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This section provides an overview for orifices as well as their applications and principles. Also, please take a look at the list of 18 orifice manufacturers and their company rankings. Here are the top-ranked orifice companies as of July, 2025: 1.GMA Garnet Pty Ltd., 2.Beswick Engineering Co., Inc., 3.Airtrol Components, Inc..
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1985-2014: Worked for Alstom Corporation, ABB Corporation, and Gadelius Corporation, designing Jungstrom air preheaters and mechanical design of diamond soot blowers. (ABB Corporation: https://new.abb.com/jp)
2014-2021: Worked as an engineering and project manager at Alvos Inc.
https://www.linkedin.com/in/yoichi-hiroki-92192394/
An orifice plate is a thin metal plate with a perforation (hole) process that controls fluid flow and pressure when installed in a pipe.
There are four major types of orifice plates; concentric orifice, eccentric orifice, four-part circular orifice, and restricted orifice plates.
Concentric orifice plates are used in aperture flowmeters such as general differential pressure flowmeters.
Quadrant orifice plates are used when the flow rate in the piping is low and the Reynolds number is small. A Reynolds number is a dimensionless number that is the ratio of inertia force to viscous force.
Eccentric orifice plates are used when the fluid contains slurry (a mixture of solid particles and liquid). The slurry can flow easily by installing an orifice hole on the lower side of the pipe. The use of a deflection orifice plate is the same as that of an eccentric orifice plate.
When an orifice plate is installed in piping it is sandwiched between flanges and used as an assembly. Sometimes, like shock absorbers, orifice plates are used pre-assembled into products.
Orifice plates are used in a variety of flow and pressure control applications in industrial applications and industrial piping. As an example of differential pressure flowmeter use, an orifice plate is used to measure the flow rate of a fluid in a pipe as a differential pressure flowmeter. Fluid is extracted from the flanges before and after the orifice plate, and the differential pressure is converted into a flow rate and displayed on the indicator.
For the regulations when an orifice plate is used for flow measurement in this manner, refer to JIS Z 8762-2, methods of flow measurement by an orifice mechanism in a circular pipeline. Shock absorbers take advantage of the high pressure drop across the orifice plate. The smaller the orifice hole diameter, the higher the fluid pressure drop and the greater the damping force of the shock absorber. Conversely, a larger hole diameter results in a smaller damping force.
To briefly explain the orifice plate principle, the fluid pressure is lower downstream of the orifice than upstream of the orifice based on Bernoulli's theorem because the orifice hole's inner diameter is smaller than the pipe's inner diameter where the orifice plate is installed. Bernoulli's theorem is a law of conservation of energy in fluid flow. When a fluid passes through a small hole in an orifice, a pressure difference occurs before and after the orifice in the pipe. This is due to Bernoulli's law, which states that pressure energy, velocity energy, and potential energy are always constant in a pipe.
The fluid immediately after passing through the orifice plate has a higher velocity and the velocity energy increases. If the potential energy is the same, then the pressure energy decreases by the same amount as the velocity energy increases. By measuring this difference in pressure before and after the orifice plate, the flow rate of the fluid can be calculated. When an orifice plate is used to regulate flow or pressure, the flow rate downstream of the orifice plate can be determined based on the following equation:
*Including some distributors, etc.
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GMA Garnet Group (GMA), established in 1988, and headquartered in Texas, is a manufacturer of garnet abrasive, waterjet cutting, and protective coatings. The company offers waterjet cutting products, including GMA ExcelCut (for thicker and harder material), ProCut (for high-volume operation), ClassicCut (for all-purpose), and MicroCut (for small and close tolerance parts). The company also produces rare earth minerals, including Hafnium (Hf), Scandium (Sc), and Monazite (Ce). It has two mines and eight processing plants in Asia Pacific, Europe, the Middle East, and America.
