Bladder type Hydraulic Accumulator is an energy storage device which is mainly used during instant high demand requirement of hydraulic flow and pressure. It compensates pressure when there is a power outage or during switchover between pumps, manage the minor leakages and pressure drop takes place in the Hydraulic pipelines, fittings, and tubing, etc., It also acts as a shock absorber.
“Top repairable design” accumulator makes it possible to inspect the inside and replace bladders without having to remove them from piping. This type of Accumulator will greatly reduce the maintenance time and the cost involved.
“Welded type” bladder Accumulator is used mainly in low-pressure applications. The accumulator is fabricated with pipe and dish ends instead of seamless forming. The openings for the gas and fluid ends are precisely machined with high-precision CNC machines. Welding quality is validated using Radiography inspection to maintain the quality and integrity. The volumes are available in various ranges to meet the wide range of applications. The welded accumulators are available in Stainless steel material of any grade as well as in carbon steel material.
| Volume range | 1 – 54 Litres |
| Operating Pressure range | 40 Bar(g) to 690 Bar(g) |
| Bladder Operating Temperature | -10°C to 120°C |
| Shell Material | CS (34CrMo4) / SS316 / SS316L / Duplex SS / other materials on request |
| Bladder Material | NBR / Viton / HBR / EPDM / other materials on request |
| Fluid port size | ¼”, 3/8”, 1/2”, 3/4”, 1”, 2” & 3” |
| Gas connection | 1/4" BSP / 5/8" UNF |
| Design & Certification | U stamp / PED (CE) / AS1210 / DOSH / others |
Bladder accumulators are widely used in:
They are ideal where fast response and pressure stabilization are critical.
In normal operation, hydraulic fluid enters the accumulator and compresses the nitrogen-filled
bladder.
During a power outage or pump failure, the accumulator immediately releases the stored fluid
back into the system, ensuring:
This makes it a strong solution for hydraulic backup pressure.
Top Repairable Bladder Accumulator
Welded Type Bladder Accumulator
Petronash “Top Repairable Design” allows service teams to:
This feature is especially valuable in offshore platforms, remote plants, and high uptime
facilities.
Bladder accumulators offer multiple system advantages:
Petronash bladder accumulators are available in:
This wide range ensures compatibility with standard industrial HPUs as well as high-pressure oil
& gas hydraulic systems.
To suit different service conditions, Petronash offers:
Shell Material Options
Bladder Material Options
Material selection is critical for fluid compatibility, temperature range, and corrosion protection.
Petronash bladder accumulators support:
-10°C to 120°C bladder operating temperature
For special low temperature or high temperature environments, bladder material and system
configuration can be customized based on application.
Petronash designs accumulators as per:
This ensures suitability for global oil & gas projects and regulatory compliance.
Petronash offers multiple options for easy integration:
Fluid Port Sizes
¼”, 3/8”, 1/2”, 3/4”, 1”, 2” & 3”
Gas Connection
Port sizes can be selected based on your hydraulic system flow requirement and manifold
design.
A bladder accumulator must be pre-charged using nitrogen gas at a specified pressure level.
Petronash also offers a Universal Charging Kit, which includes:
Proper charging helps:
(Important: charging should be done as per operating procedure using nitrogen only.)
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