is a precision-engineered 8-inch double-acting barometric draft control designed specifically for gas-fired appliances

Automatic Cut-Out Logic: Safely disconnects the start capacitor circuit to prevent auxiliary winding overheating

If you observe yellow-tipping or lifting flames that persist after adjusting the primary air shutter

Built with a heavy-gauge steel rolled frame and ball bearings

but the internal components are identical OEM specs

Bray Commercial 400400-11001066 Valve 321894-709 is a precision-engineered 8-inch double-actingThe Bray Commercial 400400 11001066 is a high performance 4 inch butterfly valve engineered for demanding HVAC and industrial fluid control applications. Featuring a 316 stainless steel body, this valve provides superior corrosion resistance and structural integrity compared to standard cast iron alternatives. Designed for resilient seated butterfly valve performance, it utilizes a lug style configuration, making it ideal for dead end service and