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This section provides an overview for accumulators as well as their applications and principles. Also, please take a look at the list of 21 accumulator manufacturers and their company rankings. Here are the top-ranked accumulator companies as of June, 2025: 1.Pearse Bertram+ Streamline Contract Manufacturing, 2.Kinnear Specialties, 3.Fluid Energy Controls, Inc..
Table of Contents
A Hydraulic Accumulator is a device that converts the pressure energy of a fluid into other high-pressure fluid energy and stores it. It is mainly used in hydraulic and steam fluid equipment.
There are different devices in different technical fields depending on what is stored or accumulated. For example, in the computer field, accumulators temporarily store calculation results and are used for the next calculation; in the electric power field, storage batteries and accumulators; and in wind power generation, systems that circulate oil between windmills and generators to maintain balance.
In hydraulic and steam systems, the pressure energy of oil or steam is stored as nitrogen gas or steam pressure energy, and the gas is expanded to release energy when needed.
Accumulators are often used in hydraulic systems and steam boilers. In hydraulic systems, accumulators are installed in the high-pressure circuit leaving the pump, and the high hydraulic pressure during operation compresses the nitrogen gas sealed in the Accumulator. When the hydraulic pressure drops, the force of the nitrogen gas is used to raise the hydraulic pressure and maintain it.
In the boiler system, the steam accumulator stores the heat value of steam as high-temperature, high-pressure saturated steam when there is a surplus of steam, and delivers steam with reduced pressure when necessary. In addition, the boiler can operate efficiently and stably because the accumulator absorbs the imbalance between the time variation of steam usage and the steam generation of the boiler.
The use of accumulators in water pumps also softens sudden pressure fluctuations during shutdown and prevents water hammer. The main purpose is to use the energy of the stored gas in the accumulator's container as an auxiliary power source in an emergency. It is also effective in absorbing and buffering impact pressure, buffering pressure rise in the pipe, and reducing wasteful power consumption of the system.
Gas accumulators mainly use nitrogen, which is pressurized and contracted or expanded to transfer energy in and out. In the case of hydraulic systems, accumulators are installed in the high pressure circuit leaving the pump.
Inside the Accumulator is a bag called a bladder, which separates the oil side from the gas side. Nitrogen gas is sealed in the bladder, and when the hydraulic pump is driven and the hydraulic pressure rises above the nitrogen gas pressure, the nitrogen gas is compressed.
When the pressure in the hydraulic system drops or the pump stops, the pressure energy of the nitrogen gas causes the bladder to expand to maintain hydraulic pressure. This also has the effect of reducing pulsations in the hydraulic pressure.
The bladder, which seals the nitrogen gas inside the container, is made of a rubber-based material that expands and contracts. The container is made of carbon steel, stainless steel, aluminum, or synthetic materials that are free from corrosion.
The capacity of the container ranges from 0.5 to 450 liters, and the maximum allowable pressure is about 990 atmospheres.
Bladder-type accumulators are characterized by fast energy release and the ability to store and release energy in fast cycles as needed. In addition, the equipment can be made compact, and maintenance is easy.
Nitrogen gas is often used as the gas that stores energy in accumulators. Nitrogen gas is a nonflammable and inert gas, which prevents deterioration of the metal used in accumulators. Another advantage is that it is inexpensive and has no risk of explosion.
Since the pressure of nitrogen gas gradually decreases with repeated operation, it is necessary to periodically inspect the accumulators to ensure that the pressure has not decreased. If accumulators are used in the suspension, a drop in gas pressure will make it impossible to absorb shocks from the road surface, resulting in a poor ride quality. If the pressure is low, replenish nitrogen gas.
Accumulators are used in automobile suspensions and brakes. Accumulators, which act as gas springs, are used in special-purpose vehicles with large body weights and multi-axle vehicles, for which springs may not be able to absorb the shock. In addition, hydraulic suspensions using accumulators can raise and lower the vehicle body freely.
Accumulators are used in brakes to recover energy during braking. In hybrid vehicles, when energy is recovered by the motor, there is a discrepancy between the braking force required by the driver and that of the accumulator. To resolve this discrepancy, accumulators properly assist the motor to ensure optimal braking force.
