D & D    Chemical,  Inc.

Integrated Pest Management | Pest Control | Termite Control | Home Inspections  

 
 
 

 

 Greenville, NC  (252)752-9141 

 New Bern, NC  (252)638-1009 

 Kinston, NC   (252)523-8255    


  

MG-1 DRAFT CONTROL

  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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