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This section provides an overview for rotary valves as well as their applications and principles. Also, please take a look at the list of 35 rotary valve manufacturers and their company rankings. Here are the top-ranked rotary valve companies as of December, 2024: 1.Rotary Airlock LLC, 2.Prater Industries, INC., 3.ROTOLOK USA.
Table of Contents
Engaged in research on nitride semiconductor growth using the MBE method at Waseda University Graduate School. After graduating from graduate school in 2016, he joined a non-ferrous metal manufacturer.
Engaged in equipment maintenance and engineering work at metal smelting plants. Moved to a chemical manufacturer in 2022. Engaging in similar tasks.
A rotary valve is a valve that controls the amount of fluid or powder cutout.
Pneumatic conveying using compressed air is mainly used for conveying powder, but it is necessary to supply a fixed quantity to prevent clogging. However, unlike liquids and gases, the amount of powder cannot be controlled by the opening of a valve, so the cutout volume is controlled by a rotary valve.
Rotary valves are very commonly used in the powder industry, but their disadvantage is that they are large and heavy due to the need for continuous rotation.
Rotary valves are used in industrial equipment. Their main purpose is to control the amount of material cut out.
Specific applications are as follows:
Rotary valves are used for feeding powdery materials. They are installed at the bottom of hoppers of pneumatic conveyors and before feeding into agitators. They should be used to control the feed rate, especially for grinding mills, which can become clogged if a large amount of powder enters the mill.
Rotary valves have a different structure from ordinary valves. Inside the valve, there is a rotor with blades, and each blade is divided into sections. As the rotor rotates, it continuously discharges the powder that has accumulated in the partitioned areas. The amount of material discharged can be controlled by the valve size, the number of rotor blades, and the number of rotations.
When the rotor and case come into contact with each other inside the machine, they scrape off each other and mix into the material. This is called contamination. Since this is a major problem in the food industry, countermeasures such as the use of large clearance blades are taken. A magnet can also be installed under the rotary valve to prevent contamination.
Rotary valves require a drive source. Most of them use motors. Therefore, the cutout volume can be adjusted by variable frequency devices such as inverters.
Because the material to be handled by the rotary valve is a powder, clogging may occur. Therefore, clogging countermeasures are mandatory in many cases. Clogging frequently occurs when the powder is sticky. Clogging can also occur when moisture is absorbed during the powder handling process or when lumps that have stuck to the primary side are fed in at once.
Effective countermeasures are to use raw materials with low viscosity or to dry them in the pretreatment process. Another measure is to install a vibrating motor, called a vibrator, to prevent powder from sticking to the primary side of the rotary valve. If the raw material absorbs moisture, measures such as installing tress piping to keep the powder warm can also be taken.
In some cases, the powder may gradually stick to the partitions between the blades of the rotary valve. Some models are equipped with scraper blades. By employing these, it is possible to scrape out the powder so that it does not remain in the partition.
The following are the general maintenance items for rotary valves:
For models with a scraper attached, maintenance of the scraper shaft and replacement of gears are also included.
In case of overhaul, the following deterioration diagnosis is also performed:
Since the gap between the rotor and casing has dimensions designed by the manufacturer, it is important to check the dimensions from the case to the shaft end before disassembling. Failure to do so may cause contamination due to contact between the case rotor and scraper.
*Including some distributors, etc.
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Prater Industries, INC. is based in Bolingbrook, Illinois, USA, and is a manufacturer of particle processing equipment originally established in 1925 before being acquired by Industrial Magnetics, Inc. in 2014. The company produces a wide range of equipment used for particle separation, feeding,and size reduction. These include rotary airlock valve feeders, fine grinders for processing materials into powders, and air classifying mills that can sort particles by density or shape. The company also offers product customization and design, along with testing preventative maintenance services. Its products are used by clients in the cosmetics, mining, and pharmaceutical industries.
