Piston Accumulator
A Piston accumulator is a pressure storage device that uses compressed gas and hydraulic fluid separated by a floating piston to store and release energy when required. It plays a crucial role in stabilizing pressure, absorbing shocks, and maintaining system performance in hydraulic circuits.
Your Trusted Partner for Piston Accumulator in Singapore.
At OEMS Pore, we supply, service, and customize high-performance piston accumulators for all industrial and mobile hydraulic applications in Singapore. Our accumulators are engineered for reliability, precision, and safety—built to handle high pressures and harsh operating conditions across construction, marine, oil & gas, and manufacturing sectors.
⚙️ What Is a Piston Accumulator?
A piston accumulator is a type of hydraulic accumulator consisting of three main components:
- Gas chamber (usually nitrogen)
- Hydraulic fluid chamber
- Free-moving piston that separates the two chambers
When hydraulic pressure increases, the piston moves, compressing the gas. This stored energy is later released when the pressure drops, ensuring steady operation and pressure balance in hydraulic systems.
Key Functions
- Energy storage and release
- Shock absorption and pressure damping
- Leakage compensation
- Volume balancing
- Emergency power supply
How a Piston Accumulator Works
The working principle of a piston accumulator is simple yet effective:
- Charging phase: Hydraulic fluid enters one side of the cylinder, pushing the piston and compressing the nitrogen gas on the other side.
- Storage phase: Energy is stored as potential energy in the compressed gas.
- Discharge phase: When system pressure drops, the compressed gas expands, forcing hydraulic fluid back into the circuit.
This smooth exchange ensures continuous energy flow and protects hydraulic components from pressure fluctuations.
Why Choose a Piston Accumulator
Compared to other accumulator types, the piston design offers several advantages:
| Feature | Piston Accumulator | Bladder Accumulator | Diaphragm Accumulator |
|---|---|---|---|
| Pressure range | Very high (up to 1000 bar) | Moderate | Low to moderate |
| Gas volume | Adjustable | Fixed | Fixed |
| Maintenance | Easy piston & seal replacement | Requires full replacement | Limited |
| Installation position | Any direction | Mostly vertical | Vertical only |
| Temperature resistance | Excellent | Good | Good |
Verdict: The piston accumulator is ideal for heavy-duty, high-pressure systems where durability, flexibility, and performance matter most.
Applications of Piston Accumulators
Piston accumulators are used across various industries for energy storage, pressure control, and safety:
- Hydraulic presses and molding machines
- Offshore & marine systems
- Mining & heavy construction equipment
- Wind turbines and renewable energy systems
- Hydraulic lifts and cranes
- Mobile and agricultural equipment
- Testing benches and simulation rigs
In every case, the accumulator ensures smooth operation, power efficiency, and protection from hydraulic shock.
Types of Piston Accumulators We Offer
At OEMS Pore, we provide multiple configurations to meet your system’s needs. Below are the most common types—with images for visual reference.
1. Standard Hydraulic Piston Accumulator
Features:
- Cylindrical steel body
- High-pressure performance up to 350 bar
- Long service life
- Easy seal replacement
- Compact, durable design
Applications: Industrial hydraulic systems, presses, injection molding machines.
2. Lightweight Aluminum Piston Accumulator
Features:
- Lightweight aluminum body
- Ideal for mobile equipment
- High corrosion resistance
- Weight-saving for vehicle or aerospace applications
Applications: Mobile hydraulics, offshore equipment, defense systems.
3. High-Pressure Piston Accumulator
Features:
- Pressure range up to 1000 bar
- Heavy-duty piston seal design
- Safety-rated for critical operations
- Available with stainless-steel option
Applications: Oil & gas, mining, power plants, and marine systems.
4. Compact Mini Piston Accumulator
Features:
- Small capacity (0.1 to 0.5 liters)
- Compact, easy to install
- Ideal for space-limited systems
Applications: Precision tools, robotics, testing equipment.
5. Custom Engineered Piston Accumulator
Features:
- Tailored to system requirements
- Special coatings for corrosion or high temperature
- Custom mounting and port configurations
Applications: Offshore, marine, high-temperature, or subsea systems.
Maintenance & Inspection
To ensure safety and performance, piston accumulators should be regularly maintained.
Routine Checks:
- Gas pre-charge pressure
- Leakage around seals or ports
- Rod alignment and surface condition
- Pressure gauge accuracy
- Valve and seal integrity
Service Intervals:
- Minor inspection: every 6 months
- Full overhaul: every 2–3 years or as per usage
At OEMS Pore, we provide comprehensive maintenance and reconditioning services, including seal replacement, nitrogen charging, and pressure testing.
FAQ
We use dry nitrogen (N₂) because it’s inert, stable, and prevents oxidation.
Yes, piston accumulators can be installed in any orientation due to their sealed internal design.
It depends on system volume, working pressure, and energy requirements. Our team can calculate the ideal capacity for your system.
With regular maintenance, a high-quality accumulator can last 10–15 years.
Yes. OEMS Pore designs and supplies custom accumulators based on your pressure, temperature, or dimensional needs.
Why Buy from OEMS Pore
Here’s why Singapore industries trust OEMS Pore for hydraulic components and accumulators:
✅ Quality & Reliability
We supply piston accumulators built to international standards (CE / PED / ASME), ensuring long service life and consistent performance.
✅ Technical Expertise
Our team of hydraulic specialists provides end-to-end support—from system design to installation and testing.
✅ Custom Solutions
We design and modify accumulators to meet your specific pressure, volume, or mounting requirements.
✅ Fast Delivery
With local stock and efficient supply chain management, we offer quick delivery across Singapore and Southeast Asia.
✅ After-Sales Support
Our service includes technical consultation, installation guidance, and on-site servicing.
Awards & Certifications
A SME1000 award winner in 2011 and being nominated and awarded Top 50 SME in the E50 awards in 2013 and 2014, we are proud and honoured of these recognitions and look forward to share more of these successes with our valued clients.
Get Your Piston Accumulator Today
Looking for a reliable piston accumulator supplier in Singapore?
At OEMS Pore, we provide the right solution for your hydraulic systems—whether it’s a new installation or replacement unit.
Tel: +65 6863 2155
Fax: +65 6863 2055
Email: info@oemspore.com
Address: 159 Pioneer Road Singapore 639603
Our experts will help you select the best accumulator for your application.