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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
- Nominal Capacity Sq. Inch: 12.6
- Circumference:9-1/2 to 12-1/2
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