Rotary Airlock LLC is an American rotary valve manufacturer established in 1995 and based in Rock Falls, Illinois. The company produces fabricated rotary valves and adjustable direct drives as well as seals and bearings for airlock systems. It possesses CNC machining capabilities and offers reconstruction and reengineering services of its own systems and those produced by other OEMs. The company’s MAP seals are USDA compliant and its CFL bearing systems are NFPA-69 compliant.
Carolina Conveying, founded in 1999 and headquartered in Canton, NC, is a specialized manufacturer of powder handling components and material handling systems. Its product line includes rotary airlock valves, diverter valves, gate valves, silo dischargers, and screw feeders, catering to industries like food, chemicals, plastics, pharmaceuticals, and energy. These products are custom-designed to meet precise application requirements. Its systems are engineered to meet the complex demands of various sectors, enhancing system integration and operational effectiveness.
Nederman Corporation is a environmental technology products supplier founded in 1944 in Helsingborg, Sweden and operating in Leeds, in The United Kingdom since 1978. The company offers a variety of products, solutions and services for industrial air filtration, such as aerosol extraction, combustible dust or even oil mist filtration. It serves multiple kinds of entities, for example: fire and emergency stations, laboratories, and automobile, welding and thermal cutting, and woodworking facilities, and more. The firm is also sustainability driven, and is ISO 14001 and ISO 9001 certified.
Donaldson Company, Inc. is a manufacturer headquartered in Hennepin County, Minnesota, specializing in filtration technologies. The company was established in 1915 when Frank Donaldson Sr. invented an air cleaner for farm tractors. Today, Donaldson offers filtration products and solutions, including bulk tank filtration systems and engineered air intake systems designed for gas turbines and industrial compressors. Additionally, the company provides engine filters and parts, along with Internet of Things (IoT) services to monitor and maintain filtration equipment. Donaldson's products find application across a wide range of industries, including aerospace and defense, agriculture, construction, manufacturing, and transportation.
Pelletron Corporation, founded in 1987 at Lancaster, Pennsylvania is a manufacturer of bulk materials handling technology intended towards conveying and dedusting of granular substances. The company since inception specializes in bulkmatology that especially deals with plastic manufacturing, processing and various other industries. Tackling hundreds of free Deduster tests yearly, they ensure removal of dust and streamers causing defects and are useful for intruders as well as small infection molders. They make engineered conveying systems, DeDuster systems and other rotary and diverter valve components for DeDusting test, spare parts program, engineering studies and Toll cleaning services.
Magnum Systems Inc, founded in 1960 at Kansas, USA is a manufacturer of integrated automation systems of bulk handling dry materials. The company, previously known as Smoot or Taylor Products company manufactures equipment that serves dealing with grain, sugar, flour, plastic pellets, sand and granulate chemicals when it comes to bulk handling. From storage & handling, feeding & conveying materials to blending, mixing & shifting industries, these equipment help in low-energy consumption, faster and easier carrying and assists lines moving from rail to pallet. They are used in industries such as food & ingredients, chemical, plastics, agricultural feed and industrial minerals.
Rotolok USA, founded in 1982 at North Carolina, USA is a manufacturer who makes rotary valves and technologies for making valves in powder and bulk materials industry. The company started in 1973 in the UK, specialize in the material bulk handling equipment industry and their proprietary technique offers efficiency and durability. They make products such as NFPA rotary airlock, BLO-THRU rotary airlock, OFFSET airlock, Pneumatic conveying diverter and Cast Rotoslide. These are used in feed processing, food processing, mining & minerals, plastics and pharmaceutical industries. They assist from the manufacturing to distribution allowing hygienic to the maintenance process.
Sunco Inc, operating since 2015 at South Carolina, USA is a manufacturer of material handling valves and components for heavy industries. The company with a 30,000 square foot workshop manufactures rotary airlocks, diverter valves, gate valves, dump valves and blower packages. Their clientele comprises Dominos, Cargill, Bayer, Wayerhaueser and Kimberly-Clark. From holding and moving bulk bags, shifting granules and suctioning machines, they use integration of pressure differential and airflow from a blower to carry bulk materials in a factory or an industrial site. Scales and weighers, metal cutting and forming services, flow instrumentation and plastic molding processes are also offered.
