ISO/TC 131/SC 5 - Control products and components

This document specifies the test procedures and a method of presenting results concerning the parameters which define the main characteristics to be included in the supplier's literature of the electro-pneumatic continuous pressure control valves, conforming to ISO 10094-1. The purpose of this document is: — to facilitate comparison by standardizing the test methods and the presentation of the test results, and — to assist in the proper application of these components in compressed air systems. The specified tests are intended to allow comparison between the different types of continuous pressure control valves; these are not production tests to be carried out on each manufactured product. The tests described in this document are for components with an exhaust port vented to the atmosphere. NOTE 1 The tests related to non-electrically modulated pneumatic continuous pressure control valves are specified in ISO 6953-2. NOTE 2 The tests related to electro-pneumatic continuous flow control valves are specified in ISO 10041-2. NOTE 3 ISO 6953-3 provides an alternate dynamic test method for flow-rate characteristics using an isothermal tank instead of a flow meter. However, this method measures only the decreasing flow rate part of the hysteresis curve of the forward flow and relief flow characteristics.

This document specifies which characteristics of electro-pneumatic continuous pressure control valves are to be included in the supplier's literature. In accordance with ISO 5598, these control valves include: — electrically modulated pneumatic proportional pressure valves, — proportional pressure control valves without electronic pressure feedback, and — proportional pressure control valves with electronic pressure feedback. This document is limited to the characterization of components with an exhaust port to the atmosphere. NOTE 1 The characteristics of non-electrically modulated pneumatic pressure control valves are specified in ISO 6953‑1. NOTE 2 The characteristics of electro-pneumatic continuous flow control valves are specified in ISO 10041‑1.

This document describes test methods for determining the performance characteristics of electrically modulated hydraulic pressure control valves.

This document specifies two methods of measuring the level of acoustic pressure at the outlet of an exhaust silencer: — the first method, called "steady-state mode", is intended to evaluate the noise level under steady state flow, i.e. constant upstream pressure (steady-state test according to ISO 6358‑1); and — the second method, called "discharge", is intended to measure the noise level during the decrease of the pneumatic pressure (discharge test according to ISO 6358‑2). This document is applicable to pneumatic exhaust silencers and devices designed to reduce the sound produced by discharges of compressed air, entering in the scope of application of ISO 6358‑1 and ISO 6358‑2.

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.

This document specifies a discharge test and a charge test as alternative methods for testing pneumatic fluid power components that use compressible fluids, i.e. gases, and that have internal flow passages that can be either fixed or variable in size to determine their flow-rate characteristics. However, this document does not apply to components whose flow coefficient is unstable during use, i.e. components that exhibit remarkable hysteretic behaviour (because they can contain flexible parts that deform under the flow) or that have an internal feedback phenomenon (such as regulators), or components that have a cracking pressure such as non-return (check) valves and quick-exhaust valves. In addition, it does not apply to components that exchange energy with the fluid during flow-rate measurement, e.g. cylinders, accumulators. NOTE This document does not provide a method to determine if a component has hysteretic behaviour; ISO 6358‑1 does provide such a method.

This document defines an identification code for hydraulic valve mounting surfaces and for hydraulic cartridge valve cavities that are defined in other International Standards (see Bibliography). This document is not applicable to mounting surfaces and cartridge valve cavities that do not conform to these International Standards. This document does not require that the hardware be marked with the identification code.

This document specifies tests, procedures and a method of presenting the results concerning the parameters that define the main characteristics to be included in the supplier's literature of lubricators conforming to ISO 6301‑1. This document can be applied: — to facilitate the comparison of lubricators by standardizing test methods and presentation of test data; — to assist in the proper application of lubricators in compressed-air systems. The tests specified are intended to allow comparison between the different types of lubricators; they are not production tests to be carried out on each lubricator manufactured.