*Including some distributors, etc.
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Pearse Betram+ was founded in 1947 in Bloomfield, Connecticut. Today Pearse Bertram+ is an end-to-end solutions provider for the manufacturing industry. Pearse Bertram+ is ISO 9001:2015 certified and also UL508A (industrial control panels), IPC 620 (wire harness assemblies), and IPC-A-610, J-STD-001, and IPC-7711 certified for soldering. Pearse Bertram+ operates in both contract manufacturing and engineering support. The manufacturing segment includes electrical, pneumatic, robotic, hydraulic, and process systems. Engineering support includes support for operation of robotics, machinery design and usage, industrial automation, value engineering, and auditing.
Fluid Energy Controls was founded in 1995 and is headquartered near Los Angeles in Brea, California. The company is a fluid power distributor of pumps, motors, and other hydraulic components from manufacturers such as Parker, Bosch Rexroth, Rineer, Denison, and Ausco. The company offers two primary product lines in accumulators and fluid power products. Accumulators include bladder accumulators, lube oil accumulators, pulsation control, surge suppressors, and accessories such as brackets and gauging. Fluid power products includes pumps and systems, process filtration, valves, and accessory products.
Kinnear Specialties, Inc. is a family-owned business founded in 1969 and based in Saint Helens, Oregon. Kinear Specialties is a manufacturer of custom hydraulic systems and a distributor of additional hydraulic machines, parts, and accessories. Kinnear Specialties has a broad line of products including hydraulic and pneumatic cylinders, pumps, hydraulic accessories, and accumulators. Complete custom filtering and hydraulic systems are available. Kinnear Specialties, Inc. also provides, design, installation, and repair services for hydraulic parts and systems.
Orr & Orr, Inc. has been offering wholesale distribution services since 1934 out of Bedford Park, IL. Orr & Orr emphasizes speed of order processing, shipping, and both customer and distributor satisfaction. Product categories that Orr & Orr offers include air conditioners, brake controls, cargo restraint equipment, door tracks, lighting equipment, fans, gas springs, heating equipment, hinges, plumbing supplies, seat belts, steps, toolboxes, hitch and towing products, various truck hardware, cables, battery products, safety equipment, and spring latches.
Reasontek Corporation was founded in 2009 and is headquartered in Brea, California. The company is a distributor of products that primarily serves the technology and domestic and global oilfield equipment and industrial supplies industries. The company has two primary business segments: accumulator production and oilfield equipment and industrial supplies. The accumulator production segment includes accumulators and other energy storage and surge protection devices as well as CAD services. The oilfield equipment and industrial supplies segment includes bladder accumulators, repair kits, and related accessories.
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.
Applied Power Solutions is located in Addison, Illinois and serves the metal processing, metal service center, paper mills & paper converting, canning, grinding mills, commercial laundry, marine drives oil & gas, power take off clutches, and material handling markets as a parts distributor and service provider. Some of Applied Power Solutions’s product offerings include clutches & brakes such as centrifugal clutches and water cooled brakes, hydraulics such as accumulators and manifold systems, pneumatics such as actuators and valves, and power transmission parts such as bearings and safety mats.
HIDRACAR S.A., founded in 1974, is a Spanish manufacturer based in Manresa, Barcelona, producing pulsation dampers and oil-pneumatic accumulators. The company’s pulsation dampers, designed for circuits with dosing pumps, are manufactured in compliance with European PED97/23/CE pressure vessel regulations, AD 2000 standards, and American Society of Mechanical Engineers (ASME) codes. These dampers are available in the bellows, in-line, and membrane variants. In addition, the company provides oleo-pneumatic accumulators and shock absorbers for stroke end, elevators, and railways. Hydrostatic dynamometers, diesel engine starters, and conveyor belt tensioners are also part of the company’s product line.
Carly, established in 2016 and headquartered in Rhone-Alpes, France, is a manufacturer of efficient refrigeration system component solutions. The company's products are mostly custom-made, although it also offers off-the-shelf components that include dehydration columns, horizontal filter drier receivers with ODF connections, Schaefer fittings and sight-glasses, and filter drier receivers with IMACA 305 connections and side-fixing feet. These products are used on large-scale refrigeration systems used in food processing, oil filtering and regulating systems, and decontamination systems used in chemical processing.
