Piston Accumulator

Both store hydraulic energy, but the design and usage differs:

• Piston Accumulator: Uses a floating piston + seals, ideal for very high pressure, high cycle duty, and long service life
• Bladder Accumulator: Uses a rubber bladder, excellent for fast response, but bladder wear is higher in some high-cycle applications

Piston accumulators are preferred where high compression ratios and high pressure up to 1000 bar are required

Piston accumulators are widely preferred because they:

• handle very high operating pressures
• support high cycle rates with long service life
• allow high compression ratios between pre-charge and working pressure
• provide stable performance for demanding industrial and oil & gas applications

Petronash piston accumulators support storage pressure up to 1000 Bar(g).

Piston accumulators are commonly used in:

• Hydraulic Power Units (HPU)
• Oil & Gas well control systems
• Offshore hydraulic panels
• Subsea hydraulic systems
• High-pressure test systems
• Industrial presses and heavy-duty machines
• Valve actuators and pipeline control systems

They are ideal where high pressure + high cycle performance is needed.

The piston moves freely between the end caps and always balances pressure between:

• the gas chamber (nitrogen side)
• the hydraulic chamber (fluid side)

This ensures stable accumulator response and prevents mixing between gas and oil due to the gas-tight seals.

Petronash piston accumulators are available in:
Volume Range: 1 – 100 Litres

This range supports both compact systems and higher fluid storage requirements.

Petronash piston accumulators are designed for high-pressure operation:
Operating Pressure Range: 200 Bar(g) to 1000 Bar(g)

This makes them suitable for oil & gas and industrial systems where standard accumulators may not meet the pressure requirement.

Petronash piston accumulators support:
Operating Temperature: -10°C to 125°C

This wide temperature range makes them reliable for both controlled plants and harsh field environments.

Petronash offers piston accumulators in multiple high-grade materials such as:

• SS316 / SS316L
• SS 17-4 PH
• Duplex Stainless Steel
• 32CrMo4 Carbon Steel
• other materials available on request

Material selection ensures compatibility with pressure, corrosion conditions, and offshore requirements.

Petronash piston accumulators are commonly provided with:
Fluid Port Sizes: 1/2”, 3/4” and 1”

Custom porting options can also be offered based on package design and system integration needs.

Petronash piston accumulators are designed in compliance with:

• ASME Section VIII Division 1 (with or without U Stamp)
• BS EN 14359:2007

And certification options include: 

• U Stamp / PED (CE) / AS1210 / DOSH / others

This helps the product qualify for global EPC / oil & gas standards.

Petronash piston accumulators are engineered with:

• seamless cylinder construction
• robust floating piston design
• high-quality gas-tight seals
• precision machining of end caps and sealing zones

This ensures consistent performance even during high cycle loading — reducing downtime and maintaining hydraulic system efficiency.

Petronash Engineering is trusted for delivering piston accumulators that are:

• built for high pressure and demanding duty cycles
• available in customised designs
• manufactured to global codes like ASME
• offered with customer-required certifications (PED/CE, DOSH, AS1210, etc.)

We focus on reliability, compliance, and performance for oil & gas and industrial sectors.

Yes. Petronash provides both standard and customized piston accumulator designs, including:

• custom volume sizing
• special materials (SS / Duplex / CS)
• customized ports and connections
• compliance & certification support
• integration readiness for hydraulic packages

This makes it easy for customers to deploy within new or existing hydraulic systems.

Absolutely. Petronash can supply piston accumulators:

• as standalone units, or
• integrated into hydraulic packages such as HPU, WHCP, Chemical Injection Packages, and hydraulic control systems

This helps customers reduce vendor dependency and ensures system-level compatibility and quality.