ISO 10041-1:2010

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

• ISO 10041-2:2010 - Test methods to determine the main characteristics
• ISO 5598 - Fluid power vocabulary
• ISO 10094-1 / ISO 10094-2 - Related electro-pneumatic pressure control valve standards
• ISO 8778, ISO 11727 - Reference atmosphere and related measurement conventions

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.