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SAE ARP4553
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SAE ARP4553 Revision A, December 1, 2008
(R) Aerospace - Accumulator, Hydraulic, Self-Displacing
Description / Abstract:
Purpose
This SAE Aerospace Recommended Practice (ARP) is intended to provide design and qualification requirements for selfdisplacing hydraulic accumulators.
These requirements are intended be included in the Procurement Specification for the accumulator. Those requirements identified by the use of "shall" are considered to be essential requirements; those requirements identified by the use of "should" are considered to be optional requirements for inclusion in the Specification at the discretion of the Purchaser.
In addition, test methods for production acceptance and qualification purposes are provided.
The accumulator is intended for use in military aerospace hydraulic systems with rated pressures of up to 8000 psi (55 158 kPa) and of the following types as specified in AS5440:
Type I -65 to +160 °F (-54 to +71 °C) fluid temperature
Type II -65 to +275 °F (-54 to +135 °C) fluid temperature
The accumulator is also intended for use in commercial aerospace and helicopter hydraulic systems.
Classification
The accumulators shall be classified per the rated system pressure and rated return pressure as follows:
Class 1500 Hydraulic system, rated system pressure 1500 psi (10 342 kPa)
Class 3000 Hydraulic system, rated system pressure 3000 psi (20 684 kPa)
Class 4000 Hydraulic system, rated system pressure 4000 psi (27 579 kPa)
Class 5000 Hydraulic system, rated system pressure 5000 psi (34 473 kPa)
Class 8000 Hydraulic system, rated system pressure 8000 psi (55 158 kPa)
In addition to the above system pressure classification, the rated return pressure shall be stated or classified for the particular application. The basic classification number above has a dash number added to specify the return pressure as follows:
Each 100 psi (689 kPa) shall be designated by a two digit number, for example:
• 01 Hydraulic system, rated return pressure 100 psi (689 kPa)
Each additional 100 psi (689 kPa) will be a corresponding increase in dash number, for example:
• 05 Hydraulic system, rated return pressure 500 psi (3447 kPa)
Accumulator Identification
Each accumulator shall be identified as Class XXXX – YY, where:
XXXX is the rated system pressure
YY is the rated return pressure
For example. an accumulator that is identified as Class 3000-10 means that it is to be used in a hydraulic system where:
The rated system pressure is 3000 psi (20 684 kPa)
The rated return pressure is 1000 psi (6894 kPa)
This SAE Aerospace Recommended Practice (ARP) is intended to provide design and qualification requirements for selfdisplacing hydraulic accumulators.
These requirements are intended be included in the Procurement Specification for the accumulator. Those requirements identified by the use of "shall" are considered to be essential requirements; those requirements identified by the use of "should" are considered to be optional requirements for inclusion in the Specification at the discretion of the Purchaser.
In addition, test methods for production acceptance and qualification purposes are provided.
The accumulator is intended for use in military aerospace hydraulic systems with rated pressures of up to 8000 psi (55 158 kPa) and of the following types as specified in AS5440:
Type I -65 to +160 °F (-54 to +71 °C) fluid temperature
Type II -65 to +275 °F (-54 to +135 °C) fluid temperature
The accumulator is also intended for use in commercial aerospace and helicopter hydraulic systems.
Classification
The accumulators shall be classified per the rated system pressure and rated return pressure as follows:
Class 1500 Hydraulic system, rated system pressure 1500 psi (10 342 kPa)
Class 3000 Hydraulic system, rated system pressure 3000 psi (20 684 kPa)
Class 4000 Hydraulic system, rated system pressure 4000 psi (27 579 kPa)
Class 5000 Hydraulic system, rated system pressure 5000 psi (34 473 kPa)
Class 8000 Hydraulic system, rated system pressure 8000 psi (55 158 kPa)
In addition to the above system pressure classification, the rated return pressure shall be stated or classified for the particular application. The basic classification number above has a dash number added to specify the return pressure as follows:
Each 100 psi (689 kPa) shall be designated by a two digit number, for example:
• 01 Hydraulic system, rated return pressure 100 psi (689 kPa)
Each additional 100 psi (689 kPa) will be a corresponding increase in dash number, for example:
• 05 Hydraulic system, rated return pressure 500 psi (3447 kPa)
Accumulator Identification
Each accumulator shall be identified as Class XXXX – YY, where:
XXXX is the rated system pressure
YY is the rated return pressure
For example. an accumulator that is identified as Class 3000-10 means that it is to be used in a hydraulic system where:
The rated system pressure is 3000 psi (20 684 kPa)
The rated return pressure is 1000 psi (6894 kPa)
SAE ARP4553 Revision A, December 1, 2008
(R) Aerospace - Accumulator, Hydraulic, Self-Displacing