Pump and Valve Contamination Tolerance Tester
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Whats/App: +86 185 0176 3615
Web: qinsun-lab.com
Solid particle contamination is a major cause of wear, silting, stiction, leakage, and ultimately failure in hydraulic pumps and valves. A Pump and Valve Contamination Tolerance Tester provides a controlled environment to subject both component types to contaminated fluid and assess their performance over time.
The tester typically consists of a hydraulic test circuit where the pump(s) and valve(s) under evaluation are installed. A reservoir holds a volume of test fluid (hydraulic oil) which is intentionally contaminated with a specific type and concentration of solid particles. The pump circulates this contaminated fluid, and the system includes a loading mechanism (e.g., restrictors, actuators) to operate the pump and cycle the valve(s) under realistic pressure, flow, and temperature conditions.
Throughout the test, which may involve running for extended durations or millions of cycles, the performance of both the pump and the valve(s) is monitored. Pump performance measurements include flow rate (volumetric efficiency), pressure, speed, and potentially power consumption. Valve performance measurements vary depending on the valve type (directional control, pressure control, flow control) but can include leakage rate, pressure control accuracy, flow regulation accuracy, response time, and the force or current required to shift spools. The cleanliness level of the circulating fluid is continuously or periodically verified using fluid sampling and particle counting according to standards like ISO 4406. After the test, component performance is re-measured, and the pump and valve(s) are often disassembled for detailed visual inspection and quantitative measurement of wear on critical surfaces. This comprehensive evaluation provides crucial data on how contamination affects the operational lifespan and performance stability of both pumps and valves.
Applications
Evaluating the wear resistance and durability of hydraulic pumps and valves simultaneously under contaminated fluid conditions.
Determining the impact of fluid contamination on the performance characteristics (efficiency, leakage, control accuracy, response time) of pumps and valves over time.
Validating the contamination tolerance of pump and valve designs, materials, and manufacturing processes.
Benchmarking the contamination resistance of different pump and valve models or manufacturers.
Research and development of more robust hydraulic components for use in contaminated environments.
Assessing the effectiveness of design modifications in improving contamination tolerance.
Standards
(1) ISO 4406:2021 — Hydraulic fluid power — Fluids — Method for coding the level of contamination by solid particles.
(2) ISO 18413:2017 — Hydraulic fluid power — Filters — Vocabulary and commercial specifications.
(3) ISO 10707:2019 — Petroleum products and lubricants — Determination of demulsibility characteristics.
(4) ISO 6403:2018 — Hydraulic fluid power — Filter elements — Verification of collapse/burst pressure.
(5) ISO 10372:2016 — Hydraulic fluid power — Filter elements — Method for measuring filtration performance.
(6) NFPA T2.6.1 — Standard for Hydraulic Power Units.
(7) GB/T 16907-1997 — Hydraulic systems — General technical specifications.
(8) GB/T 14039-2002 — Hydraulic transmission — Solid particle contamination code for oil.
(9) JB/T 7857-2006 — Evaluation method for contamination sensitivity of hydraulic valves.
(10) ISO 12103-A3 — Test dust standard for simulating solid particle contamination.
Features
Provides a comprehensive evaluation of both hydraulic pump and valve performance and wear resistance in a single test setup under contaminated conditions.
Simulates the interaction of contaminated fluid with key components in a hydraulic circuit.
Essential for selecting pumps and valves that can reliably operate in hydraulic systems with expected levels of fluid contamination.
Helps validate component designs and materials specifically for resistance to wear and degradation caused by particles.
Provides objective, quantitative data on the long-term effects of contamination on pump and valve performance.
Supports research and development efforts aimed at improving the robustness and lifespan of hydraulic components.
Technical Parameters
| No. | Technical Parameters | Specifications |
|---|---|---|
| 1 | Test medium | Hydraulic oil |
| 2 | Temperature of medium | 10 ~ 80℃ |
| 3 | Test dust | ISO 12103-A3 |
| 4 | Test pressure range | 0.5 ~ 6MPa |
| 5 | Test flow | 1 ~ 20L/min |
| 6 | Purification cleanliness | -/12/10 (GB/T |
| 7 | Test tank volume | 40L |
| 8 | Execution standard | JB/T 7857-2006 |
| 9 | Equipment power supply | AC380V / 50Hz |
| 10 | Power of the whole machine | 5.5kW |
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