Field Controls 46198901 4MG1 4" MG1 Barometric Draft Control For Gas Applications MG1 Overview 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". 4" MG1, 4"MG1 4MG1
