Piston accumulators store pressurized hydraulic fluid and release it as needed to maintain steady pump flow and pressure, dampen vibration, and compensate for leaks or thermal expansion in the system. An accumulator piston can also be used for emergency storage and power, and it accommodates for lost pressure if the system's pump fails or there is fluid loss in the system. They support high flow rates, have a large storage volume and high gas compression ratio (10:1) and tolerate extreme temperatures. They are fully assembled and are uncharged.
Bladder accumulators are used in medium flow-rate hydraulic systems to maintain steady pump flow and pressure, dampen vibrations and shocks. They also compensate for leaks or thermal expansion by storing pressurized hydraulic fluid and releasing it as needed. Bladder accumulators can be used as a source of power in an emergency, and are used where pressure inside the accumulator and line is not more than 4:1. These bladder accumulators are fully assembled and include the shell, bladder, valve, and seals. They are uncharged.
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