Aerospace Pressure Testing and Gas Charging System
Case Details
Aerospace manufacturers, component suppliers and maintenance teams require equipment that generates, controls and measures pressure for a defined task. The right system must suit the test medium, component volume, operating cycle and required records.
We supply Haskel air-driven pumps, along with high-pressure power units, pressure test benches, burst test systems, impulse test equipment and gas boosting and charging units.
Browse our pressure testing equipment, review gas boosting and charging systems, or prepare an equipment specification for your project.
Haskel pump technology for high-pressure systems
Haskel manufactures air-driven liquid pumps and gas boosters for industrial pressure generation. These products provide different solutions for liquid testing, hydraulic power, gas transfer and cylinder charging.
An air-driven liquid pump converts compressed air into hydraulic pressure. Its differential piston design allows a relatively low-pressure air supply to drive a higher-pressure liquid circuit.
Selected pumps can stall when the pressure forces reach balance and resume cycling when conditions change. This makes them useful for pressure-holding duties. However, pressure stability in a complete test system also depends on its valves, seals, controls and test component.
For buyers, the key is to select the pump against the full operating requirement. Maximum pressure alone does not define filling speed, cycle time or suitability for the test medium.
Pressure test benches for component verification
Different test methods answer different engineering questions. Therefore, the bench should be specified around the approved test procedure and acceptance criteria.
| Equipment type | Main purpose | Key purchasing requirements |
| Hydrostatic pressure test bench | Apply liquid pressure to a component or assembly | Test fluid, pressure range, holding period and measurement accuracy |
| Pneumatic pressure test bench | Apply gas pressure for a defined test | Gas type, test volume, pressure control and enclosure requirements |
| Burst test bench | Assess pressure-related failure under a controlled test | Pressure rise profile, measurement rate and specimen containment |
| Impulse test bench | Apply repeated pressure cycles | Pressure waveform, cycle frequency, temperature and cycle count |
| Hydraulic power unit | Supply hydraulic pressure to tools or equipment | Fluid compatibility, working pressure, flow and duty cycle |
A bench should also provide the connections and fixture arrangement needed for the component. In addition, its controls and records should match the buyer’s inspection process.
Aerospace applications and equipment selection
Our supply range addresses pressure testing, charging and hydraulic power requirements across aerospace production and maintenance.
| Application | Equipment focus |
| Engine bolt tensioning | Hydraulic power supply matched to approved tensioning tools |
| Aircraft hydraulic system testing | Compatible liquid pump, pressure controls and test connections |
| Landing gear accumulator charging | Gas charging equipment matched to the specified medium and pressure |
| Satellite and component leak testing | Controlled test gas supply and suitable measurement equipment |
| Aircraft emergency equipment charging | Charging systems selected for the specified gas and component |
| Fire extinguisher cylinder filling and testing | Dedicated filling and pressure testing arrangements |
| Helium leak testing | Helium-compatible gas supply, regulation and connections |
Each task requires its own technical review. For example, a hydraulic oil test circuit requires different materials and cleanliness requirements from a helium gas supply system.

Gas boosting and charging systems
A gas booster raises the pressure of an incoming gas supply for transfer, charging or testing. Selection depends on both inlet conditions and required outlet performance.
For a complete inquiry, specify the gas, minimum inlet pressure, target outlet pressure, filling volume and required cycle time. These details help determine a suitable booster configuration.
Packaged systems may include gas controls, pressure instruments, valves and a supporting frame or cabinet. Confirm the exact equipment included in the quotation.
For helium leak testing, the booster supplies pressurised test gas. Leak detection instruments, measurement methods and acceptance limits must also be defined as part of the complete test arrangement.
Hydraulic power units for aerospace tools
Hydraulic power units provide a pressure source for equipment such as engine bolt tensioning tools and component test fixtures.
The unit must match the tool’s working pressure, fluid requirement and flow demand. Also consider the number of connected tools and the planned operating cycle.
For mobile maintenance work, handling and access may affect the choice of frame or cabinet. For fixed installations, buyers may need control interfaces and connections that fit the existing workstation.
Review the complete hydraulic circuit together with the power unit. This helps align the pressure source, hoses, couplings and tooling.
Controls, measurement and test records
Clear measurement requirements help suppliers quote equipment that fits the inspection task.
Define the pressure range, sensor accuracy, calibration requirements and required recording rate. Then identify which values the test report must contain.
Depending on the project, records may include component identification, test medium, pressure history, holding time, cycle count and test result.
For automated equipment, also specify operator access, test recipe management and required data export formats. Agree these functions before ordering so the control system supports the intended workflow.
How to specify a pressure testing or charging system
Provide the following information with your inquiry:
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Component type, test purpose and approved procedure.
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Liquid or gas medium, including cleanliness requirements.
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Working pressure, test pressure and required flow.
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Component volume, filling time and expected duty cycle.
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Pressure rise, holding, release or cycling requirements.
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Connections, fixtures and installation space.
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Measurement accuracy, calibration and reporting needs.
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Available compressed air, electrical supply and other utilities.
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Inspection documents, order quantity and delivery requirements.
For aerospace procurement, identify the applicable customer specifications and acceptance requirements. Equipment suitability and documentation should be reviewed against those specific requirements.
Request an aerospace pressure equipment quotation
Send your application, medium, pressure range, component volume and test cycle requirements to discuss suitable equipment.
Whether you need a Haskel pump, hydraulic power unit, gas charging package or complete test bench, a clear specification provides the basis for a useful quotation. Use the pressure equipment specification checklist to prepare your inquiry.