ISO 5782-1:2017 specifies which characteristics of compressed air filters are to be included in the supplier's literature. It also specifies product-marking requirements. ISO 5782-1:2017 is applicable to compressed air filters, constructed from light alloys (aluminium, etc.), zinc diecast alloys, brass, steel and plastic, with a rated pressure of up to 1 600 kPa (16 bar) and a maximum temperature of 80 °C, designed to remove solid and liquid contaminants from compressed air by mechanical means

ISO 6301-1 specifies which characteristics of compressed-air lubricators are to be included in the supplier's literature. It also specifies product-marking requirements for lubricators. ISO 6301-1 is applicable to compressed-air lubricators constructed from light alloys (e.g. aluminium), zinc die-cast alloys, brass, steel and plastic, with a maximum rated pressure of 1 600 kPa (16 bar ) or less and a maximum rated temperature of 80 °C or less.

ISO 20401:2017 specifies the pin assignment for pneumatic directional control valves when used together with 8 mm and 12 mm diameter electrical round connectors according to IEC 60947-5-2. This definition is valid for connectors as shown in IEC 60947-5-2:2004, Figures D.2 and D.4, which are shown in Clause 4.

ISO 5781:2016 specifies the dimensions and other data relating to surfaces on which hydraulic pressure-reducing valves, sequence valves, unloading valves, throttle valves and check valves are mounted in order to ensure interchangeability. It applies to mounting surfaces for hydraulic pressure-reducing valves, sequence valves, unloading valves, throttle valves and check valves, which represent current practice; they are generally applicable to industrial equipment.

ISO 7368:2016 specifies only geometrical data relating to cavities in which two-port hydraulic slip-in cartridge valves are mounted in order to ensure interchangeability. NOTE For example, this document does not specify rated pressures. It applies to cavities for two-port hydraulic slip-in cartridge valves which are generally applicable to industrial equipment.

ISO 6953-2:2015 specifies test procedures and a method of presenting the results concerning the parameters which define the main characteristics to be included in literature from suppliers of regulators and filter-regulators conforming to ISO 6953‑1. The purpose of this part of ISO 6953 is the following: - to facilitate the comparison of pressure regulators and filter-regulators by standardizing test methods and presentation of test data; - to assist in the proper application of pressure regulators and filter-regulators in compressed air systems. The tests specified are intended to allow comparison among the different type of regulators and filter-regulators; they are not production tests to be carried out on each pressure regulator or filter-regulator manufactured. NOTE 1 The tests related to electro-pneumatic pressure control valves are specified in ISO 10094−2. NOTE 2 Use ISO 6953‑3 for an alternative dynamic test method for flow-rate characteristics using an isothermal tank instead of a flow meter. However, this method measures only the decreasing flow rate part of the hysteresis curve of forward flow and relief flow characteristics.

ISO 6953-1:2015 applies to - manually controlled direct operated types (with or without relieving mechanism), - manually controlled internal pilot operating types (e.g. nozzle flapper), and - external pilot operated types. In addition, it specifies the product marking requirements for pressure regulators and filter-regulators. This part of ISO 6953 is applicable to compressed air pressure regulators with a rated inlet pressure of up to 2 500 kPa (25 bar) and an outlet adjustment pressure of up to 1 600 kPa (16 bar); and to filter-regulators with rated inlet and outlet pressures of up to 1 600 kPa (16 bar), in which the major contaminants are removed by mechanical means. NOTE 1 1 bar = 0,1 MPa = 105 Pa; 1 MPa = 1 N/mm2. The rated pressure should be selected from the preferred pressures listed in ISO 2944. NOTE 2 The main characteristics to be included in the supplier's literature related to electrically modulated pneumatic continuous pressure control valves are specified in ISO 10094‑1.

ISO 6358-3:2014 specifies a method that uses a simple numerical technique to estimate without measurements the overall flow-rate characteristics of a system of components and piping with known flow-rate characteristics. The formulae used in ISO 6358-3:2014 describe the behaviour of a compressible fluid flow through a component for both subsonic and choked flows. ISO 6358-3:2014 also provides methods to obtain equivalent flow-rate characteristics for components whose flow-rate characteristics differ from those defined in ISO 6358.

