The BT Series from ACS Valves is a blow-through feeder/airlock. It is designed to ensure optimal bulk density and throughput of hard-to-convey materials like fine powders and flakes. The BT Series has a 8-vane rotary valve design and is suitable in applications requiring pressure differentials up to 20 PSIG. Other features include an outboard bearing design and an available ACS variable frequency drive. Housings are available in cast iron, or 304 or 316 stainless steel, in 8- or 10-inch round flange sizes.