ACS Valves offers Quick-Clean series rotary airlock valves. The valves use an 8-vane rotor design and are available in 304 or 316 stainless steel, in sizes from 6 inches to 16 inches, pressure differentials up to 15 PSIG, and temperature tolerance up to 500 F, according to the company. Rotor configurations include: closed-end, metering, shallow-pocket, Teflon-coated and adjustable-tip. Adjustable rotor tips are available in stainless steel, hardened steel, or bronze, and interior surface coating options include hard chrome and Teflon.