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BLADDER ACCUMULATORS

A hydraulic bladder accumulator is the hydraulic equivalent of a spring in that it stores energy and dampens an impulse or force.

Storage of an incompressible, high pressure hydraulic fluid is accomplished through the use of compressed nitrogen gas in an elastomeric bladder enclosed in a high strength steel pressure vessel.

The nitrogen gas is precharged to a percentage of the maximum desired hydraulic pressure, and as the hydraulic fluid is pumped into the accumulator, the gas compresses as pressure is increased. Upon demand from the hydraulic system, the stored hydraulic energy allows for rapid discharge or absorption of pressure impulses.


Accumulator Sizes

Dimensions in inches
Size

A1

A2

B

C
3K

C
5/6K

D

E1

E2

1 Quart 11.5 N/A 2.1 4.5 4.8 1.6 1.9 N/A
1 Gal 17 N/A 3.5 6.6 7.1 2.4 2.4 N/A
2.5 Gal 21 20 3.5 9.1 9.6 3 2.4 1.4
5 Gal 33 32.3 3.5 9.1 9.6 3 2.4 1.4
10 Gal 54 53 3.5 9.1 9.6 3 2.4 1.4
11 Gal 59.5 58.5 3.5 9.1 9.6 3 2.4 1.4
15 Gal 77.5 76.5 3.5 9.1 9.6 3 2.4 1.4

Tank Repairable Diagram

Accumulator Weights

Size

Bottom Load
Total Weight
(lbs)

Top Repairable
Total Weight
(lbs)

3K 5K 3K 5K
1 Quart 10 17 N/A N/A
1 Gal 28 45 N/A N/A
2.5 Gal 72 118 79 125
5 Gal 114 194 121 201
10 Gal 186 321 194 329
11 Gal 205 354 213 362
15 Gal 267 466 275 474

APPLICATIONS

Energy & Pump Maintenance Savings:

Reduction of pump capacity requirements which provide long term energy savings and lower pump maintenance costs.

Surge Control & Shock Absorbers:

Pulsation dampening and noise reduction caused by pumps and “water hammer”.

Eliminate Sudden Pressure Drops:

Maintain constant pressure on a hydraulic system such as a press line where multiple presses are opened and closed at different times.

Thermal Expansion:

Compensates for pressure variations caused by temperature changes within a hydraulic circuit.

Emergency Back-Up & Safety Failsafe:

Provides stored fluid power for operation of hydraulic equipment power failure.

FEATURES

  • Over 40 years of proven reliability
  • Cannot be disassembled under pressure.
  • Bladder: Standard rubber compounds are Nitrile and Cold Weather Nitrile. Other elastomers are available by special order. Genuine PacSeal Hydraulics Bladders are manufactured in the USA using our tooling and proprietary manufacturing processes.
  • Shell: Chrome-Moly steel per SA 372 Gr E Cl 70, seamless non-welded, pressure tested to 1.5 times working pressure per ASME B&PV Code Section VIII Div 1, serialized and "U" stamped by ASME authorized inspector. U-1A certification provided as standard service.
  • Port Assembly: Standard fluid ports 1-1/4”NPT, 2” NPT  and #24 SAE, machined from alloy steel and coated for corrosion prevention. Other port types and materials are offered by special order.