IHPV - Hydraulics and pneumatics

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.

This document establishes general principles for the measurement of performance parameters under static or steady-state conditions.
This document provides guidance on the sources and magnitudes of uncertainty to be expected in the calibration of and measurements using hydraulic fluid power components. It describes practical requirements for assessing the capability of the measuring system, and hence the level of uncertainty of the measurement system, or for assisting in developing a system which will meet a prescribed level of uncertainty.

This document establishes procedures for measuring the average steady-state pressure in a hydraulic fluid power conduit.
It is applicable to the measurement of average steady-state pressure in closed conduits with inside diameters greater than 3 mm, transmitting hydraulic fluid power with average fluid velocities less than 25 m/s and average steady-state static pressures less than 70 MPa.
It is not applicable to sensors which are flush mounted with, or an integral part of, the closed fluid conduit wall.
It provides the formulae for estimating the total uncertainty in a given pressure measurement.

This document specifies the general requirements and test methods for the design and performance of push-in connectors for use with thermoplastic tubes with outside diameters (OD) from 3 mm to 16 mm including dimensions in inches.
This document is intended to establish uniform methods of testing complete push-in connector assemblies as used in pneumatic fluid power applications. It is not applicable to air braking systems.

This document specifies the dimensions and tolerances so as to ensure the interchangeability of pneumatic quick-action coupling plugs. It also provides specifications and application guidelines, and specifies the tests to be applied to the plugs together with sockets.
NOTE 1 The construction and dimensions of sockets are left to the manufacturer's option.
This document applies to cylindrical quick-action couplings for maximum working pressures of 1 MPa, 1,6 MPa and 2,5 MPa (10 bar, 16 bar and 25 bar) for use in pneumatic fluid power systems.
NOTE 2 Quick-action couplings with shut-off valves for equipment for welding, cutting and related processes are covered by ISO 7289.
This document applies only to the dimensional criteria of products manufactured in accordance with this document. It does not apply to their functional characteristics.

This document gives general and dimensional specifications for flanged heads, flange clamps, ports and mounting surfaces applicable to four-screw, one-piece square flange clamp type tube connectors and hose fittings for use at a pressure of 42 MPa [420 bar[1]]. It also specifies the dimensions of the seals to be used, as well as the grooves that house the seals.
These connections are intended for application in hydraulic systems on industrial and commercial products where it is desired to avoid the use of threaded connectors.
[1] 1 bar = 0,1 MPa = 105 Pa; 1 Pa = 1 N/m2.

This document specifies a selection of nominal pressures for hydraulic and pneumatic fluid power connectors and associated components.
NOTE There can be a need to provide a selection of nominal pressures for connectors and associated components used in applications where the external pressure on the components is greater than the internal pressure, for example vacuum service. A document that deals with this subject will be established in due course.

This document establishes methods to:
— validate equipment used to prepare secondary calibration suspensions for automatic particle counters;
— perform online secondary calibration of automatic particle counters;
— match two or more online particle counters, i.e. to count the same number of particles at a given size by two APCs associated on line;
— validate online particle counting systems with and without online dilution as used, for example, to measure the filtration efficiency of a hydraulic filter as described in the multipass filter test in ISO 16889.

ISO 6605:2017 specifies uniform test methods for evaluating the performance of hoses and hose assemblies (hoses and attached hose fittings) used in hydraulic fluid power systems.
Specific tests and performance criteria for evaluating hoses and hose assemblies used in hydraulic applications are in accordance with the requirements of the respective product (hoses or hose fitting) specifications.

ISO 16656:2016 establishes mounting dimensions for single rod short-stroke cylinders with bores from 32 mm to 100 mm for use at 10 MPa (100 bar) with or without magnetic functions, as required for interchangeability of these commonly used hydraulic cylinders.

ISO 15552:2018 establishes a metric series of basic, mounting and accessories dimensions as required for interchangeability of single or double rod pneumatic cylinders with or without provision for magnetic sensors for a maximum rated pressure of 1 000 kPa (10 bar).
ISO 15552:2018 applies to pneumatic cylinders with detachable mountings.

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.

This document specifies acceptance and function tests for hydraulic fluid power cylinders.

This document specifies sizes and nominal working pressures for seamless and welded precision steel tubes with outside diameters in accordance with ISO 4397, and wall thicknesses and mechanical properties in accordance with ISO 3305. The nominal working pressures included in this document reflect a design factor ratio of 4 to 1 applied to the calculated burst pressures.

