Field Controls 01986501 8" MG1 Barometric Draft Control for Gas Appliances

The Field Controls 01986501 (8MG1) is a double-acting barometric draft control designed specifically for gas-fired furnaces and boilers. This 8-inch draft regulator maintains consistent draft by counteracting negative forces caused by temperature changes, wind fluctuations, and barometric pressure variations to ensure optimal combustion efficiency.

Key Features:

• Double-acting design opens outward to relieve positive vent system pressures as low as 0.01 inches
• Precision draft adjustments using weights from 0.01" to 0.1" for accurate control
• 8-inch diameter fits 7 to 8 inch vent pipe circumferences (22 to 25.25 inches)
• Nominal capacity of 50.3 square inches
• Constructed of galvanized steel with stainless steel components for durability
• CSA, UL, and cUL certified for safe operation

Applications: Widely used for conversion burner installations, gas draft-induced appliance operation with mechanical draft inducers, sidewall power venters, and gas atmospheric appliances where a standard draft hood cannot be installed. This draft control improves combustion stability and draft performance on gas installations with venting problems, providing precise draft control at levels higher than permitted by standard draft diverters.

Professional installation by a licensed contractor is recommended for proper operation and optimal fuel efficiency.