The Young Industries Inc., is a global manufacturer of bulk industrial handling equipment established in 1960 at Muncy, Pennsylvania. The company started operating in 1947 by Henry T Young in the agricultural industry but since 1960 started making products such as rotary valves, diverter valves, conveyors, bulk bag unloading systems and self-assigning flange sets. They also specialize in dust control systems such as Uni Cage Filter collectors. The products are used in granular as well as free-flowing substance industries such as mining, construction, agriculture along with logistics. These equipment help in carrying them off while manufacturing, distribution and disposal.
Dust Collector Services, or DCS, is a family-owned business founded in 1994 and based in Anaheim, California. DCS designs manufactures and installs a wide range of materials serving woodworking, tooling, manufacturing, and other industries. DCS's new product line includes various types of dust collectors, mist collectors, high vacuum systems, explosion protection equipment, and ducting. DCS also has a range of used equipment. DCS provides services including baghouse inspection and regular maintenance of machinery.
U.S. Air Filtration, Inc. has been a supplier of dust collectors and replacement parts since 1987, based in Tyler, Texas, USA. The company provides comprehensive solutions for dust collection needs across diverse industries such as steel, cement, woodworking, mining, pharmaceuticals, food, and more. Their air pollution control systems maintain plant hygiene, safety, and optimal performance. They offer a diverse range of services, including dust collection design, inspections, change-outs, and conversions to meet their client’s emissions requirements. Their team of experts maintain a clean and safe work environment free from fumes, powder paint, dust, or industrial processing.
DI MATTEO Förderanlagen GmbH & Co. KG is a German ISO 9001 certified manufacturer of industrial conveyor systems founded in 1994 and based in Beckum, North Rhine-Westphalia. The company produces various mechanical as well as pneumatic conveyor systems, feeders, and mixers. It also offers project consultation, customization, and training services for customers requiring additional support. The company serves clients in the lime and cement processing, waste management, and glass manufacturing sectors.
Kongskilde Industries was established in 1949 and is located in Soro, Denmark is a manufacturer of customer-specific pneumatic conveyance, and material handling products. The company offers a range of products, including high-pressure blower with a low noise level for pneumatic systems, compact unit with a bag, and rotating separator for the removal of small-size waste from production lines. These products are utilized in feeding granulates into a pneumatic conveying line, waste collection unit for trimming waste, and cleaning of plastic regrind to be re-used in the production line.
Hefei Teclion Machinery Technology Co., established in 2011 and headquartered in Hefei City, China, is a bulk material conveying equipment and component manufacturer and supplier. The company's products include rotary valves for granular products, diverter valves for pneumatic conveying, and complete feeding stations supplied with a rotary valve, feeding shoe, and support stand. It also provides custom-designed equipment and components to meet the requirements of various harsh working conditions, such as handling sanitary-grade and explosion-proof-grade products. These products are used in various industries, including food processing, chemical processing, and agriculture.
Shandong Zhangqiu Blower Co., Ltd., established in 1968 and based in Jinan, China, is a manufacturer of blowers and fans. The company also produces various products such as screw blowers, centrifugal blowers, industrial pumps, liquid ring vacuum pumps, and turbo blowers. The company has been awarded with the ISO9001 and ISO14001 certificates. The blowers are made with American technology to meet the EU and North American standards. All the products are used in various applications, such as wastewater treatment, zinc plating, paper making and printing, and air combustion.
Gericke AG, founded in 1894 and headquartered in Regensdorf, Switzerland, is a manufacturer of power processing products. The company specializes in the manufacturing of powder processing equipment, pneumatic conveying systems, and bulk material handling systems. The products are designed to enhance production processes by ensuring the efficient handling and processing of powders and bulk materials. These products are important for precision, stability, and ability to improve productivity while maintaining product quality. It serves a comprehensive array of industries, including food, pharmaceuticals, chemicals, and plastics, where the accurate and hygienic handling of materials is crucial.
