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This section provides an overview for conversion fittings as well as their applications and principles. Also, please take a look at the list of 14 conversion fitting manufacturers and their company rankings. Here are the top-ranked conversion fitting companies as of December, 2024: 1.COLD HOSE, 2.Don Brown Bus Parts, 3.Scott Equipment Co., Inc..
Table of Contents
A conversion fitting is a type of fitting that connects, redirects, and branches pipes of different types.
Pipes are made of different materials, such as alloy steel pipe, stainless steel pipe, aluminum pipe, copper pipe, polyethylene pipe, and each material is used according to the type of fluid to be transported, the purpose of transport, and the environment surrounding the pipe. However, conversion fittings are used in situations such as when pipes of different materials are used inside and outside a building, or when different types of pipes are connected to existing pipes during renovation work, etc.
In addition, there are situations where different types of threads are connected using the screw-in method, which is one of the connection methods of fittings. Fittings used in such situations are specifically referred to as screw conversion fittings.
Conversion fittings are used to connect pipes of different materials or with different types of threads in piping used to transport gases, liquids, etc.
Conversion fittings are used to connect dissimilar pipes in a wide range of fields, including water supply facilities, hot water supply facilities, drainage pipes, sewage pipes, ventilation pipes, gas pipes, circulating fluid temperature control facilities, fire prevention pipes, vacuum pipes, agricultural water pipes, and chemical plant pipes.
In particular, copper pipes with strong antibacterial properties have long been used in water supply and hot water facilities, but in recent years, stainless steel and polyethylene pipes are often used, and conversion fittings are increasingly being used to connect existing copper pipes.
When using conversion fittings to connect pipes of different materials, especially when connecting pipes of different metals, it is necessary to consider corrosion caused by contact between the different metals.
When metals with different ionization tendencies come into contact with each other in an electrolyte such as water, a potential difference is created between them, with the base metal with the higher ionization tendency becoming the anode and the noble metal with the lower ionization tendency becoming the cathode, forming a battery. Metal ions with a positive charge flow out from the anode side of the battery, and the anode side (base metal side) is corroded. This phenomenon is called dissimilar metal contact corrosion (galvanic corrosion).
For example, when connecting stainless steel and copper pipes, there is almost no potential difference between the two types of piping because they have the same ionization tendency. Therefore, there is no problem even if stainless steel and copper pipes are in direct contact.
On the other hand, when stainless steel and brass pipes are connected, the zinc in the brass has a high ionization tendency, so connecting these two types of piping forms a battery due to the potential difference between them, causing galvanic corrosion of the brass.
To prevent this, conversion fittings must be electrically insulated. Forms of insulation include the flange type with insulating bolts, the insulated union type, and the screw-in type with insulating material attached to the threaded part.
*Including some distributors, etc.
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Hy-Lok USA, Inc., established in 1977 and headquartered in Stafford, Texas, USA, is a manufacturer and supplier of fluid and gas control solutions. The company’s main products encompass a comprehensive range of quality instrumentation valves, fittings, and connectors used in critical applications across industries such as oil and gas, petrochemical, and semiconductor manufacturing. For their engineering excellence, Hy-Lok USA plays a pivotal role in ensuring dependable and particular fluid handling, contributing to operational efficiency and safety. As a manufacturer and supplier, they are loyal to delivering advanced solutions that meet the intricate requirements of modern industrial processes.
Power Drives, Inc., established in 1946 and located in Buffalo, New York, USA, is a manufacturer of industrial automation products. The company specializes in designing, producing and distributing pneumatic and hydraulic components, assemblies and systems. The company provides OEMs with tube assemblies and engineered hoses, right from building the prototypes to the final products. The company also has five Express Hose Centre locations, for on-site fabrication processes. The company is engaged in producing and distributing products for industrial fluid transference and treatment.
Scott Equipment Co. Inc., headquartered in Louisiana, USA, is a manufacturer of industrial processing equipment since 1939. The company provides a wide range of products, including robotic solutions, pneumatics, electrical, hydraulics, and more. The company offers Kassow robots and precise automation robots for various tasks, such as welding, painting, and assembly. The company also provides added services, such as a line card, which lists all the products and services offered, and SEC (Scott Equipment Company) essentials programs, which offer various programs to help customers learn more about its products and services.