Taon Hydraulic, founded in 2011 and based in Syddanmark, Denmark, is a manufacturer of hydraulic components. The company produces hydraulic valves and pumps, hydraulic motors, oil filters, valves, accumulators, and hydraulic tanks to customers worldwide. All the products are supplied to different industries, including transportation and marine. The company also manufactures hydraulic orbit motors and pumps of different versions, such as gear pumps, variable piston pumps, handpumps, and vane pumps are produced. Apart from this, the company produces hydraulic valves such as directional control valves, solenoid valves, in—line valves, and proportional valves with hydraulic hoses and accessories.
Nippon Accumulator Co., Ltd. (NACOL) is a manufacturer and sales of accumulators, spring-loaded type safety valves and stop valves. It is headquartered in Shimizu, Shizuoka Prefecture, Japan, and was established in 1955. The company specializes in designing, manufacturing, and selling hydraulic accumulators, spring-loaded type safety valves and stop valves. Its products such as N and A Series, J-series, High Flow Type (Medium Size) and stainless (small size) accumulators are used in many applications, including hydraulic machinery, construction machinery, and industrial robots. NACOL also manufactures machinery equipment while conducting research and experimentation of general equipment, and exercising its patent rights.
Technetics Group is a sealing and critical component solutions manufacturer founded in 2006 as a subsidiary of EnPro Industries based in Columbia, South Carolina. The company offers a range of products including metal and polymer seals, rupture discs, accumulators and bellows. They also custom design polyether ether ketone (PEEK) rods, plates, disks, and other components. With 13 global manufacturing locations that offer engineering, manufacturing, testing, and prototyping services, Technetics Group serves clients in various markets including energy, life sciences, semiconductors, and aerospace.
Hydac, established in 1963, is a global manufacturer and supplier, specializing in fluid technology, hydraulic and electronic equipment, and filtration systems, that is headquartered in Saar, Germany. Their product range includes hydraulic filters, accumulators, valves, cooling systems, and control systems for industries such as oil and gas, mining, construction, power generation, and automotive. This product are used to create energy-efficient and low-waste solutions. Hydac is certified with ISO 9001 for quality management and ISO 14001 for environmental management.
Fox S.r.l. is an Italian manufacturer and distributor of industrial fans and ventilation systems that was established in Bologna in 1977. The company’s product lineup includes positive displacement and dynamic blowers, as well as centrifugal, axial, and mixed flow industrial fans. It also offers ventilation systems for filtration, cooling, and air treatment. The company’s products are commonly used in industrial manufacturing and processing facilities, as well as in the food and beverage industry. It is certified to ISO 9001:2015 and ISO 14001:2015 standards.
Durafilter Canada Inc. is a distributor, manufacturer, and supplier of hydraulic components and systems, headquartered in Concord, Ontario, Canada. Their product range includes hydraulic accumulators, filters, pumps, motors, and accessories, catering to various industries such as construction, manufacturing, mining, and agriculture. Durafilter's products enhance hydraulic systems with energy storage, contamination prevention, fluid flow, and improved efficiency for various applications. The company also serves as a North American distributor for multiple renowned brands, including Berarma, Marzocchi, Moog, Rexroth Bosch, as well as Ponar Wadowice, and API Pneumatic equipment.
mobac GmbH, founded in 1981 and based in Mieikendorf, Germany, is a manufacturer and supplier of machines for wire and cable industries and braking systems that work on a magnetic basis. The company produces winding machines, current control hysteresis brakes, dancer accumulators, magnetic particle clutches, and tangential payoffs. The products are used in the fields of general drive technology, aviation, automotive, wire, and cable. The company offers comprehensive repair and maintenance services for brakes and clutches within 12-24 hours.
Nok Corporation, founded in 1941 and based in Tokyo, Japan, is a manufacturer of several products, including sealing, rubber, and electronic products, and is part of the NOK Group. The company also makes flexible printed circuits (FPC), office automation equipment, and functional membranes, serving industries such as automobile, construction machinery, and electronic equipment. In 1960, the company expanded its production by constructing plants in Kumamoto, Fujisawa, and Shizuoka, and it was listed on the Tokyo Stock Exchange in 1961. In 1979, it was the first to set up a production base in the US before any Japanese automaker.
