 |
3.6 |
2.4 |
1.44 |
.96 |
Carbon Life Days |
2736.08 |
547.22 |
273.61 |
136.8 |
91.2 |
54.72 |
36.48 |
Carbon Life Hours |
65665.85 |
13133.17 |
6566.58 |
3283.29 |
2188.86 |
1313.32 |
875.54 |
Carbon Life Estimate based on constant flow at 50 PPM H2S Concentration |
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CFM |
1CFM |
5CFM |
10CFM |
20CFM |
30CFM |
50CFM |
75 CFM |
Carbon Bed Contact Time |
72 |
14.4 |
7.2 |
3.6 |
2.4 |
1.44 |
.96 |
Carbon Life Days |
1641.65 |
328.33 |
164.16 |
82.08 |
54.72 |
32.83 |
21.89 |
Carbon Life Hours |
39399.51 |
7879.90 |
3939.95 |
1969.98 |
1313.32 |
787.99 |
525.33 |