Accumulator and Cooler Division

Converting kinetic energy into mechanical power

The Global Leader in Energy Management, Parker is the world's largest supplier of piston, bladder and diaphragm accumulators. We provide world-class accumulator and cooling solutions for every hydraulic system.

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Engineering Success in Wind Energy

Want to keep your wind farm assets online longer? Parker offers a complete line of genuine Olaer accumulators, bladder repair kits, and related equipment designed with sustained performance in mind. Our proven leadership stems from more than 300,000 successful wind turbine bladder accumulator installations worldwide. Explore Parker’s reliable wind turbine solutions, readily available through an extensive global distribution network.


New from Parker

Parker Olaer bladder-style accumulators represent pure innovation, with unmatched designs developed explicitly for demanding wind turbine pitch control applications. Our unique bladder materials and Rilsan® coating combine to provide low nitrogen gas permeation and long life. Compatible bladder replacement kits make it possible to repair accumulators without removing them from the system. That’s the Parker Advantage!



Leading Manufacturer of Accumulators and Coolers

Parker Hydraulic Accumulators and Coolers

The Accumulator and Cooler Division is a leading manufacturer of hydraulic and pneumatic accumulators and coolers for industrial and mobile applications in North America. Parker offers a broader selection of accumulator products than any other manufacturer, including piston accumulators, bladder and diaphragm type accumulators, as well as a full range of water oil and air oil coolers for industrial and mobile applications.

Where to Buy

Where to Buy Parker Hydraulic Accumulators and Coolers

Available in a wide range of sizes, materials, port configurations and pressure ratings, Parker's hydraulic bladder, piston, diaphragm-type accumulators as well as air oil/water oil coolers and hydraulic reservoir isolators give engineers the ultimate in design flexibility. Our complete line of accessory products—including clamps, repair kits, and charging and gauging assemblies—making installation and maintenance easy. Find a Parker Accumulator & Cooler Distributor near you today.

Bladder Accumulator Demo Video

Parker Bladder Accumulator Video

Parker Bladder Accumulators are excellent for storing energy under pressure, absorbing hydraulic shocks, and dampening pump pulsation and flow fluctuations. They are a cost-effective option with fast response time and are compatible with low lubricity fluids. Each type of hydraulic accumulator has particular advantages and limitations, which should be considered when selecting an accumulator for a specific application.

Product Information

Parker Accumulators and Coolers Information and Technical Articles

Accumulator and Cooler Division is dedicated to providing our customers and distributors with general information and technical resources on hydraulic accumulators, coolers, and reservoir isolators, as well as comprehensive support for OEMs. Whether you are looking for instruction manuals, solutions for specific applications, online guides and tools, or simply want to ask a question, we can help.

Selection Assistance

Don't know which air oil cooler will meet your requirements? Or do you have a specific hydraulic or pneumatic accumulator that you are looking for? To make it easier to find product information, we have consolidated all our accumulator and cooler product information in two online selector tools. You can find specifications, selection and configuration data, system components, and CAD drawings. These online tools will help identify which series or multiple series of parts will meet your application. 

Hoover Dam Blog

Hoover Dam and Parker AccumulatorsHoover Dam -- one of the most impressive engineering feats of the 20th century – generates hydroelectricity for  millions of homes and businesses across the Southwest, and it’s a constant challenge to keep the vital power source running smoothly. Recently, a team of innovative engineering experts from Parker wrapped up a massive multi-year retrofitting and refurbishing project to make the dam safer and more operationally efficient. Parker's Accumulator and Cooler Division -- a world leader in the development of customized accumulator applications -- was given the assignment to design the best units for Hoover Dam’s unprecedented requirements. Working closely with two of our distributors, Parker was able to implement an ideal, cost-effective solution. 

Amusement Park Blog

Parker Hydraulic Accumulators for Amusement ParksMost people enjoy theme parks as a place to get away from work, but for those in the hydraulics industry, they are a place to demonstrate their expertise. Behind many of the rides that make your stomach drop or your eyes blink in amazement, Parker's hydraulic accumulators are picking up the stresses and enhancing the performances of hydraulic technology. Behind the scenes, there is complex machinery that must run precisely and smoothly to ensure safe and reliable operation. Whether you are splashing through water, sailing above the tree lines, or being wowed by animations and simulations, powerful equipment that depends on the science and engineering of hydraulics is enriching your activities. 

New Bladder Accumulator Competitive Cross Reference Tool

Need to find a bladder accumulator replacement part? Our easy-to-use Bladder Accumulator Competitive Crossover Tool enables you to select a competitor name and part number to find the Parker equivalent accumulator. 

This new crossover tool will also enable you to find suggested replacement bladder accumulators for obsoleted Parker parts.  If the product has been obsoleted, you will see the Parker replacement product number along with links to product pages, technical specifications, and where to buy for those replacement products. If the product has not been obsoleted, you will see the competitor listed, equivalent competitive part numbers as well as links to our extensive product information.