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If you have ever heard of a fluid accumulator, you may be wondering what a fluid accumulator is and why you should care. A hydraulic accumulator is a useful device in hydraulic systems in which the accumulator plays a significant role in making the hydraulic system multipurpose. Facts about fluid accumulators and their role in machinery.
And a fluid accumulator is basically just a huge storage tank for hydraulic fluid. It is a small tank that is connected to a hydraulic system and contains gas, often nitrogen, and hydraulic fluid. When its hydraulic system is functioning, that fluid accumulator stores any extra hydraulic fluid that isn’t needed right away. This helps maintain a constant pressure and reduces injury to the system components.
Accumulators are important in hydraulic systems because they are able to absorb pressure changes and handle spikes in usage. With no fluid accumulator, the pressure in the hydraulic system can cycle up and down, causing it to function poorly or even break. A fluid accumulator, by maintaining a regulated amount of pressure and containing excess hydraulic fluid, ensures optimal performance of the hydraulic system.

A critical operation of a fluid accumulator is to at least assist in maintaining hydraulic pressure in a system. When the system is not in operation, the fluid accumulator maintains hydraulic fluid under pressure. When the system starts, the stored-in-the-basement hydraulic fluid is purged into the system to keep pressure up and lubrication flowing, all to ensure a smooth operation. This prevents an impairment of a pressure drop and enables the hydraulic system to be well operated.

Not every fluid accumulator used in hydraulic systems is the same, as there are different types which have specific features and functions. Common accumulator types include bladder, piston, and diaphragm. What the accumulator holds, and its pressure, generally depend on your application; bladder are for a lot of fluid flow at a fast pace and piston are for high pressure. Diaphragm accumulators are commonly used in mobile hydraulic applications because they are small and lightweight.

Fluid storage in machines with fluid accumulator has a number of advantages. Some of the main advantages are improved system performance, reduced wear of the parts and higher efficiency. By maintaining constant pressure and absorbing pressure spikes, a fluid accumulator can extend the life of the hydraulic system and cut down on the likelihood of problems. Also, it was possible to save energy or decrease the operation cost by the improvement of system performance through the fluid accumulator.
We offer a wide range of shell materials (including 304/316L stainless steel and duplex stainless steel) and bladder/diaphragm materials (such as NBR, FKM, EPDM), supported by a full-time R&D team that provides tailored solutions for diverse industrial applications.
Our professional team provides end-to-end technical support—from pre-sales consultation to after-sales service—including customized engineering solutions, nitrogen charging equipment, and responsive maintenance support to ensure optimal system performance.
Our company is certified under ISO9001 and GB/T19001 quality management systems, ensuring that all products meet rigorous international standards for reliability, safety, and customer satisfaction.
With over 30 years of experience, we specialize in designing and producing high-quality bladder and diaphragm accumulators, leveraging strong technical capabilities and well-equipped testing facilities to ensure superior performance and durability.