Advanced Fluid Systems was founded in 1985 and is based in York, Pennsylvania. The company is a distributor of fluid systems and provides planning, designing, engineering, and manufacturing services for customers. The company serves power generation facilities, industrial and manufacturing, and marine and mobile markets. The company has 7 product lines, ranging from simple motion controls to integrated manifolds, all the way up to hydraulic systems and power units, and power generation solutions. The company’s field services include installation, preventative maintenance, and repair.
Ranking as of June 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Pearse Bertram+ Streamline Contract Manufacturing |
11.4%
|
| 2 | Kinnear Specialties |
10.1%
|
| 3 | Fluid Energy Controls, Inc. |
8.7%
|
| 4 | Oil-Air Products, LLC. |
6.4%
|
| 5 | Flexicraft Industries |
6.0%
|
| 6 | SAIP S.r.l. |
5.4%
|
| 7 | Orr & Orr, Inc. |
5.4%
|
| 8 | Gesellschaft fur Hydraulikzubehor |
5.4%
|
| 9 | Advanced Fluid Systems, Inc. |
4.7%
|
| 10 | Technetics Group |
4.4%
|
Derivation Method
The ranking is calculated based on the click share within the accumulator page as of June 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
|
9 | 60.0% |
|
Spain
|
1 | 6.7% |
|
France
|
1 | 6.7% |
|
Denmark
|
1 | 6.7% |
|
Japan
|
1 | 6.7% |
|
Italy
|
1 | 6.7% |
|
Canada
|
1 | 6.7% |
65 products found
65 products
Nakamura Koki Co., Ltd.
210+ people viewing
The miniorator series is the smallest capacity bladder type accumulator. Since it is compatible with a wide range of body materials (stainless stee...
Nakamura Koki Co., Ltd.
250+ people viewing
Last viewed: 2 hours ago
The General series is the most popular type of bladder type accumulator in the world. Available in small to medium capacity, and compatible with a ...
Nakamura Koki Co., Ltd.
230+ people viewing
Last viewed: 22 hours ago
The Twin Open series is a bladder-type accumulator that opens in both directions at the top and bottom, allowing the bladder to be replaced from th...
Nakamura Koki Co., Ltd.
180+ people viewing
In-line type accumulators are highly effective at absorbing pulsation because the fluid flows in direct contact with the bladder surface. ■Feature...
Nakamura Koki Co., Ltd.
200+ people viewing
Last viewed: 11 hours ago
The screen type accumulator is a poppetless type accumulator for low pressure (MAX.3MPa). Since there is no poppet, the bottom of the bladder does ...
Meiwa Co., Ltd.
800+ people viewing
Last viewed: 2 hours ago
As one of the few manufacturers of pressure vessels (receivers, accumulators, etc.) and double pipe condensers in Japan, we offer general-purpose p...
6 models listed
Nakamura Koki Co., Ltd.
240+ people viewing
Last viewed: 23 hours ago
Transfer barrier accumulators are used to transfer pressure between different fluids, such as oil and water, clean oil and dirty oil, or liquid and...
Nakamura Koki Co., Ltd.
240+ people viewing
Last viewed: 15 minutes ago
Recently, in addition to being used for hydraulic equipment, accumulators are increasingly being used for water and special fluids (for example, hi...
Kato Seikan Iron Works Co., Ltd.
250+ people viewing
Overview ■Accumulator Saves energy by storing heat in steam. ■Features ・Small and simple once-through boiler ・Commercial hot water boiler ・Elec...
Nakamura Koki Co., Ltd.
210+ people viewing
Last viewed: 1 day ago
Hydro Lug is an air chamber air intake and exhaust device that is required in dusty environments and in places where a sealed tank is required, suc...
![[Improving the performance of equipment and machinery] EKK accumulator/Eagle Kogyo-Daiki Sangyo Co., Ltd.](https://metoree.s3.ap-northeast-1.amazonaws.com/img/products-new/30025892024051353.png)
Daiki Sangyo Co., Ltd.