ISO 11171:2016 specifies procedures for the following:
a) primary particle-sizing calibration, sensor resolution and counting performance of automatic particle counters (APCs) for liquids capable of analysing bottle samples;
b) secondary particle-sizing calibration using suspensions verified with a primary calibrated APC;
c) establishing acceptable operation and performance limits;
d) verifying particle sensor performance using a truncated test dust;
e) determining coincidence and flow rate limits.

This document provides basic requirements for electric valve actuators, used for on-off and control valves. It includes guidelines for classification, design, enclosure and corrosion protection, and methods for conformity assessment.
Combinations of electric actuators and gearboxes when supplied by the actuator manufacturer are within the scope of this document.
This document does not cover solenoid actuators, electro-hydraulic actuators and electric actuators which are integral to the valves.
Other requirements or conditions of use different from those indicated in this document are agreed between the purchaser and the manufacturer/supplier, prior to order.

This document applies to valves of DN 15 and larger, made of metallic materials for chemical and petrochemical plants. It contains additional requirements to those contained in the relevant European product standards (e.g. EN 593, EN 1349) and EN 16668.
The use of design codes or technical rules other than described by European product standards are subject to agreement with the purchaser.
Process control devices and safety accessories are not subject of this document.

This document specifies only the requirements for a product assembled from the in-series combination
of safety valves or CSPRS (controlled safety pressure relief systems) according to ISO 4126-1, ISO 4126-4
and ISO 4126-5, and bursting disc safety devices, according to ISO 4126-2, installed upstream of the
valve within five pipe diameters of the valve inlet. It specifies the design, application and marking
requirements for such products, composed of the bursting disc safety device, a safety valve or CSPRS
and, where applicable, a connecting pipe or spool piece. In addition, it gives a method for establishing
the combination discharge factor used in sizing combinations.

This document specifies the requirements for a heavy-duty series of bolted bonnet steel gate valves for
petroleum refinery and related applications where corrosion, erosion and other service conditions can
indicate a need for full port openings, heavy wall sections and large stem diameters.
This document sets forth the requirements for the following gate valve features:
— bolted bonnet;
— outside screw and yoke;
— rising stems;
— non-rising handwheels;
— single or double gate;
— wedge or parallel seating;
— metallic seating surfaces;
— flanged or butt-welding ends.
It covers valves of the nominal sizes DN:
— 25; 32; 40; 50; 65; 80; 100; 150; 200; 250; 300; 350; 400; 450; 500; 600;
corresponding to nominal pipe sizes NPS:
— 1; 1¼; 1½; 2; 2½; 3; 4; 6; 8; 10; 12; 14; 16; 18; 20; 24;
applies for pressure Class designations:
— 150; 300; 600; 900; 1 500; 2 500;
and applies for pressure PN designations:
— 16, 25, 40, 63, 100, 160, 250 and 400.

This document specifies the endurance test necessary to confirm the ability of hand-operated plastics
valves to withstand prolonged use, with repeated opening and closure. It does not specify the ability of
valves to withstand adverse conditions, in particular those of chemically aggressive fluid media and/or
environments, or excessive fluid velocities and cavitation.
NOTE Concerning the chemical aggression of the materials, a classification table is reported in
ISO/TR 10358[1].
This document includes values of the parameters necessary for the proper performance of the
endurance test, with the reservation that the parameters are different in particular product standards
(see 5.1).

This document specifies the general requirements for metallic check valves, which are forged, cast or fabricated in straight, angle or oblique pattern (see EN 736‐2) with end connections flanged or wafer, butt welding, socket welding, or threaded.
This document applies to metallic check valves used for all industrial applications.
Additional requirements given in the relevant application standards may apply to check valves used for more specific applications (e.g. for the water industry, the chemical and petrochemical process industry, the gas distribution industry).
Sanitary check valves and back flow prevention anti-pollution check valves are excluded from the scope of this document.
The range of nominal sizes covered is:
-   DN 8, DN 10; DN 12, DN 15; DN 20; DN 25; DN 32; DN 40; DN 50; DN 65; DN 80; DN 100; DN 125; DN 150; DN 200; DN 250; DN 300; DN 350; DN 400; DN 450; DN 500; DN 600; DN 700; DN 750; DN 800; DN 900; DN 1 000; DN 1 200.
DN 8 and DN 12 are not used for PN designated flanged end connections.
DN 8, DN 10 and DN 12 are not used for Class designated flanged end connections.
DN 750 is used for Class designated check valves only.
Socket welding end check valves and threaded end check valves are limited to the range DN 8 to DN 65.
The range of pressure designations covered is:
a)   for flanged end and wafer type end cast iron bodies:
-   PN 2,5; PN 6; PN 10; PN 16; PN 25;
-   Class 125; Class 250;
b)   for flanged end, wafer type and butt welding end bodies in steel or copper alloy materials:
-   PN 2,5; PN 6; PN 10; PN 16; PN 25; PN 40; PN 63; PN 100; PN 160; PN 250; PN 320; PN 400;
-   Class 150; Class 300; Class 600; Class 900 ; Class 1 500; Class 2 500;
c)   for socket welding end and threaded end bodies in steel or copper alloy materials:
-   PN 40; PN 63; PN 100;
-   Class 600; Class 800.
NOTE   Class 800 is a widely used Class designation for socket welding and threaded end check valves.
The correspondence between DN and NPS is given for information in Annex B.