ISO 6358-1:2013 specifies a steady-state method for testing pneumatic fluid power components that use compressible fluids, i.e. gases, and that have internal flow paths that can be either fixed or variable in size, to determine their flow-rate characteristics. ISO 6358-1:2013 does not apply to components whose flow coefficient is unstable during use, i.e. components that exhibit remarkable hysteretic behaviour (because they can contain flexible parts that deform under the flow) or that have an internal feedback phenomenon (such as regulators). In addition, it does not apply to components that exchange energy with the fluid during flow-rate measurement, e.g. cylinders, accumulators, etc. ISO 6358-1:2013 specifies requirements for the test installation, the test procedure, and the presentation of results for the steady-state method.

ISO 6263:2013 specifies the dimensions and other data relating to surfaces on which hydraulic compensated flow-control valves are mounted in order to ensure interchangeability. It applies to mounting surfaces for hydraulic compensated flow-control valves which represent current practice; they are generally applicable to industrial equipment.

ISO/TR 17209:2013 specifies the dimensions and provides other data relating to cavities with ISO 725 UN and UNF threads in which two-, three-, and four-port screw-in cartridge valves are mounted, in order to ensure dimensional interchangeability. It is applicable to two-, three-, and four-port screw-in cartridge valves generally used in industrial, agricultural, mining and mobile equipment.

ISO 7790:2013 specifies clamping dimensions of four-port modular stack valves and four-port directional control valves, sizes 02, 03, 05, 07, 08, and 10, on mounting surfaces. The dimensions and sizes conform to ISO 4401 so as to ensure interchangeability of these valves and to reduce the number of fixing devices to be used. It applies to clamping dimensions of four-port modular stack valves and four-port directional control valves which represent current practice. They are generally applicable to industrial equipment.

ISO 10770-2:2012 describes methods for determining the performance characteristics of electrically modulated hydraulic three-port directional flow-control valves. This type of electrohydraulic valve controls the direction and amount of hydraulic flow in a hydraulic system.

ISO 6953-3:2012 specifies alternative test methods for testing pneumatic fluid power components that use compressible fluids, i.e. gases. This part of ISO 6953 is applicable only to the decreasing flow rate part of the hysteresis curve of forward flow and relief flow characteristics. This method can be applied when: the pressure regulation dynamics of a component under test is rapid enough to be negligible, compared to the response of pressure changes during charge and discharge tests; the pressure response does not show any overshoot or any oscillating behaviour. ISO 6953-3:2012 specifies requirements for the test installation, the test procedure and the presentation of results. Examples of test results are given, as well as various data processing methods, and visualization of data processing procedures. Illustrations of overshoot and undershoot on regulated pressure response and large variations on inlet pressure are also given. ISO 6953-3:2012 applies to the following components: compressed air pressure regulators and filter-regulators according to ISO 6953-1; electro-pneumatic pressure control valves according to ISO 10094; other components such as relief valves.

ISO 16873:2011 specifies the mounting surfaces for pressure switches and gives guidelines for the standardized arrangement of the connections for pressure switches and for the mounting of plates and hydraulic valves.

ISO 10041-2:2010 specifies the test procedures and a method of presenting the results concerning the parameters that define the main characteristics to be included in the supplier's literature of electro-pneumatic continuous flow control valves. ISO 10041-2:2010 is intended to facilitate the comparison of these types of valves by standardizing test methods and the presentation of test results and assist in the proper application of these valves in pneumatic systems.

ISO 10041-1:2010 specifies the characteristics of electro-pneumatic continuous flow control valves that are to be included in the supplier's literature. ISO 10041-1:2010 is limited to the characterisation of valves that exhaust to atmosphere except for two-port valves.

ISO 10770-1:2009 describes methods for determining the performance characteristics of electrically modulated, hydraulic, four-port directional flow-control valves. ISO 10770-1:2009 describes methods of testing electrohydraulic, four-port directional flow-control valves. This type of electrohydraulic valve controls the direction and flow in a hydraulic system.