Rheem Manufacturing Company, established in 1952, and headquartered in Georgia, is a manufacturer of heating, cooling, and water heating equipment. The company’s products include air filters, water heater thermostats, compressors, refrigerant components, and accessories. It also introduces the ecoNet Smart Thermostat with energy savings features. The company received the Green Builder Sustainable Products of the Year and Energy Star Award in 2023, and the Innovation Award in 2022. It has over 500 patents, 22 manufacturing plants, and does business in over 88 countries.
Accustream, is a manufacturer of waterjet cutting equipment and accessories, established in 2011 and headquartered in Minnesota. The company offers waterjet pump parts, valve parts, nozzles, cutting heads, gauges, etc. It also offers high-pressure tubing and fittings. It also provides DynaMAX waterjet pumps and abrasive waterjet pots. Besides selling waterjet parts, the company also introduces Pronest Nesting Software, which enables users to arrange waterjet parts quickly. For technical support, the company offers on-site technical services and Mobile apps for Android and iOS. The mobile apps will help the customers to find the right part guide and solve the error codes.
Sigler, Inc. was established in 1950 in Tolleson, Arizona, USA, as a manufacturer of residential and commercial HVAC products and solutions. The product list of the company encompasses Infinity 18 SEER Variable Speed Heat Pump Condensers, 38AUQ Gemini Commercials, and Split System Heat Pumps, among others. The products provide energy-efficient heating and cooling solutions for residential and commercial use, ensuring comfortable indoor environments while minimizing energy consumption and serving large commercial spaces to optimize comfort and energy efficiency. The company serves various industries, including HVAC, residential and commercial building management, industrial climate control, and the construction sector.
Airtrol Components, Inc was founded in 1977 and is headquartered in New Berlin, Wisconsin. The company is a manufacturer of precision miniature pneumatic components used in light-to-medium duty applications that require small, lightweight precision components. Many customers such as NASA are in the medical, dental, aerospace, and process control or automation industries. The companies key products categories include switches including Air Valves, Precision Orifices including needle valves and barbed fittings, and Regulators, Valves & Comparators which include pressure regulators and relief valves.
Beswick Engineering was founded in 1964 as an engineering consulting firm. Beswick now operates out of Greenland, New Hampshire. Berwick serves the medical devices, aerospace, analytical instruments, bomb, gas, & narcotic detection equipment, semiconductor, dental, hydrogen fuel cell, industrial robot & automation, inkjet, 3D printing, and packaging & food packaging machinery industries. Beswick offers tubing, tubing clamps, cylinders, compression fitting accessories, filters, mufflers, breathers, orifice restrictors such as drilled orifice fittings and sapphire orifice fittings, valves, regulators, and quick disconnects. Beswick also offers custom design options.
Industrial Specialties Manufacturing (ISM) was founded in 1982 in Denver Colorado. is an ISO 9001 company that supplies miniature pneumatic, vacuum, and fluid circuitry components to OEMs and distributors all over the world as well as providing custom solutions. The company serves distributors and offers not just sales but also marketing and logistics support with closed-loop feedback. Some of the types of products ISM offers include plastic fittings, customized fittings, sub-assemblies, and custom heat seal tooling.
Central States Industrial, founded in 1977, is a distributor of sanitary processing equipment and installation material. The equipment includes valves, mixing & ingredient addition, heat exchange, filters & strainers, and corrosion-resistant supper alloys used in chemical, biotech, brewery, dairy, and pharmaceutical industries. The Springfield, MO, company provides custom equipment such as utility stations, pump carts, hot water sets, valve manifolds, and holding tubes. The company offers installation, maintenance services, fabrication, pump repair, and industrial refrigeration capabilities.
Mill City Roasters is a supplier of coffee roasters, roaster parts and accessories, coffee grinders, etc., established in 2013, and located in Minnesota. The company offers manual and digital control coffee roasters, ranging from 500 grams to 60 kg capacity. It also provides roast color analyzers, which allow customers to classify the roasting degree. The company targets business owners, whole bean buyers, mini markets, cafés, etc. It also supports new business owners by conducting workshops and seminars where customers can get hands-on experience with the machinery.