This document provides basic requirements for gearboxes to operate industrial valves for manual and automated on/off and modulating duties, this includes manual override gearboxes. It includes guidelines for classification, design and methods for conformity assessment. It does not cover gear systems which are integral part in the design of valves and subsea gearboxes. Other requirements or conditions of use different from those indicated in this document are agreed between the purchaser and the manufacturer or supplier (first party), prior to order.

This document specifies the requirements for bursting disc safety devices.
It includes the requirements for the design, manufacture, inspection, testing, certification, marking,
and packaging.

This European Standard specifies the tabulation method for determining the wall thickness of valve bodies, bonnets and covers with essentially circular cross-section made in forged, cast or fabricated steel.
For valve shells with oval, rectangular or non-circular shapes, see 8.6.
The range of PN or Class designations for which thicknesses are tabulated is:
PN 2,5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160, PN 250, PN 320, PN 400, Class 150, Class 300,Class 600, Class 900, Class 1 500, Class 2 500, Class 4 500.
Pressure/temperature ratings are specified for each material group for the above PN Standard Class and Special Class designations.
The non-destructive examination procedures and acceptance levels that need to be applied to the valve shell components in order for the valve to be used at Special Class pressure/temperature ratings are defined.
Details are also given for the alternative rules for small bore valves of DN 65 and smaller designated as Limited Class.
This standard does not apply to threaded end valves:
- DN 80 or larger;
- or which have pressure ratings greater than Class 2 500;
- or which operate at temperatures greater than 540 °C.
Socket welding end valves DN 80 or larger are outside the scope of this standard.

This European Standard specifies the calculation method for valve shells manufactured in metallic materials other than steel. The loadings to be accounted for are in accordance with EN 12516-2.
Design methods are in accordance with EN 12516-2, design by formulae according to the relevant clauses.

This European standard applies to metallic valves as pressure accessories for industrial applications with a maximum allowable pressure PS greater than 0,5 bar in accordance with the Pressure Equipment Directive (PED) 97/23/EC and specifies minimum requirements applicable to design, manufacture, testing, materials and documentation.
All relevant essential safety requirements of the Pressure Equipment Directive (PED) 97/23/EC applicable to valves have been taken into consideration and are addressed in this standard.
This standard is not applicable to:
-   safety valve and bursting disc (a safety accessory),
-   sight glass with its frames (component of a pressure equipment) and
-   measurement chambers.
For other exclusions refer to the PED.

This standard gives the denominations of valves. It has the purpose to provide a uniform and systematic terminology for all types of valves. By reasons of classification of terms clause 4 defines terms related to basic design characteristics and clause 5 defines terms related to functional characteristicsof valves.

This European Standard specifies the dimensions of butt welding ends of steel valves DN 8 to DN 1 400 designed to be butt welded to standardized pipes.
NOTE   The outside diameters and wall thickness of standardized pipes are in accordance with ISO 4200.

This European Standard specifies minimum general requirements for butterfly valves having metallic bodies for use in wafer, lug, flange or butt welding piping systems and used for isolating, regulating or control applications.
The PN and Class ranges are:
-   PN 2,5; PN 6; PN 10; PN 16; PN 25; PN 40; PN 63; PN 100; PN 160;
-   Class 150; Class 300; Class 600; Class 900.
The DN range is:
-   DN 20; DN 25; DN 32; DN 40; DN 50; DN 65; DN 80; DN 100; DN 125; DN 150; DN 200; DN 250; DN 300; DN 350; DN 400; DN 450; DN 500; DN 600; DN 700; DN 750; DN 800; DN 900; DN 1 000; DN 1 100; DN 1 200; DN 1 400; DN 1 500; DN 1 600; DN 1 800; DN 2 000; DN 2 200; DN 2 400; DN 2 600; DN 2 800; DN 3 000; DN 3 200; DN 3 400; DN 3 600; DN 3 800; DN 4 000.
DN 750 is used only for Class 150 and Class 300.
NOTE   Intermediate DNs are allowed upon agreement between manufacturer and customer.
For valves subject to Pressure Equipment Directive, EN 16668 applies together with this European Standard.
For industrial process control valves, EN 1349 and EN 60534 2 1 apply together with this European Standard.
For water supply application, EN 1074 1 and EN 1074 2 apply together with this European Standard.
The correspondence between DN and NPS is given for information in Annex D.