ISO 7789:2007 specifies the dimensions and provides other data relating to cavities in which two-, three- and four-port, screw-in cartridge valves are mounted in order to ensure interchangeability. ISO 7789:2007 is applicable to two-, three- and four-port screw-in cartridge valves generally used in industrial and mobile equipment.

This part of ISO 5599 specifies the requirements for a mounting interface surface with optional electrical connector for five-port pneumatic directional control valves, for use at a maximum rated pressure of [ 1)]. It gives
— dimensions and tolerances of the interface features,
— port identification,
— identification of the result of control-mechanism actuation, and
— dimensions, tolerances and specifications for optional interface electrical connector mating.
It is not applicable to the functional characteristics of interfaces.

This part of ISO 5599 specifies the requirements for a mounting interface surface without electrical connector for fiveport pneumatic directional control valves, for use at a maximum rated pressure of [ 1)]. It gives
— dimensions and tolerances of the interface features,
— port identification, and
— identification of the result of control-mechanism actuation.
It is not applicable to the functional characteristics of interfaces.

ISO 4401:2005 specifies the dimensions and other data relating to surfaces on which four-port hydraulic directional control valves are mounted in order to ensure their interchangeability. It applies to mounting surfaces for four-port hydraulic directional control valves which represent current practice. They are generally applicable to industrial equipment.

This part of ISO 5599 specifies the requirements for a mounting interface surface with optional electrical connector for five-port pneumatic directional control valves, for use at a maximum rated pressure of [ 1)]. It gives
— dimensions and tolerances of the interface features,
— port identification,
— identification of the result of control-mechanism actuation, and
— dimensions, tolerances and specifications for optional interface electrical connector mating.
It is not applicable to the functional characteristics of interfaces.

ISO 16874:2004 provides identification coding for manifolds used in hydraulic systems and for component installation features (for example, mounting surfaces or cavities) of such manifolds. It specifies identification codes to be marked on manifold blocks and correlated with product and service documentation such as circuit diagrams, bills of material and assembly drawings, for the purpose of facilitating assembly, installation, use and service of systems in which the manifolds are applied. The codes define a unique identifier traceable to associated documentation for each mounting surface or cavity. The installed component may be marked or tagged with the same identifier when such marking is necessary for clarity in assembly or service.

ISO 17082:2004 specifies which data are to be included in the manufacturer's supplier literature that accompanies any kind of pneumatic valve. These data are vital in selecting the proper valve for a particular application.

ISO 15407-2:2002 specifies dimensions and tolerances of the interface features, port identification, identification of the result of control-mechanism actuation, dimensions, tolerances and specifications for optional interface electrical connector mateability for a mounting interface and electrical connector for five-port pneumatic directional control valves, sizes 18 mm and 26 mm, for use at a maximum rated pressure of 1,6 MPa (16 bar). ISO 15407-2:2002 is not applicable to the functional characteristics of interfaces.

ISO 8778:2003 specifies a standard atmospheric reference value to be used in pneumatic fluid power technology for stating the performance data of components and systems.

ISO 15218:2003 specifies the dimensions of 3/2 solenoid valves for four sizes of mounting interface surfaces, with three holes for flow passages, two holes for fixing screws and requirements for a sealing surface, for use at a maximum rated pressure of 1,6 MPa (16 bar).

This part of ISO 5599 specifies the requirements for a mounting interface surface with optional electrical connector for five-port pneumatic directional control valves, for use at a maximum rated pressure of [ 1)]. It gives
— dimensions and tolerances of the interface features,
— port identification,
— identification of the result of control-mechanism actuation, and
— dimensions, tolerances and specifications for optional interface electrical connector mating.
It is not applicable to the functional characteristics of interfaces.

This part of ISO 5599 specifies the requirements for a mounting interface surface without electrical connector for fiveport pneumatic directional control valves, for use at a maximum rated pressure of [ 1)]. It gives
— dimensions and tolerances of the interface features,
— port identification, and
— identification of the result of control-mechanism actuation.
It is not applicable to the functional characteristics of interfaces.

