Hydraulic accumulators are essential components in modern fluid power systems, serving as energy storage devices, pulsation dampeners, and emergency power sources that ensure smooth and reliable hydraulic operation. The Hydac SK600-1/2332S-517ACB-V0-08 Piston Accumulator represents the pinnacle of high-pressure accumulator technology, combining a robust piston design with premium 316 stainless steel construction to deliver exceptional performance in the most demanding subsea, offshore, and industrial hydraulic applications.

With a Maximum Allowable Working Pressure (MAWP) of 7500 PSI at 176 degrees Fahrenheit and a Minimum Design Metal Temperature (MDMT) of 14 degrees Fahrenheit at full working pressure, this accumulator is engineered to withstand the extreme conditions encountered in deep-water subsea installations, offshore drilling operations, and high-pressure industrial hydraulic systems. The use of S31803 duplex stainless steel (1.4462 / UNS S32205) provides superior corrosion resistance and mechanical strength compared to conventional 316L stainless steel, making this accumulator suitable for seawater exposure and other corrosive environments.

Manufactured by Hydac Technology GmbH of Germany and also associated with Oceaneering, one of the world's leading subsea engineering companies, this piston accumulator embodies the highest standards of European engineering and quality assurance. At Aeliya Marine Tech Pvt. Ltd., we are proud to offer this premium hydraulic accumulator in new condition, complete with our standard 30-day warranty and free worldwide shipping. Whether you are building a subsea hydraulic power unit, maintaining offshore blowout preventer systems, or upgrading industrial high-pressure hydraulics, this Hydac accumulator delivers the performance and reliability your critical application demands.

Key Features & Specifications of the Hydac SK600-1 Piston Accumulator

The Hydac SK600-1 piston accumulator incorporates advanced engineering and premium materials to deliver outstanding performance in high-pressure hydraulic systems. Here are the key features that distinguish this accumulator:

• 7500 PSI Maximum Working Pressure: With a MAWP of 7500 PSI at 176 degrees Fahrenheit, this accumulator handles the highest pressure hydraulic systems found in subsea, offshore, and heavy industrial applications.
• Duplex Stainless Steel Construction: Manufactured from S31803 (1.4462 / UNS S32205) duplex stainless steel, providing exceptional strength, toughness, and resistance to chloride-induced stress corrosion cracking in seawater environments.
• 1 Quart Capacity: The 1-quart (approximately 0.95 liter) fluid volume provides substantial energy storage and pulsation damping capacity for high-pressure hydraulic circuits.
• Piston-Type Design: The piston accumulator design provides complete separation between gas and fluid chambers, eliminating gas absorption into the hydraulic fluid and maintaining consistent pre-charge pressure over extended service periods.
• Wide Temperature Range: Rated for operation from 14 degrees Fahrenheit (MDMT at MAWP) to 176 degrees Fahrenheit (MAWP rating), covering the full range of temperatures encountered in subsea and industrial applications.
• ASME SA-479/UNS Certified Material: The duplex stainless steel construction meets ASME SA-479 standards, with material traceability documented through Mat# 615636 and Part# 0320538.
• German Engineering Excellence: Manufactured by Hydac Technology GmbH in Germany, a global leader in fluid power technology with decades of experience in high-pressure hydraulic components.
• Oceaneering Association: Listed with Oceaneering manufacturing references (03449962, 5690, 75237), indicating suitability for subsea and offshore oilfield applications.

