The rotary-kiln incinerators are used by municipalities and by large industrial plants. This design of incinerators have two chambers a primary chamber and secondary chamber. The primary chamber in a rotary klin incinerator consist of an inclined refractory lined cylindrical tube. Movement of the cylinder on its axis facilitates movement of waste. In the primary chamber, there is conversion of solid fraction to gases, through volatilization, destructive distillation and partial combustion reactions. The secondary chamber is necessary to complete gas phase combustion reactions. The clinkers spill out at the end of the cylinder. A tall flue gas stack, fan, or steam jet supplies the needed draft. Ash drops through the grate, but many particles are carried along with the hot gases. The particles and any combustible gases may be combusted in an afterburner. To control air pollution, the combustion product gases are further treated with acid gas scrubbers to remove sulfuric acid and nitric acid emissions, and then routed through bag houses to remove particulates before the gases are released into the atmosphere.

Rotary leaf filters are actually in the form of a disk. The disks are rotated, immersing part of it in the slurry, just as part of the drum is immersed in the case of the rotary vacuum filter. As the immersed part of the disks emerge from the slurry pool into the air, the filtrate are continuously sucked by the vacuum resulting in a dry cake. In operation vacuum pressure is applied to each of the leaves. The feed slugde is then introduced at the feed inlet. The sludge creates a slurry pool inside the unit immersing the leaves. Through the action of the vacuum, the sludge is sucked into the filter cloth.

Rotary Level Indicator detects high and low levels of bulk granular solids in bins, tanks or silos.

Rotary lobe pumps employ timing gears to eliminate contact between the rotors, which allows their use on non-lubricating fluids. Various rotor forms are available, including bi-wing and multi-lobe options.  These pumps offer both sanitary/hygienic designs, which meet 3A and industrial designs with bearings on both sides of the rotors for higher-pressure capabilities.

Rotary-Lobe pumps are positive displacement pumps in which two rotating synchronous lobes push the fluid through the pump. Rotational speed and sharing stresses are low. For sludge pumping, lobes are made of hard metal or hard rubber. An advantage of using this pump is that the lobe replacement is less costly than rotor and stator replacement for progressive cavity pumps. These rotary pumps, like other positive displacement pumps must be protected against pipeline obstructions.