Pacseal Hydraulics, Inc.

Hydraulic Bladder Accumulators

 

Main Contents

Hydraulic 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.



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.

 

Accumulator Size Diagram
Tank Repairable Diagram
Accumulator Sizes
Size

A1,in

cm

A2, in

cm

B, in

cm

C, in

3K

C, in

5K-6K

D, in

cm

E1, in

cm

E2, in

cm

1 Quart 11.5
29
N/A 2.1
5.4
4.5
11.4
4.8
12.2
1.6
4.1
1.9
4.8
N/A
1 Gallon

17

43.2

N/A

3.5

8.9

6.6

16.8

6.6
18.0

2.4

6.1

2.4

6.1

N/A
2.5 Gallon

21

53.3

20

50.8

3.5

8.9

9.1

23

9.6
24.4

3

7.6

2.4

6.1

1.4

3.6

5 Gallon

33

84.6

32.3

82

3.5

8.9

9.1

23

9.6
24.4

3

7.6

2.4

6.1

1.4

3.6

10 Gallon

54

137.2

53

134.7

3.5

8.9

9.1

23

9.6
24.4

3

7.6

2.4

6.1

1.4

3.6

11 Gallon

59.5

151

58.5

148.6

3.5

8.9

9.1

23

9.6
24.4

3

7.6

2.4

6.1

1.4

3.6

15 Gallon

77.5

197

76.5

194.3

3.5

8.9

9.1

23

9.6
24.4

3

7.6

2.4

6.1

1.4

3.6

Accumulator Weights
Size

Bottom Load

Total Weight (lbs/kg)

Top Repairable

Total Weight (lbs/kg)

3K 5K 3K 5K
1 Quart 10
4.5
5K
N/A N/A
1 Gallon

28

13

45

21

N/A

N/A

2.5 Gallon

72

33

118

54

79

36

125

57

5 Gallon

114

52

194

88

121

55

201

91

10 Gallon

187

85

322

146

194

88

329

149

11 Gallon

205

93

354

161

213

97

362

164

15 Gallon

267

121

466

212

275

125

474

215