Nihon Pisco Co. Ltd., founded in 1976 and based in Nagano, Japan, is a manufacturer and distributor of pneumatic equipment and is ISO 9001 and ISO 14001 certified. The company stocks various products like valves, actuators, and vacuum accessories used in several industries, including semiconductor, medicine, and rechargeable battery. The company started selling push-in fitting for pneumatic piping in 1977 and launched the industry’s first push-in fitting built-in type speed controller in 1981. In 1993, it launched a few products, including a quick exhaust valve, a digital pressure sensor, and a vacuum generator with a digital pressure sensor.
Fujikin was founded in 1930 and headquartered in Itachibori Nishi-ku, Osaka, Japan is a manufacturer of specialized valve equipment. The company offers a wide variety of valves including Ultra-precision valves for semiconductor manufacturing, Cryogenic ultra-precision valves for space exploration, Aseptic process valves for pharmaceutical and food manufacturing, valves for new energy and rechargeable batteries, and valves for nuclear power plant instrumentation. Additionally, the company has diversified its portfolio to include the development of cutting-edge medical equipment. This expansion includes the creation of ultrasonic diagnostic equipment, universal X-ray photography devices, telemedicine systems, and healthcare monitoring devices.
Jiayuan established in China, in 1998, is a manufacturer engaged in machinery accessory and connection of hydraulic pipe with the Certificate of ISO 9001. Their product line includes diaulic system connection including tube fittings connector, hose assembly, flange block, valve and accessory. The company's products are used in industries such as construction, infrastructure development, agriculture, transportation and mining. The company has distribution channel in Japan, Germany, UK, France, Sweden and Korea.
Parker Hannifin Corporation was founded in 1917 and is headquartered in Cleveland, Ohio. Parker Hannifin is a manufacturer and distributor of motion and control technologies and systems for markets including mobile, industrial, and aerospace. Parker-Hannifin operates through two segments: diversified industrial and aerospace systems. Diversified industrial offers sealing, shielding, thermal products and systems, adhesives, diagnostics solutions, and hydraulic, pneumatic, and elctromechanical components and systems or industrial machinery and equipment. The aerospace segment offers control actuation systems and components, engine exhaust nozzles and assemblies, pilot controls, as well as others.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | COLD HOSE |
20.8%
|
| 2 | Don Brown Bus Parts |
16.7%
|
| 3 | Scott Equipment Co., Inc. |
12.5%
|
| 4 | Power Drives, Inc. |
12.5%
|
| 5 | Fluid Line Products, Inc. |
8.3%
|
| 6 | Home-Flex |
8.3%
|
| 7 | Hy-Lok USA, Inc. |
8.3%
|
| 8 | PARKER HANNIFIN CORP |
8.3%
|
| 9 | Nitto Metal Industry Co., Ltd. |
4.2%
|
Derivation Method
The ranking is calculated based on the click share within the conversion fitting 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
|
5 | 45.5% |
|
Japan
|
5 | 45.5% |
|
China
|
1 | 9.1% |
170 products found
170 products
Kokusai Kogyo Co., Ltd.
80+ people viewing
Last viewed: 1 day ago
5.0 Company Review
■Features The SLO type swivel joint is a product that has been widely used in machine tools and construction machinery vehicles, and is a reasonabl...
Kokusai Kogyo Co., Ltd.
70+ people viewing
Last viewed: 16 hours ago
5.0 Company Review
■Features The SLO type swivel joint is a product in which the piping installation screw on the body side is a G thread (PF) for a hose nipple, allo...
Kokusai Kogyo Co., Ltd.
80+ people viewing
Last viewed: 8 hours ago
5.0 Company Review
■Features The SLT type swivel joint B series is a product developed for use with water and water-soluble coolant liquids, and has achieved a maximu...
Kokusai Kogyo Co., Ltd.
