BOTTOM REPAIRABLE

Steelhead Composites lightweight 6,000 psi (414 bar) bottom repairable accumulators range in size from 5 gallons (19 liter) to 30 gallons (113 liter). Lightweight composite accumulators are a superior alternative to steel accumulators for weight-restricted uses, mobile applications and industries where access is remote, elevated or limited.

These bottom repairable accumulators are Aluminum lined composite pressure vessels consisting of a fluid port on one end and a gas port on the other. The large opening in the fluid port allows easy maintenance and replacement of the rubber bladder. The bladder is pre-charged with Nitrogen gas before the accumulator is put in to hydraulic service. A poppet valve in the fluid port prevents extrusion of the pre-charged bladder. A valve on the gas port allows periodic re-charging of the Nitrogen gas.

Advanced manufacturing processes allow for fast delivery of eight weeks or less for standard sizes and twelve weeks or less for custom accumulators.

*CE Marking Available

FEATURES & BENEFITS
STEELHEAD

The Steelhead feature allows for larger port opening, traditional steel threaded connections and enhanced neck mounting support

LIGHTWEIGHT

One-third to one-fourth the weight of traditional steel accumulators

CORROSION RESISTANT

Increased vessel life in corrosive environments due to naturally corrosion resistant construction

DURABLE

High-strength carbon fiber composite over aluminum liner for a structural shell, with additional glass layer for damage protection

SPECIFICATIONS
  1. Fully wrapped Type 3 Composite Over-wrapped Pressure Vessel
  2. Liner: Seamless, impermeable 6061-T6 Aluminum
  3. Structural: Carbon fiber and epoxy composite
  4. Protective Barrier: Glass fiber and epoxy composite
  5. Bladder: Buna-Nitrile (other materials available)
  6. Threaded (or flanged) steel port interfaces with industry standard 3.5 inch (89 mm) diameter port opening
  7. Fluid connection: SAE-24 female outlet port (other port options available)
  8. Safety Feature: Heat-activated pressure relief device available
  9. Maximum Operating Pressure: 6,000 psi (414 bar)
  10. Minimum Burst Pressure: 18,000 psi (1,241 bar)
  11. Operating temperature range: -20 degrees to 185 degrees F (-30 degrees to 85 degrees C)
  12. Compliant with applicable design specifications of US-DOT and UN/ISO

 

AVAILABLE SIZES
Nominal Volume

Gal (L)*

Operating Pressure 

psi (Bar)**

Overall Length A 

in. (mm)

Outside Diameter B

in. (mm)

Weight

lbs (kgs)

 5 (19) 3,000 (206)  28 (711)   12 (305)  69 (31)
 20 (76) 3,000 (206)   71 (1803)  11 (279)  124 (56) 

 

Nominal Volume

Gal (L)*

Operating Pressure 

psi (Bar)**

Overall Length A 

in. (mm)

Outside Diameter B

in. (mm)

Weight

lbs (kgs)

10 (38) 6,000 (414) 43 (1092) 12 (305) 105 (48)
15 (57) 6,000 (414) 58 (1473) 12 (305) 128 (58)
20 (76) 6,000 (414) 71 (1803) 12 (305) 169 (77)
25 (95) 6,000 (414) 86 (2184) 12 (305) 190 (86)
30 (113) 6,000 (414) 101 (2565) 12 (305) 229 (104) 

 

Standard accumulators deliver in 6-8 weeks. Allow up to 12 weeks for custom accumulators

*Custom Volumes

** Additional pressures available upon requests