Marshall W. Nelson & Associates, Inc. is a supplier of combustion equipment, gas burner, gas regulator, etc., established in 1958, and located in Milwaukee, Wisconsin. From air heating burners to electric steam boilers, the company supplies over 300 products in its showcase. It supplies items from brands such as Honeywell, Siemens, Asco, Reimers, etc. It also provides engineering services, system repairs, calibration, assemblies, and training. Markets served by the company are automotive, oil and gas, power generation, pulp and paper, etc.
Oil-Air Products began in 1983 and is based in Plymouth, Minnesota. OAP is a distributor of fluid power systems and offers other services. Product listings include measurement instrumentation, pneumatics, custom manifolds, power units, lubrication, pumps, motors, valves, planetary gearboxes, accumulators, flow meters, and pumps. Other services include custom system design, hose assembly fabrication, troubleshooting, and component selection, as well as machine and part inspection and either on-site or inhouse repair options.
KROHNE Group began in Duisburg, Germany in 1921 as a producer of variable area flowmeters. Today KROHNE isa a provider of industrial measurement products, solutions, and services. KROHNE services the chemical, food & beverage, life sciences, marine, metal & mining, nuclear, oil & gas, power generation, pulp & paper, water & wastewater, and sustainable energies industries. KROHNE product lines include tools for flow, level, temperature, and pressure measurement as well as process analytics and smart flow control. KROHNE offers full solutions for flow metering, monitoring, and wireless and remote metering applications.
Arthur Grillo GmbH is a manufacturer of building automation control systems that was established in North Rhine-Westphalia, Germany, in 1901. The company produces temperature sensors, differential pressure sensors for measuring and controlling air or gas flow, and venturi tubes for measuring and controlling fluid flow. It also offers control cabinet technology products such as power supplies, switches, and relays. The company’s products are used primarily by clients in the industrial automation, robotics, and semiconductor industries.
Prisma Instruments is based in Aubagne, France, and is a manufacturer of regulation and measurement equipment that was established in 1976 before its acquisition by Gauge Bourdon France in 2016. The company’s product lineup includes temperature monitoring instruments such as probes and thermometers, pressure monitoring equipment such as mechanical pressure gauges and transmitters, and ultrasonic as well as electromagnetic flow instruments. The company is ISO 9001 and ISO 14001-certified, and mainly serves clients in the industrial processing sector.
The Lee Company was founded in 1948 and is headquartered in Westbrook Connecticut. The company manufactures flow metering, fluid pumping, and related products for industries such as aerospace, automotive, power generation, and medical equipment to customers around the world through its global distribution network. The company’s primary product lines include valves, flow restrictors, pumps, and plugs. The company also offers customized products for individual markets to meet specific standards for each industry according to individual customer needs.
Bird Precision is a manufacturer and supplier of microminiature components and assemblies such as precision orifices, nozzles, and restrictors for the hydraulics and pneumatics industries. Bird Precision is a precision glass jewel manufacturing plant in the United States, founded by Richard H. Bird in 1913 and later joined by Randall P. Cameron, Sr. The company’s line of products includes precision orifices, orifice connectors and fittings for stainless and plastic tubing, filters, and jewel bearings.
Sibata Scientific Technology Ltd, founded in 1921 at Saitama, Japan is a manufacturer of environmental measurement and occupational health measurement equipment. The company with global clientele produces various scientific measurement and analysis equipment that can range from lab glassware to synthetic reactors. The products line comprise of general lab equipment, extractor, synthetic reactor, Rotary Evaporator and Glass tube oven. These products are used in applications such as occupational safety, food hygiene, water hygiene, hospital and chemical plants as well. The products are ideal for testing quality, measuring dust, precise heating & cooling, personal exposure measurements and many more with more reliability.