SAUTELMA ROTOLOK, established in 1964 and based in Éguilles, France, is a manufacturer and supplier of industrial weighing and feeding equipment. The company's product portfolio includes MINI belt weigh feeders, belt scales, and pneumatic vacuum transfer systems. These products find application in various industries, including water treatment, energy production, and the food and beverage industry. The company also provides services including training, spare parts supply, and technical support. The company is ISO 9001/2000 certified with exports to various countries, including the United States, Brazil, and Japan.
WAM Japan was established in 2005 and, based in Japan, is a manufacturer of power-handling equipment. The company produces products such as screw conveyor feeders, rotary valves, farming and biogas equipment, energy-related equipment, and mechanical conveyor. All its products are used in different applications, including wastewater treatment plants, livestock farming, sewage, renewable energy, and recycling sites. The laboratory has equipment and accessories to perform mixing, feeding, and metering tests with different materials. WAMGROUP’s Corporate R&D department supervises the test facility of the company.
TSUKASA INDUSTRY CO.,LTD, established in 1946, is an ISO 9001 certified manufacturer of powder equipment, and is based in Handa City, Aichi with subsidiaries in China and Thailand. The company offers various products, including Crushing Equipment, Mixers like the PowMixer Rotary Model Container Detachable System designed for mixing, transportating, and storing of high quality and fragile powders such as pharmaceuticals, functional foods, and crystals, Line Strainers, and the Magcap which can be installed at the inspection port of chute conveyance pipes to remove magnetic foreign materials.
DWA GmbH & Co. KG, established in 1984 and based in Ubstadt-Weiher, Baden-Württemberg, Germany, is a manufacturer specializing in dialysis water treatment systems. The company primarily produces reverse osmosis systems for the water supply of dialysis centers or single-place units in intensive care wards. It also offers water treatment systems for establishing an ultrapure water supply, or concentrate supply systems for the diluted distribution of acid concentrates. The company is ISO 9001:2015-certified, and serves clients in the healthcare sector.
Deenpu Machinery Equipment Co., Ltd. is a manufacturer of oil and gas drilling equipment, headquartered in Yancheng City, Jiangsu Province, China. The company's product offerings include plug valves, pup joints, hydraulic power units, as well as remote control panels, and hammer unions. These products meet or exceed API 6A, 16A, 16C, 16D, and 20E specifications. Its manufacturing facility spans over 20 acres, with manufacturing buildings covering 600,000 square feet, housing state-of-the-art processes.
Coperion was founded in 1879 and is headquartered in Stuttgart, Germany. The company is a manufacturer of the machines and systems used in the recycling, food, pharmaceutical, plastics, and other industries. The company has five business platforms: Extruders & Compounding Machines, Process Equipment, Plants & Systems, Service, and C-Beyond. Extruders & Compound Machines include conveying systems, palletizers, and extruders that sort and dry materials for pharmaceuticals, food, and recycling. Process equipment includes valves, mixers, and product feeders. Plants & Systems include larger machines and complete plants. Services and C-Beyond help customers maximize product, machine, and system utility.
JAUDT Dosiertechnik Maschinenfabrik GmbH, established in 1951 and headquartered in Germany, is a manufacturer of bulk material handling equipment. The company specializes in the mechanical engineering sector, offering an extensive range of products, including butterfly valves, double shuttle valves, and silo blasters. These products are essential for many industries, such as construction, environmental technology, and the chemical sector. The company also offers customizable filter feeders and valve options and produces ATEX and ExZü equipment, ensuring safety in potentially explosive environments.
Ventilazione Industriale Srl is a manufacturer of air treatment and purification products that was established in 1972 in Lissone, Italy. The company’s products include activated carbon filters, catalytic combustors for removing smoke from industrial processes, and scrubbers equipped with venturi cones or filling bodies. It also offers custom design, production, and installation of air purification by customer specifications. The company’s products are commonly used by its clients in the chemical, pharmaceutical, and metalworking industries.