Technical Specifications

Specification	Details
Manufacturer	Hydac Technology GmbH
Associated Manufacturer	Oceaneering
Model Number	SK600-1/2332S-517ACB-V0-08
Description	Accumulator, Piston, 1 Qt, 316 SS, 7500 PSI
MAWP	7500 PSI at 176 degrees Fahrenheit
MDMT	14 degrees Fahrenheit at MAWP 7500 PSI
Material	S31803 Duplex Stainless Steel (1.4462 / UNS S32205)
Material Standard	ASME SA-479 / UNS
Capacity	1 Quart
Oceaneering References	03449962, 5690, 75237
Material Number	615636
Part Number	0320538
Pressure Test	527078 (PS), 69362
Country of Origin	Germany
Weight	17.840 Kg

Applications & Use Cases

The Hydac SK600-1 Piston Accumulator is engineered for the most demanding high-pressure hydraulic applications where reliability, corrosion resistance, and pressure capability are critical:

Subsea Hydraulic Power Units

Subsea production systems, wellhead controls, and subsea intervention equipment operate at extreme pressures and depths where equipment failure is not an option. The Hydac SK600-1's 7500 PSI rating and duplex stainless steel construction make it ideal for subsea hydraulic power units (SHPUs) that power subsea trees, manifolds, and intervention systems thousands of feet below the ocean surface.

Blowout Preventer (BOP) Systems

Blowout preventers are the last line of defense against uncontrolled well releases in drilling operations. The accumulator stores pressurized hydraulic fluid that can be rapidly deployed to close BOP rams and annular preventers in emergency situations. The 7500 PSI capacity ensures adequate operating pressure even in deep-water drilling where hydrostatic pressures are extreme.

Offshore Platform Hydraulics

Offshore platforms rely on hydraulic systems for crane operation, riser tensioning, mooring systems, and process valve actuation. The accumulator's corrosion-resistant duplex stainless steel construction withstands the salt-laden marine atmosphere while providing energy storage for reliable hydraulic operation.

High-Pressure Test Systems

Hydrostatic test systems used to verify the integrity of pressure vessels, pipelines, and wellhead components require high-pressure fluid sources. The Hydac accumulator provides the energy storage capacity needed for sustained high-pressure testing operations.

Waterjet Cutting Systems

Industrial waterjet cutting machines operate at pressures exceeding 50,000 PSI and require hydraulic intensifier systems with high-pressure accumulators to maintain consistent cutting performance. The SK600-1's pressure rating and piston design provide the reliability these precision cutting applications demand.

Hydraulic Press and Forming Equipment

Metal forming presses, compression molding machines, and material testing equipment use high-pressure hydraulics to generate the forces required for shaping and testing materials. The accumulator provides emergency energy storage and pulsation damping that protects pumps and improves forming quality.

Why Choose the Hydac SK600-1 Piston Accumulator

The Hydac SK600-1 piston accumulator offers several compelling advantages over conventional bladder or diaphragm accumulators for high-pressure applications:

Superior Corrosion Resistance with Duplex Stainless Steel

S31803 duplex stainless steel provides approximately twice the yield strength of 316L austenitic stainless steel while offering superior resistance to chloride stress corrosion cracking. This material is the industry standard for subsea and marine hydraulic components where seawater exposure is a constant threat. The 1.4462 grade also offers excellent resistance to pitting and crevice corrosion in aggressive environments.

Piston Design for Gas Separation

Unlike bladder accumulators where the elastomer bladder can degrade over time and allow gas permeation into the hydraulic fluid, the piston accumulator provides a metal-to-metal seal that completely separates the gas and fluid chambers. This design maintains consistent pre-charge pressure over years of service and eliminates the risk of gas bubbles contaminating the hydraulic fluid.

Exceptional Pressure Capability

The 7500 PSI MAWP rating places this accumulator in the elite category of high-pressure hydraulic components. This pressure capability is essential for deep-water subsea applications where ambient pressures add thousands of PSI to the hydraulic system requirements, and for industrial applications where extreme forces must be generated.

Proven Subsea and Offshore Heritage

Hydac's association with Oceaneering, one of the world's premier subsea engineering companies, validates this accumulator's suitability for the most challenging underwater applications. Oceaneering's rigorous supplier qualification process ensures that only components meeting the highest standards of quality and reliability are deployed on their subsea systems.