This European Standard specifies requirements for the attachment of part-turn actuators, with or without gearboxes, to industrial valves.
The attachment of part-turn actuators to control valves is in accordance with the requirements of this standard only when subject to an agreement between the supplier and the purchaser. This standard specifies : - flange dimensions necessary for the attachment of part-turn actuators to industrial valves (see Figure 1) or to intermediate supports (see Figure 1) ; - driving component dimensions of part-turn actuators necessary to attach them to the driven components ; - reference values for torques for interfaces and for couplings having the dimensions specified in this standard. The attachment of the intermediate support to the valve is not the subject of this standard. NOTE 1 In this standard the term "valve" may also be understood to include "valve with an intermediate support" (see Figure
1). NOTE 2 When the part-turn actuator is a combination of a multi-turn actuator and a gearbox, the multi-turn actuator attachment to the gearbox should be in accordance with EN ISO 5210.

This document specifies the requirements for the attachment of multi-turn actuators to valves.
Throughout this document, “actuator” may be understood as “actuator and/or gearbox” providing a
multi-turn and/or linear output.
It specifies:
— flange dimensions necessary for the attachment of actuators to industrial valves [see Figure 1 a)] or
to intermediate supports [see Figure 1 b)];
— those driving component dimensions of actuators which are necessary to attach them to the driven
components;
— reference values for torque and thrust for flanges having the dimensions specified in this document.
NOTE 1 In this document, the term “valve” may also be understood to include “valve with an intermediate
support” [see Figure 1 b)].
NOTE 2 When a combination of a multi-turn actuator and separate multi-turn/linear gearbox is coupled to
form an actuator, the multi-turn attachment to the gearbox is in accordance with this document [see Figures 1 c)
and 1 d)]. A combination of a multi-turn actuator with integral multi-turn/linear gearbox supplied as an actuator
is in accordance with Figures 1 a) and 1 b).

The purpose is to establish certain basic requirements for the marking of steam traps, and to give recommendations for additional information markings. Has, in general, to be considered in conjunction with the specific requirements which may be agreed between the partners concerned. Specifies mandatory and optional markings for steam traps.

ISO 15848-1:2015 specifies testing procedures for evaluation of external leakage of valve stem seals (or shaft) and body joints of isolating valves and control valves intended for application in volatile air pollutants and hazardous fluids. End connection joints, vacuum application, effects of corrosion, and radiation are excluded from this part of ISO 15848.
ISO 15848-1:2015 concerns classification system and qualification procedures for type testing of valves.

ISO 28921-2:2015 specifies requirements for the type testing of isolating valves for low-temperature applications to verify the performance of valves at a low temperature from ? 50 °C down to ? 196 °C.
NOTE Nominal sizes (DN), nominal pipe sizes (NPS), nominal pressure (PN) and Classes are covered in ISO 28921‑1.
ISO 28921-2:2015 does not evaluate valve actuators unless they are integral part of the valve. Valves during testing can be operated manually or an actuator can be used during the testing. The effect of cold gas vapours during testing is taken into consideration in particular if the actuator is mounted directly over the test stand with the cold gases engulfing the actuator.
ISO 28921-2:2015 does not apply to valves for cryogenic services, designed in accordance with ISO 21011, used with cryogenic vessels.

This European Standard specifies the face to face (FTF) and centre to face (CTF) dimensions for PN and Class designated metal valves used in flanged pipe systems.
This European Standard covers valves with the following PN, Class and DN values:
-   PN 2,5; PN 6; PN 10; PN 16; PN 25; PN 40; PN 63; PN 100; PN 160; PN 250; PN 320; PN 400;
-   Class 125; Class 150; Class 250; Class 300; Class 600; Class 900; Class 1 500; Class 2 500.
-   DN 10; DN 15; DN 20; DN 25; DN 32; DN 40; DN 50; DN 65; DN 80; DN 100; DN 125; DN 150; DN 200; DN 250; DN 300; DN 350; DN 400; DN 450; DN 500; DN 600; DN 700; DN 750; DN 800; DN 900; DN 1 000; DN 1050; DN 1 200; DN 1 400; DN 1 600; DN 1 800; DN 2 000.
For valves in other shell materials than metal the same FTF and CTF dimensions may be used.