80+ people viewing
Last viewed: 16 hours ago
5.0 Company Review
■Features The SLT type swivel joint A series is a product developed as a counterpart to the former SLN SLI, and is a joint manufactured using a sin...
Omura Giken Co., Ltd.
40+ people viewing
Last viewed: 17 hours ago
We accept orders for production.
Kokusai Kogyo Co., Ltd.
60+ people viewing
Last viewed: 10 hours ago
5.0 Company Review
■Features The SLU type swivel joint uses U packing for the seal and increases the strength of the shaft, achieving a pressure resistance of up to 3...
Omura Giken Co., Ltd.
40+ people viewing
Last viewed: 37 minutes ago
Kokusai Kogyo Co., Ltd.
50+ people viewing
Last viewed: 17 hours ago
5.0 Company Review
■Features The SUO type swivel joint has the same seal structure (O-ring type) as the SLO type, but the flow path is U-shaped and can be used for mo...
Omura Giken Co., Ltd.
40+ people viewing
Last viewed: 5 hours ago
Kokusai Kogyo Co., Ltd.
60+ people viewing
5.0 Company Review
■Features The BLM type is a high-speed rotating joint developed for use with cleaning water. By using ultra-precision lapped cemented carbide and a...
BENKAN Co., Ltd.
40+ people viewing
Last viewed: 1 day ago
■Product overview The CS conversion socket allows you to convert copper pipes for construction into stainless steel pipes for general plumbing by i...
Kokusai Kogyo Co., Ltd.
50+ people viewing
Last viewed: 1 day ago
5.0 Company Review
■Features The LIN type is a product developed as a pneumatic rotary joint. A carbon seal ring is used for the seal, and a ball bearing is used for ...
Yoshikawa Seisakusho
360+ people viewing
Last viewed: 2 hours ago
Fast Response
4 models listed
Omura Giken Co., Ltd.
40+ people viewing
Last viewed: 1 day ago
Kokusai Kogyo Co., Ltd.
40+ people viewing
5.0 Company Review
■Features The HLN type is a product developed as a rotary joint for general hydraulic oil with a pressure of 21 MPa or less. Since a carbon seal ri...
Yoshikawa Seisakusho
320+ people viewing
Last viewed: 2 hours ago
Fast Response
4 models listed
Kokusai Kogyo Co., Ltd.
50+ people viewing
Last viewed: 1 day ago
5.0 Company Review
Consus Co., Ltd.
50+ people viewing
Last viewed: 8 hours ago
Fast Response
Consus Co., Ltd.
40+ people viewing
Fast Response
■Features ・We can manufacture conversion adapters between overseas standard fittings (3A standard/DIN standard/SMS standard/RJT standard) and Japa...
Omura Giken Co., Ltd.
50+ people viewing
Last viewed: 1 day ago
Yoshikawa Seisakusho
310+ people viewing
Last viewed: 2 hours ago
Fast Response
4 models listed
Yoshikawa Seisakusho
480+ people viewing
Fast Response
4 models listed
Manse Kogyo Co., Ltd.
50+ people viewing
Standard Response
■The only one in Japan. We have a complete lineup of waveguide related products. We are the only company in Japan that stocks and sells copper tube...
Miyako Sangyo Co., Ltd.
250+ people viewing
Last viewed: 1 day ago
Standard Response
3 models listed
Tsukiji Manufacturing Co., Ltd.
140+ people viewing
Last viewed: 1 day ago
Standard Response
4.0 Company Review
3 models listed
Tsukiji Manufacturing Co., Ltd.
80+ people viewing
Last viewed: 6 minutes ago
Standard Response
4.0 Company Review
Tsukiji Manufacturing Co., Ltd.
140+ people viewing
Last viewed: 13 hours ago
Standard Response
4.0 Company Review
Stainless steel is also available depending on the size.
5 models listed
Tsukiji Manufacturing Co., Ltd.
150+ people viewing
Last viewed: 1 day ago
Standard Response
4.0 Company Review
Stainless steel is also available depending on the size.
5 models listed
Tsukiji Manufacturing Co., Ltd.
80+ people viewing
Last viewed: 7 hours ago
Standard Response
4.0 Company Review
3 models listed
