ISO 4411:2019 PDF

Scope: This document specifies methods for determining, under steady-state conditions, the pressure differential caused by the flow through any given path in a hydraulic fluid power valve. Requirements for test installations, procedures and presentation of results are specified.

ISO 4411:2019 Referenced Document

ISO 10372 Hydraulic fluid power; four- and five-port servovalves; mounting surfaces
ISO 4401 Hydraulic fluid power - Four-port directional control valves - Mounting surfaces
ISO 5598 Fluid power systems and components — Vocabulary*， 2020-01-06 Update
ISO 5781 Hydraulic fluid power - Pressure-reducing valves, sequence valves, unloading valves, throttle valves and check valves - Mounting surfaces
ISO 6263 Hydraulic fluid power - Compensated flow-control valves - Mounting surfaces
ISO 6264 Hydraulic fluid power - Pressure-relief valves - Mounting surfaces
ISO 9110-1 Hydraulic fluid power — Measurement techniques — Part 1: General measurement principles*， 2020-05-12 Update
ISO 9110-2 Hydraulic fluid power — Measurement techniques — Part 2: Measurement of average steady-state pressure in a closed conduit*， 2020-05-12 Update

2019 ISO 4411:2019 Hydraulic fluid power — Valves — Determination of pressure differential/flow characteristics
2008 ISO 4411:2008 Hydraulic fluid power - Valves - Determination of pressure differential/flow characteristics
1986 ISO 4411:1986 Hydraulic fluid power; Valves; Determination of pressure differential/flow characteristics