ACS Valves, established in 2022 and headquartered in Ontario, Canada, is a manufacturer of rotary valves for bulk material processing and pneumatic conveying applications. The company specializes in designing, engineering, and manufacturing rotary valves for food processing, pet food, and minerals industries. Its rotary valve products, such as feeder and airlock valves, optimize the material throughput and process efficiency. With CNC-machining, NFPA compliance features, and customizable configurations, the company offers rotary airlock valves tailored to bulk material processing needs. It also provides complete pneumatic conveying systems and safety tips for handling static, dust, and fire hazards in material processing environments.
Scheuch Components GmbH, established in 1963 and headquartered in Aurolzmünster, Austria, is a manufacturer and supplier of industrial equipment. The company's solutions include radial fans used for industrial ventilation systems, customized soundproofing solutions for industrial halls, and modular Odor Emission Control OEC filters. These products are used primarily in industrial plants to control emissions and maintain air quality. Its services include complete system commissioning, assembly, and installation, and it offers ongoing maintenance and inspection service contracts with spare part supplies available.
Sangati Berga S.A., established in 1992 and headquartered in Ceará, Brazil, is a manufacturer of technologically advanced equipment for the wheat and corn milling sectors. The company's product line includes mills, rice improvement equipment, feed factory equipment, and more. It also offers maize equipment and port facilities equipment. Its product allows distribution all over the aspiration duct, and the product blade thickness is adjustable. The company has been certified according to ISO 9001:2015 by the British Standards Institution. It serves various industries such as wheat and corn milling sectors, animal feed factories, facilities for cereal, and rice improvement.
Tiermax is a Toronto, Ontario-based company that serves as an equipment supplier for processing equipment and material handling systems in the sectors of food, chemical, plastic, environmental and mineral, and water treatment. The company offers different products specific to each sector, but standard products include feeding & dosing, bulk material handling, extrusion & compounding, and filling and bagging machines. The company partners with other manufacturing and design companies such as MF Techno for weighing, and wrapping bulk products, Köllemann for screw conveyors and related products, and NAKANIN for high-performance rotary piston pumps.
Important Papers, Inc. was founded by Ruth Barnett in South Jersey in the early 1990s. Important Papers is a distributor of promotional items and custom apparel for company promotion. Examples of Important Papers, Inc. promotional items include: apparel such as t-shirts, office wear, outerwear, bottoms, sunglasses, and activewear; headwear such as caps, hats, beanies, visors, safety items, and bandanas; bags such as tote, backpacks, office & school, outdoor & fitness, and travel; drinkware, fun, health, office, tech, writing, and other miscellaneous items.
Rotolok Holdings Group, founded in 1973, is a manufacturer headquartered in Tiverton, Devon, United Kingdom, producing rotary valves and other material handling equipment. The company’s products include rotary valves, commonly used to regulate the flow of dry powder or granular materials, and slide and control valves, typically used in gravity feed applications. It also offers diverter valves for rerouting granular, pellet, and powder materials. These products find applications in various manufacturing settings, such as food processing, mining, and power generation.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Rotary Airlock LLC |
8.8%
|
| 2 | Prater Industries, INC. |
8.0%
|
| 3 | Donaldson Company, Inc. |
5.6%
|
| 4 | ROTOLOK USA |
5.2%
|
| 5 | Coperion GmbH |
5.2%
|
| 6 | Nederman Corporation |
4.8%
|
| 7 | Sunco Inc. |
4.8%
|
| 8 | Magnum Systems Inc. |
4.4%
|
| 9 | Carolina Conveying |
4.0%
|
| 10 | FLSmidth, Inc. |
4.0%
|
Derivation Method
The ranking is calculated based on the click share within the rotary valve page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
12 | 46.2% |
|
Germany
|
3 | 11.5% |
|
China
|
3 | 11.5% |
|
Japan
|
3 | 11.5% |
|
Denmark
|
1 | 3.8% |
|
Switzerland
|
1 | 3.8% |
|
France
|
1 | 3.8% |
|
Canada
|
1 | 3.8% |
|
United Kingdom
|
1 | 3.8% |
68 products found - Page 2
68 products - Page 2
Aisin Sangyo Co., Ltd.
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