ISO 9001 Certified, Steelhead Composites specializes in the manufacture of lightweight, high-pressure composite overwrapped accumulators ideally suited for weight sensitive applications. These accumulators weigh 1/3-1/4 the weight of traditional steel accumulators with the same functionality. The lightweight yet strong and durable construction results in high power density, increased safety, lower installation, maintenance and shipping costs.


Top Repairable Composite Accumulators

Steelhead Composites provides a lightweight alternative to traditional steel accumulators with high pressure top repairable designs ranging in size from 10 to 30 gallons. These accumulators rapidly store and release energy with a benign leak-before-burst construction that eliminates the possibility of catastrophic failure in operation.

Design Features

  • Fully wrapped type 3 composite overwrapped pressure vessel
  • Sizes: 10-30 Gallons (custom sizes available)
  • Liner: Seamless, impermeable 6061-T6 Aluminum
  • Structural: Carbon fiber and epoxy composite
  • Protective Barrier: Glass fiber and epoxy composite
  • Maximum operating pressure: 15,000 PSI
  • Minimum burst pressure: 18,000 PSI
  • Safety feature: Heat activated pressure relief device available
  • Fluid connection: SAE-24 female outlet port (other options available)
  • Threaded or flanged steel port interfaces
  • Bladder: Buna-Nitrile (other materials available)
  • Temperature range: -20 – 185⁰F
  • Port: 3.5 inch standard (accepts steel fluid port connections)

Common Applications

  • Hydraulic Power Units (HPUs)
  • Pulsation Dampening
  • Absorb Pressure Caused by Thermal Expansion
  • Complete Machine Cycle in Event of Power Failure
  • Leakage Compensation
  • Energy Conservation
  • Noise Reduction