What is a Hydraulic Piston Accumulator?
Hydraulic piston accumulators are precision-engineered energy storage devices used in hydraulic systems to maintain pressure, absorb shocks, and deliver consistent performance. Each piston-type accumulator is built from a high-quality cylinder tube with an internally machined superfine surface. Inside, a movable piston separates the gas and hydraulic fluid chambers to ensure efficient pressure balance.
How Hydraulic Piston Accumulators Work
During operation, hydraulic fluid enters the accumulator through the fluid port under system pressure, compressing the nitrogen gas in the opposite chamber. When pressure drops, the compressed gas expands, pushing the stored fluid back into the circuit. This quick release of hydraulic energy stabilizes system pressure and enhances machine responsiveness, making piston accumulators essential in modern industrial and mobile hydraulic applications.
Key Features of Piston Accumulators
- Very high compression ratios
- Large effective volume capacity
- Flexible mounting positions
- Customisable diameters and lengths
- Piston position monitoring possible
Technical Specifications of Piston Accumulators
- Pressure range: 50 – 750 bar
- Nominal volume: 0.2 – 3300 litres
- Temperature range: -10 °C to +80 °C
- Shell materials: Aluminium, Carbon steel, Stainless steel
- Seal materials: NBR, IIR (Butyl), FPM (Viton), ECO
- Piston diameter: 40 mm – 490 mm
- Certifications: CE, PED 97/23/EC, Factory Standards
Advantages of Piston Accumulators
- Handles high temperatures effectively
- Adaptable for transfer and backup systems
- Available with piston position indicators
- Custom capacities and diameters
- Durable, long service life
Trusted Brands and Models
We supply Piston Type Accumulators for a wide range of applications that demand efficiency, reliability, and long service life. Our inventory includes leading global brands such as Parker Piston Accumulators, known for their precision build and robust performance.
Hydac Piston Accumulators & Catalogue
We also offer Hydac Piston Accumulators, engineered for reliable and durable operation in high-pressure hydraulic systems. For engineers and buyers requiring detailed options, the Hydac Accumulator Catalogue is available with full specifications, sizes, and configurations.
Support and Assistance
Contact Techknow Engineering for piston accumulator selection, spares, or technical support. Our team will assist you with specifications, compatibility checks, and competitive pricing.
We, being Piston Accumulators Distributor, Piston Accumulators Seller, and Piston Accumulators Dealer, are able to provide reliable products from our Piston Accumulators Manufacturers
We also provide below-mentioned types of Accumulators and related accessories designed to ensure safe operation, proper mounting, and effective handling of the Piston Accumulators.
FAQ
Piston accumulators store energy in a hydraulic system using a floating piston that separates compressed gas (typically nitrogen) from hydraulic fluid. As system pressure rises, the piston compresses the gas and stores energy. When the system demands flow or pressure support, the compressed gas pushes the piston, returning fluid to the circuit for immediate energy release and pressure stabilization.
We leverage decades of hydraulic expertise to supply high-quality piston accumulators engineered for demanding industrial conditions. Precision pistons, robust sealing systems, and heavy-duty construction deliver consistent performance. We also provide full technical assistance and customization to match your exact system requirements.
Key benefits include excellent gas-to-fluid separation that minimizes cross-contamination, higher flow capability than diaphragm types, fast response for high-cycle applications, tolerance of higher pressures, reliable performance across wide temperature ranges, and better retention of precharge over time.
Ideal for high-pressure hydraulic systems, mobile and industrial machinery, and continuous-cycle operations. Typical uses include shock absorption on heavy equipment, emergency backup power, pulsation damping, and energy storage to meet intermittent high-flow demands in manufacturing.
Sizing depends on required fluid volume, operating pressure range, target flow rate, cycling frequency, and response time. We perform comprehensive sizing using industry formulas, gas laws, efficiency factors, and safety margins to optimize performance for your specific system.
Routine tasks include monitoring precharge pressure, inspecting seals for wear, checking for external leakage, and verifying smooth piston movement. We recommend quarterly pressure checks, annual seal inspections, and regular nitrogen precharge verification, with intervals adjusted to duty cycle and conditions.
Yes. Piston accumulators generally tolerate fluid contamination better than diaphragm types due to robust sealing and metal-to-metal guidance. Still, we advise maintaining cleanliness to ISO 4406 standards to maximize seal life and system efficiency; our designs include contamination-resistant features for extended service.
Working pressures from 1,500 to 10,000 PSI and fluid capacities from 0.5 to 50 gallons are available. Custom configurations can be provided for unique volume or pressure requirements. All units comply with ASME Section VIII and relevant international safety codes.
We offer piston accumulators from trusted manufacturers including HYDAC, Olaer, Parker Hannifin, Bosch Rexroth, EPE, Fox, Buccma, NXQ, and Hawe, delivering durable, reliable performance and long service life.
Certified designs • Custom engineering • On-site support • Fast delivery across India