Compatibility & Integration

The Hydac SK600-1 Piston Accumulator is designed for integration with high-pressure hydraulic systems following industry standards and best practices. Key compatibility considerations include:

• High-Pressure Hydraulic Circuits: Designed for systems operating at pressures up to 7500 PSI, compatible with high-pressure pumps, valves, fittings, and hoses rated for similar pressure levels.
• Nitrogen Pre-Charge: Piston accumulators are typically pre-charged with high-purity nitrogen gas to the pressure specified by the system designer. The pre-charge pressure determines the usable fluid volume and system response characteristics.
• Vertical or Horizontal Mounting: Piston accumulators can be mounted vertically or horizontally depending on space constraints and system design requirements. Horizontal mounting may require fluid port orientation considerations.
• Standard Port Connections: Equipped with industry-standard high-pressure port connections compatible with SAE, NPT, or BSP threaded fittings depending on the specific configuration.
• Safety and Shutoff Valves: Should be installed with appropriate isolation valves, pressure gauges, and safety relief devices as required by applicable codes and standards for pressure vessel installations.

Maintenance & Support

Piston accumulators require minimal maintenance compared to bladder-type accumulators because there is no elastomeric bladder to degrade or replace. Recommended maintenance includes periodic inspection of external surfaces for corrosion or mechanical damage, verification of pre-charge pressure, and checking of seals during scheduled system overhauls. The duplex stainless steel construction significantly reduces the risk of corrosion-related maintenance issues in marine and offshore environments.

At Aeliya Marine Tech, we understand that hydraulic accumulators are critical components in systems where failure can have serious consequences. This Hydac SK600-1 piston accumulator is offered in new, unused condition with full material certification and is backed by our standard 30-day warranty and free worldwide shipping. Our technical team can assist with pre-charge pressure recommendations, installation guidance, and system integration questions to ensure your accumulator performs optimally throughout its service life.

Frequently Asked Questions

Q1: What is the maximum working pressure of the Hydac SK600-1 accumulator?

The Hydac SK600-1 Piston Accumulator has a Maximum Allowable Working Pressure (MAWP) of 7500 PSI at 176 degrees Fahrenheit, making it suitable for the highest pressure hydraulic applications including subsea and deep-water systems.

Q2: What material is this accumulator constructed from?

This accumulator is manufactured from S31803 duplex stainless steel (also designated as 1.4462 or UNS S32205), which provides approximately twice the strength of 316L stainless steel with superior resistance to chloride stress corrosion cracking in seawater environments.

Q3: What is the fluid capacity of this accumulator?

The Hydac SK600-1 has a fluid capacity of 1 quart (approximately 0.95 liters), providing substantial energy storage for high-pressure hydraulic circuits.

Q4: What is the difference between a piston accumulator and a bladder accumulator?

Piston accumulators use a metal piston to separate gas and fluid chambers, providing complete separation with no gas permeation into the fluid. Bladder accumulators use an elastomeric bladder that can degrade over time and allow gas to permeate into the hydraulic fluid. Piston accumulators are preferred for high-pressure applications and where long service life with minimal maintenance is required.

Q5: Is this accumulator suitable for subsea applications?

Yes, the Hydac SK600-1 with its duplex stainless steel construction, 7500 PSI pressure rating, and Oceaneering association is specifically suited for subsea hydraulic applications including wellhead controls, BOP systems, and subsea intervention equipment.

Q6: Is this a new or used accumulator?

This Hydac SK600-1 Piston Accumulator is offered in new condition by Aeliya Marine Tech, complete with our standard 30-day warranty and free worldwide shipping.

Q7: What warranty does Aeliya Marine Tech provide?

Aeliya Marine Tech provides a 30-day warranty on this Hydac accumulator along with free worldwide shipping. Our technical support team is available to assist with pre-charge recommendations, installation questions, and system integration guidance.

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