Overview
ISO 10041-1:2010 - Pneumatic fluid power - Electro-pneumatic continuous flow control valves - Part 1: Main characteristics to include in the supplier's literature - defines the technical characteristics that suppliers must provide for electro-pneumatic continuous flow control valves. The standard is focused on documentation and product data: what electrical, static and dynamic parameters should appear in supplier literature for valves that exhaust to atmosphere (with specific provisions for two-port valves). It helps users compare, select and apply electro-pneumatic continuous flow control valves in pneumatic fluid power systems.
Key topics and requirements
- Scope and definitions: Clarifies terminology (electro-pneumatic continuous flow control valve, flow control servo-valve, inlet/operating/exhaust pressure, control signal ranges, etc.) in accordance with ISO 5598.
- Electrical characteristics: Suppliers must state minimum required voltage, current and power for the valve electronics.
- Static characteristics:
- Control signal–flow rate characteristic curves: Graphs of flow vs. electrical control signal across full scale (−100 % to +100 %), at specified operating and inlet pressures (exhaust pressure, inlet minus 100 kPa, and inlet pressure where applicable).
- Pressure–flow rate curves: Flow vs. pressure ratio plots for two-, three- and five-port valves.
- Characteristic values: Sonic conductance (C), critical back-pressure ratio (b), and, where appropriate, subsonic index (m) and cracking pressure (∆p).
- Resolution, repeatability and hysteresis: Quantified definitions and test-based reporting requirements.
- Leakage and pressure gain: Requirements for reporting leakage at null flow and pressure gain at null operating flow (exceptions for two-port valves).
- Dynamic characteristics: Requirements for time-response and other dynamic performance metrics to be included in supplier literature.
- Test references: The standard specifies that characteristic data reported must be obtained using the test methods of ISO 10041-2:2010.
Practical applications and users
ISO 10041-1:2010 is practical for:
- Manufacturers and suppliers preparing technical data sheets and product literature for electro-pneumatic continuous flow control valves.
- Design and control engineers selecting valves for position, force or flow control in pneumatic cylinders and systems.
- System integrators and procurement teams comparing products and ensuring compatibility with system requirements.
- Test laboratories and quality assurance teams validating supplier claims against ISO 10041-2 test methods.
Use this standard to ensure consistent technical communication, facilitate valve selection based on measurable characteristics, and support accurate specification in pneumatic fluid power projects.
Related standards
Keywords: ISO 10041-1:2010, electro-pneumatic continuous flow control valves, pneumatic fluid power, supplier's literature, control signal-flow rate, sonic conductance, pressure–flow characteristics.
Open preview (PDF)Pneumatic fluid power — Electro-pneumatic continuous flow control valves — Part 1: Main characteristics to include in the supplier's literature