Ranking as of July 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | GMA Garnet Pty Ltd. |
15.2%
|
| 2 | Airtrol Components, Inc. |
8.4%
|
| 3 | Beswick Engineering Co., Inc. |
8.1%
|
| 4 | Industrial Specialties Mfg., Inc. |
7.4%
|
| 5 | Sigler, Inc. |
6.7%
|
| 6 | Accustream |
6.1%
|
| 7 | Bird Precision |
6.1%
|
| 8 | Central States Industrial |
5.4%
|
| 9 | Lee Company |
5.1%
|
| 10 | Rheem Manufacturing Company. |
4.7%
|
Derivation Method
The ranking is calculated based on the click share within the orifice page as of July 2025. 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
|
11 | 73.3% |
|
Japan
|
2 | 13.3% |
|
Germany
|
2 | 13.3% |
27 products found
27 products
Aoyama Kogyo Co., Ltd.
360+ people viewing
Last viewed: 1 day ago
The orifice plate is installed between the pipe flanges to create a pressure differential. Benner and D-D/2 taps detect differential pressure by at...
Aoyama Kogyo Co., Ltd.
270+ people viewing
Last viewed: 15 hours ago
Orifice ring ASS'Y is used for relatively low pressure lines and is inserted into the pipe flange. Consists of a ring with a differential pressure ...
Sannikki Co., Ltd.
320+ people viewing
Last viewed: 8 hours ago
■Summary A variable orifice valve (flow rate adjustment valve) is a valve that allows you to easily adjust the flow rate of pressurized fluid in a ...
Aoyama Kogyo Co., Ltd.
280+ people viewing
Last viewed: 20 hours ago
It consists of a flange with a differential pressure outlet, an orifice plate (AOP), bolts, nuts, and gaskets. The orifice flange is attached to th...
Sannikki Co., Ltd.
250+ people viewing
Last viewed: 1 day ago
■Summary A variable orifice valve (flow rate adjustment valve) is a valve that allows you to easily adjust the flow rate of pressurized fluid in a ...
Toray Precision Co., Ltd.
180+ people viewing
■ Finish holes smoothly with good precision to provide high-quality products It is used to restrict light and fluid, and to control flow rate. Aper...
TAIYO Co., Ltd.
250+ people viewing
Last viewed: 15 hours ago
A made-to-order product series that provides the optimal orifice design based on customer specifications. ■Features ・Knife-edge orifice shape is ...
TAIYO Co., Ltd.
250+ people viewing
Last viewed: 11 hours ago
Porous orifice. ■Features ・Shock absorber with impact energy of 353J or less. -Easy to adjust to changes in collision load energy by simply opera...
TAIYO Co., Ltd.
330+ people viewing
Last viewed: 1 day ago
Soft contact reduces impact value. Industrial mini softer that uses a tapered tube system. ■Features ・Achieves soft contact with tapered tube str...
TAIYO Co., Ltd.
290+ people viewing
Last viewed: 4 hours ago
Porous orifice type shock absorber that does not require adjustment. ■Features ・No orifice adjustment required. ・Softly stops colliding objects ...
TAIYO Co., Ltd.
300+ people viewing
Last viewed: 2 hours ago
A made-to-order product series that provides the optimal orifice design based on customer specifications. ■Features ・Knife-edge orifice shape is ...
TAIYO Co., Ltd.
270+ people viewing
Last viewed: 6 hours ago
A made-to-order product series that provides the optimal orifice design based on customer specifications. ■Features ・Knife-edge orifice shape is ...
TAIYO Co., Ltd.
260+ people viewing
Last viewed: 15 hours ago
A made-to-order product series that provides the optimal orifice design based on customer specifications. ■Features ・Knife-edge orifice shape is ...
TAIYO Co., Ltd.
270+ people viewing
Last viewed: 2 hours ago
A made-to-order product series that provides the optimal orifice design based on customer specifications. ■Features ・Knife-edge orifice shape is ...
TAIYO Co., Ltd.
260+ people viewing
Last viewed: 4 hours ago
Porous orifice. ■Features - One size larger type compared to the 06 series. ・Ideal for work with relatively large energy capacity due to changes ...
TAIYO Co., Ltd.
250+ people viewing
Last viewed: 23 hours ago
Porous orifice. ■Features ・One size larger than the 11 series. ・Ideal for work with relatively large energy capacity due to changes in moving lo...
