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Greenville, NC (252)752-9141
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New Bern, NC (252)638-1009
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Kinston, NC
(252)523-8255
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MG-1 DRAFT CONTROL
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Gas fired furnaces & boilers
Ref: Double Acting for Gas Systems
Product Description
A double-acting control for gas-fired furnaces and boilers. It is
widely used for conversion burner installations, gas draft-induced
appliance operation with mechanical draft inducers or sidewall power
venters, gas atmospheric appliances where a draft hood cannot be
installed, and can improve combustion stability and draft on many gas
atmospheric installations with venting problems. The MG-1 provides
precise, accurate control of drafts at levels higher than permitted by
a standard draft diverter... a frequent requirement with gas. Because
it is double-acting, it opens out to relieve positive vent system
pressures as low as .001". Draft adjustments using weights are simple
and accurate from .01" to .1".
Gas
A double-acting control for gas-fired furnaces and boilers is widely
used for conversion burner installations, gas draft-induced appliance
operation with mechanical draft inducers, or sidewall power venters. It
is also recommended for use on gas atmospheric appliances where a draft
hood cannot be installed, and can improve combustion stability and
draft on many gas atmospheric installations with venting problems.
The MG-1 provides precise, accurate control of drafts at levels higher
than permitted by a standard draft diverter, which is a frequent
requirement with gas. Because it is double-acting, it opens out to
relieve positive vent system pressures as low as .01". Draft
adjustments using weights are simple and accurate from .01" to
.1".

| Recommended Pipe
Sizes (in.) |
| Model |
Control
Size |
Nominal
Capacity Sq. In. |
Dia. |
Circum. |
A |
B |
C |
D |
E |
G |
M |
| 6"
M |
6 |
28.3 |
5-6-7 |
15 3/4 to
22 |
6 |
5 |
3 |
3
1/4 |
6
17/32 |
2 |
8 |
| 7"
M |
7 |
38.5 |
6-7-8 |
19 to 25
1/4 |
7 |
5
1/4 |
3
1/2 |
3
3/4 |
7
3/8 |
2
1/4 |
8
3/4 |
| 8"
M |
8 |
50.3 |
7-8-9 |
22 to 28
1/4 |
8 |
6
3/8 |
4 |
3
3/8 |
8
5/8 |
3 |
10
3/8 |
| 9"
M |
9 |
63.6 |
8-9-10 |
25 1/4 to
31 1/2 |
9 |
7
1/4 |
4
1/2 |
3
3/4 |
9
5/8 |
1
29/32 |
11
3/4 |
| MATERIAL
GAUGES |
| Size |
RING |
GATE |
COLLAR |
| 4" |
24 |
24 |
26 |
| 5" |
24 |
24 |
26 |
| 6" |
24 |
24 |
26 |
| 7" |
22 |
22 |
26 |
| 8" |
20 |
20 |
26 |
| 9" |
20 |
20 |
26 |

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Service Territory - Kinston, Deep Run, Pink Hill, Seven
Springs, Trenton, Comfort, Dover, Cove City, LaGrange, Snow Hill, Grifton, Ayden, Farmville, Bethel, Greenville,
Winterville, Grimesland, Simpson, Blackjack, Vanceboro, Oriental, New Bern, Emerald Isle, Atlantic Beach, Pine
knoll shores, James City, Havelock, Pollocksville, Goldsboro, Lenoir County, Wayne County, Pitt County, Craven
County, Pamlico County, Onslow County, Jacksonville, North Carolina, NC, Eastern North Carolina.
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