This International Standard — specifies test procedures for measuring the shifting times of electrically- or pneumatically-operated directional control valves and moving-part logic elements, — establishes a definition for shifting time, and — is intended to improve the application of pneumatic fluid power by providing users and manufacturers of pneumatic valves with a standardized test procedure for measuring the shifting time it defines.

This International Standard specifies the following characteristics and requirements for a general-purpose, electrical-plug connector with two or three contacts plus earth, for use with solenoids: _ the electrical characteristics of the connector; _ the dimensions of the contacts; _ the means of fixing the plug to the socket; _ the sealing procedure between the plug and the socket; _ usage requirements. The electrical-plug connector specified in this International Standard is intended to be used under working conditions such that the connector cannot be damaged by external action (for example, shock or excessive loading).

1.1 This International Standard includes rules for identifying and marking ports in pneumatic directional control valves. These ports are the main flow connections, control connections and pilot supply connections. 1.2 This International Standard includes rules for identifying and marking electrical leads for solenoids. It is not applicable to internal electrical connections across manifold sections, such as connections to bus systems. 1.3 This International Standard includes rules for identifying and marking control mechanisms of directional control valves. 1.4 This International Standard includes rules for identifying and marking ports and/or flow path directions in filters, regulators, lubricators, non-return (check) valves, flow control valves and other ancillary devices. 1.5 This International Standard does not include rules for identifying and marking ports on proportional pneumatic valves, air logic valves, cylinders, air motors, semi-rotary actuators, air compressors, air dryers or other devices not specifically described in this International Standard.

Cancels and replaces the first edition (1989). Specifies the following characteristics and requirements for a general purpose two-pin electrical plug connector with earth contact for use with a single solenoid: the electrical characteristics of the connector; the dimensions of the pins and earth contact; the means for fixing the socket to the plug; the sealing procedure between the plug and the socket; usage requirements. The electrical plug connector specified herein is intended to be used under working conditions where the connector cannot be damaged by external action.

Cancels and replaces the second edition (1985). Specifies the following characteristics and requirements for a general purpose three-pin electrical plug connector with earth contact for use with a single solenoid: the electrical characteristics of the connector; the dimensions of the pins and earth contact; the means for fixing the socket to the plug; the sealing procedure between the plug and the socket; usage requirements. The electrical plug connector specified herein is intended to be used under working conditions where the connector cannot be damaged by external action.

Specifies the dimensions of surfaces on which servovalves are mounted in order to ensure interchangeability. Applies primarily to electrohydraulic flow-control servovalves. In addition, may be used for pressure-control servovalves. If the valve is used in a three-port application, either service port (A and B) may be omitted.

Specifies rules for the identification. Applies in particular to valves which will be developed in future with two and three ports, where today's practice of marking valve ports is different. The identification rules apply to those ports which provide the connection between two valves or between a valve and a pipe.

ISO 6358-2:2013 specifies a discharge test and a charge test as alternative methods for testing pneumatic fluid power components that use compressible fluids, i.e. gases, and that have internal flow passages that can be either fixed or variable in size to determine their flow-rate characteristics. However, ISO 6358-2:2013 does not apply to components whose flow coefficient is unstable during use, i.e. components that exhibit remarkable hysteretic behaviour (because they can contain flexible parts that deform under the flow) or that have an internal feedback phenomenon (such as regulators), or components that have a cracking pressure such as non-return (check) valves and quick-exhaust valves. In addition, it does not apply to components that exchange energy with the fluid during flow-rate measurement, e.g. cylinders, accumulators, etc. ISO 6358-2:2013 does not provide a method to determine if a component has hysteretic behaviour; ISO 6358-1 does provide such a method. The charge test cannot be performed on components that do not have downstream port connections. ISO 6358-2:2013 specifies requirements for the test installation, the test procedure, and the presentation of results. Annexes provide the following: evaluation of measurement uncertainties; requirements for a method to test the volume of an isothermal tank; guidance on the isothermal tank; requirements for a method to test isothermal performance; guidance on the equation for calculating characteristics; guidance on calculating flow-rate characteristics.