Established 1936. Manufacture point and continuous level sensors, including paddlewheel, rf, tuning fork and weight cable technologies.

Manufacture mechanical toggle, pneumatic and vibratory presses for use in the refractories and building brick industries. Also manufacture complete line of cartridge and baghouse dust collectors.

Products and services include customized chute design, air-supported conveyors, dust management systems and conveyor components, including belt-cleaning systems, belt-tracking devices and transfer point sealing systems. Also supply air cannons and vibrators to improve material flow.

Established 1960. Sales subsidiary of parent company that manufactures heavy-duty portable industrial vacuum cleaners and high-filtration portable dust collectors and toxic material collectors. Specialize in fine and abrasive powder applications.

Design, engineer and provide solids-handling equipment and systems.

Established 1892. Manufacture heavy-duty central and mobile vacuum systems; separators for wet or dry collection; centrifugal and regenerative blowers; pneumatic conveying systems; vacuum systems accessories (hose, tool, tubing and fittings); and electrical control panels.

Design and manufacture industrial vacuums for brick, clay and ceramic-tile industries.

Established 1946. Manufacture dry bulk material-handling equipment, storage facilities, batch blenders and dense-phase pneumatic conveying equipment. Complete line of central vacuum systems.

Design and manufacture process equipment, including size reduction and classification, mixing and blending, air pollution control and pneumatic conveying systems. Operations include national sales network and engineering services capable of total systems design.