340+ people viewing
Last viewed: 2 hours ago
■Accumulates pressure and instantly supplies a large amount of fluid. It is used for energy saving, safety, and noise reduction purposes. "EKK Accu...
Nakamura Koki Co., Ltd.
230+ people viewing
Last viewed: 1 day ago
A piston type accumulator is an accumulator that uses a free piston to separate the gas filling the accumulator from the pressurized liquid. This i...
Masaie Co., Ltd.
1150+ people viewing
Last viewed: 1 hour ago
■ Features Rotoro -rock joints and receiving bare tanks have a hydrogen bronze woven structure and are clean and excellent. All models, horizontal ...
7 models listed
Global Parts Co., Ltd.
210+ people viewing
Last viewed: 1 hour ago
GLO-YEOSHE accumulators can efficiently use energy and maintain pressure in hydraulic systems, so proper operation can reduce power consumption.
Masaie Co., Ltd.
1080+ people viewing
Last viewed: 3 hours ago
■ Features Refradation Research's high -pressure receivable tanks were designed for systems that use R410A. The "green label" of the tube is descri...
9 models listed
Masaie Co., Ltd.
1070+ people viewing
Last viewed: 13 hours ago
■ Features ・ Refradation Research's receiver tank has a reputation for a wide variety of models and quality. ・ Due to the hydrogen copper woven s...
8 models listed
TAIYO Co., Ltd.
280+ people viewing
Last viewed: 1 hour ago
■Features ・The gas permeability of bladder rubber is extremely low, and due to our unique manufacturing technology, there is little wear and tear ...
TAIYO Co., Ltd.
270+ people viewing
Last viewed: 4 hours ago
OLAER diaphragm accumulator. ■Features ・Small and lightweight. - Ideal for absorbing pulsation of hydraulic pumps and assisting during startup. ...
TAIYO Co., Ltd.
240+ people viewing
Last viewed: 12 hours ago
■Features ・Discharge amount setting and mounting direction are free. ・High-speed operation is possible. -Easy maintenance.
TAIYO Co., Ltd.
260+ people viewing
Last viewed: 20 hours ago
It absorbs the discharge pulsation peculiar to diaphragm pumps, allowing for smoother discharge. ■Features ・Easy to disassemble and assemble with...
TAIYO Co., Ltd.
270+ people viewing
Last viewed: 16 hours ago
A system that converts air pressure into air-oil using a pressure intensifier, creates hydraulic pressure of up to 17.5MPa, and operates small tigh...
TAIYO Co., Ltd.
220+ people viewing
Last viewed: 12 hours ago
A system that converts air pressure into air-oil using a pressure intensifier, creates hydraulic pressure of up to 17.5MPa, and operates small tigh...
Nakamura Koki Co., Ltd.
180+ people viewing
The piston type accumulator with sensor is an accumulator with a built-in position sensor so that the piston position of the piston type accumulato...
Tokupi Manufacturing Co., Ltd.
260+ people viewing
Last viewed: 1 day ago
■Small, lightweight, and durable accumulator Tokupilator is a stainless steel accumulator that is compact and lightweight. By temporarily storing f...
Nakamura Koki Co., Ltd.
270+ people viewing
Last viewed: 6 hours ago
Coreless type gas ports are equipped with permanent pressure gauges and safety devices. It is possible to check and reduce pressure in the accumula...
Nakamura Koki Co., Ltd.
240+ people viewing
Last viewed: 23 hours ago
The charging valve is a special tool for filling nitrogen gas into our accumulator. (Cannot be used with other companies' accumulators.) ■Precauti...
Nakamura Koki Co., Ltd.
180+ people viewing
Last viewed: 1 day ago
The charging hose is a hose that sends gas from the nitrogen gas cylinder to our charging valve.
Nakamura Koki Co., Ltd.
140+ people viewing
Last viewed: 7 hours ago
Our company began selling the FHN series as accumulator main valves in 1985, and boasts a proven track record of numerous deliveries and high relia...
Nakamura Koki Co., Ltd.
140+ people viewing
Last viewed: 5 hours ago
This is our standard oil port flange when using the accumulator with a flange connection. We also manufacture products compatible with JPI, ASME, a...
