Accumulator Charging and Servicing
Accumulators perform an important function in a hydraulic system by storing energy in the form of pressurised fluid. It works by using a movable component—often a bladder or a diaphragm—to separate inert gas (generally nitrogen) from the hydraulic fluid. The hydraulic accumulator aids in optimising system operations by correcting pressure fluctuations and pulsations, absorbing shocks, preventing contamination, providing supplemental energy, and balancing erratic fluid flow.
These useful devices can be found in a wide range of hydraulic equipment: excavators, injection moulding machines, mobile cranes, winches, concrete pumps, forklifts, piling rigs, wind turbines, drill rigs, and much more. Because bladders and diaphragms are so lightweight (compared to pistons), these devices can accommodate a variety of applications. Their maintenance demands are also typically small.
Nonetheless, accumulators will experience decreased performance with repeated use. Operational issues that these accumulators can develop include:
- Tears to the bladder or diaphragm
- Loss of pre-charge gas
- Deterioration of the seal
One common cause of bladder/diaphragm accumulator failure is overpressurisation inside the hydraulic system, frequently due to sudden pressure spikes. Also, fluid contamination can inflict serious harm to a bladder or a diaphragm membrane as well. In some cases, poor installation leads to impaired performance.
Choosing the Right Service for Your Accumulator Type
Different accumulator types require maintenance depending on their internal design. A bladder model uses a flexible internal bladder to separate gas and hydraulic fluid, a diaphragm model relies on a moulded diaphragm, and a piston model uses a precision-fitted piston to divide the two chambers. Each design has unique service needs and wear patterns.
At White House Products Ltd, we offer full service for standard accumulator models. This includes diagnosing internal wear and tear, checking gas pre-charge levels, and replacing bladders or diaphragms where needed. Our team also inspects for contamination and advises on compatible replacement components if the unit is beyond repair.
Hydraulic Accumulator Maintenance and Failure Prevention
We support a broad range of accumulator designs, including bladder and diaphragm models, through our service centre.
As previously mentioned, accumulators are susceptible to a variety of performance issues. These problems can reduce energy efficiency, cause erratic pressure behaviour, and compromise the safety of the entire hydraulic system. If left unresolved, they may result in fluid contamination, internal damage, or outright failure.
Our in-house service team provides expert accumulator maintenance, including:
- Seal and bladder replacement
- Precision nitrogen pre-charging using professional-grade equipment
- Full unit diagnostics and performance testing
- Accumulator recharging accumulator service center, and gas pressure evaluation
- Recertification and evaluation of used accumulators
At our certified we help customers detect problems early and deliver dependable, cost-effective repairs. Our parts inventory includes a variety of replacement system components—ensuring quick turnaround and compatibility with most standard units.
We serve maintenance professionals and equipment operators in construction, manufacturing, logistics, and other fields in which these devices are used. We are dedicated to providing practical hydraulic solutions that promote system improvement and long-term service life.
How White House Products Can Help
Accumulators tend to discharge over time, but provided the bladder or diaphragm remains in good condition, we can recharge it to the required pressure. Should that not be possible, we will provide a quote for either replacing or repairing the unit.
For any of your accumulator servicing needs, please do not hesitate to contact White House Products Ltd for a no-obligation quotation for service, repair, or replacement. We have years of experience with hydraulic accumulator troubleshooting, and we can bring our considerable knowledge to the task of restoring your device to its proper condition. Whether you need us to repair or charge your hydraulic accumulator, we will perform all services in a timely manner.
We can be reached at +44 (0)1475 742500. You may also send us a message with the following information:
- Your contact name and phone number
- The nature of the problem with the part
If you would like to send an accumulator to us for service, log in to your account and go to MY ACCOUNT > RETURNS > NEW REQUEST to arrange this.
Frequently Asked Questions (FAQs)
What is the typical lifespan of a hydraulic accumulator?
An accumulator can be expected to last for 10-12 years, sometimes longer, assuming that proper maintenance is performed at regular intervals. However, harsh operating conditions or unrepaired defects can lead to early accumulator failure.
How do you precharge accumulators?
The precharging process involves filling the gas chamber of the accumulator to the correct pressure level, which creates a stored energy reserve. The accumulator is then ready for use. Because the presence of pressurised fluid or gas inside the device poses a safety hazard, this procedure should be left to professionals trained to service hydraulic accumulators.
How often should I check the precharge pressure on my accumulator?
It’s advisable to check the accumulator pressure at least once a year. Be sure to consult the accumulator maintenance schedule set by the manufacturer.
Can an accumulator always be repaired?
Sometimes the cost of diaphragm or bladder repair, or fixing another trouble spot on the device, would exceed the total value of the accumulator itself, making this option impractical. We’ll provide you with a quote so you’ll be able to determine whether the device should be repaired or replaced.
How do I know if my accumulator cannot be repaired?
Signs of trouble include erratic pressure, slow system response, or visible leaks of hydraulic fluid or nitrogen gas. If the internal bladder or diaphragm has ruptured, or if the piston seal is severely worn, the unit may not hold pressure even after recharging.
In many cases, loss of pre-charge pressure is repairable—but if there is extensive internal damage or corrosion, the accumulator may be beyond repair. The accumulator shell, if damaged, should always be replaced rather than repaired.
We can inspect the unit and recommend an appropriate repair service or replacement based on its condition and usage history.
What causes pressure loss in a hydraulic accumulator?
Pressure loss is usually caused by nitrogen escaping through worn seals or damaged internal parts like the bladder, diaphragm, or piston. This loss reduces the accumulator’s ability to store energy and stabilise pressure effectively.
Do you offer recertification for used accumulators?
We do. Our technicians can test and recertify used accumulators to verify their performance and compliance. All recertification is performed at our certified facility, ensuring a high level of accuracy and reliability.
What industries do you support with your accumulator services?
We support clients in construction, manufacturing, logistics, marine, and agricultural sectors. Our hydraulic accumulator services help equipment owners and engineers achieve safer, more efficient systems with expert support at every stage.