ISO 28921-1:2013 specifies requirements for design, dimensions, material, fabrication and production testing of isolation valves for low-temperature applications. It applies to gate, globe, check, butterfly and ball valves and can be used for other valve types used in low-temperature services.
ISO 28921-1:2013 covers isolation valves for use in cryogenic temperature service where the design low-temperature service is ?50 °C down to ? 96 °C. It covers valves with body, bonnet, bonnet extension or cover made of metallic materials.
ISO 28921-1:2013 covers valves of nominal sizes DN: 10; 15; 20; 25; 32; 40; 50; 65; 80; 100; 125; 150; 200; 250; 300; 350; 400; 450; 500; 600; 650; 700; 750; 800; 850; 900, corresponding to nominal pipe sizes NPS: 3/8; ½; ; 1; 11/4; 11/2; 2; 21/2; 3; 4; 5; 6; 8; 10; 12; 14; 16; 18; 20; 24; 26; 28; 30; 32; 34; 36.
It applies to pressure designations:
PN 16; 25; 40; 100; 160; 250;
Class 150; 300; 600; 800; 900; 1 500.

This European Standard specifies the dimensions of socket welding ends of steel valves designed to be socket welded to standardised pipes in the size range DN 6 to DN 65.

This part of ISO 10767 establishes a test procedure for measuring the source flow ripple and source
impedance of positive-displacement hydraulic pumps. It is applicable to all types of positivedisplacement
pumps operating under steady-state conditions, irrespective of size, provided that the
pumping frequency is in the range from 50 Hz to 400Hz.
Source flow ripple causes fluid borne vibration (pressure ripple) and then airborne noise from
hydraulic systems. This procedure covers a frequency range and pressure range that have been found
to cause many circuits to emit airborne noise which presents a major difficulty in design of hydraulic
fluid power systems. Once the source flow ripple and source impedance of hydraulic fluid power pump
are known, the pressure ripple generated by the pump in the fluid power system can be calculated by
computer simulation using the known ripple propagation characteristics of the system components.
As such, this part of ISO 10767 allows the design of low noise fluid power systems to be realized by
establishing a uniform procedure for measuring and reporting the source flow ripple and the source
impedance characteristics of hydraulic fluid power pumps.
In this part of ISO 10767, calculation is made for blocked acoustic pressure ripple as an example of the
pressure ripple. An explanation of the methodology and theoretical basis for this test procedure is given
in Annex B. The test procedure is referred to here as the two pressures/two systems method. Ratings are
obtained as follows:
a) source flow ripple (in the standard “Norton” model) amplitude, in cubic meter per second[m3/s],
and phase, in degree, over 10 individual harmonics of pumping frequency;
b) source flow ripple (in the modified model) amplitude, in cubic meter per second [m3/s], and phase,
in degree, over 10 individual harmonics of pumping frequency; and its time history wave form,
c) source impedance amplitude, in Newton second per meter to the power of five [(Ns)/m5]., and
phase, in degree, over 10 individual harmonics of pumping frequency;
d) blocked acoustic pressure ripple, in MPa (1 MPa = 106 Pa) or in bar (1 bar = 105 Pa), over 10 individual
harmonics of pumping frequency; and the RMS average of the pressure ripple harmonic f1 to f10.

This part of ISO 15171 specifies dimensions, performance requirements, and test procedures for
diagnostic couplings with an M16 × 2 connection end that can be connected under pressure without
tools to a maximum pressure of 40 MPa (400 bar) providing following stud ends:
— ISO 6149-2 – M14 × 1,5;
— ISO 9974-2 – M14 × 1,5;
— ISO 1179-2 – G 1/4;
— ISO 11926-2 – 7/16-20 UNF.
The dimensions of the coupler counterpart are specified. The coupling is designed for use in hydraulic
systems that use mineral oils.
NOTE The use of this coupling with fluids other than mineral oil requires an agreement between the supplier
and the purchaser.
Couplings in accordance with this part of ISO 15171 may be used at a maximum working pressure
of 63 MPa (630 bar). The working pressure depends upon the materials, design, working conditions,
application, etc.

This International Standard specifies the preferred series of piston strokes for application to singleacting
and double-acting fluid power cylinders. These strokes are mainly used for pneumatic cylinders
but may also be used for hydraulic cylinders.