This document defines the geometry of the interface of removable 24° cone couplings for fluid systems in aircraft. The connection with the pipe of each one of the connecting elements can be of different design. This document specifies the dimensions which allow the interchangeability of the male and female elements and of the nut used for the connection. The dimensions define the maximum volume of the male fitting.

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This document establishes a system for sealing the port connection of couplings used in the aerospace industry. It specifies dimensions to achieve interchangeability of the port connection, the fitting end and a seal. The seal can be a standard O‑ring or a special ring.

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This document specifies the dimensions of a hose assembly which is in accordance with ISO 7313.
The hose assembly couples to the fittings specified in EN 3274, which are made out of titanium.
The hose is protected either by means of an anti-abrasive, anti-shock and anti-projection sleeve or by means of a fire resistant or fire proof sleeve in accordance with ISO 2685.

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This document establishes the general requirements for variable displacement uni-directional and bi-directional hydraulic motors, suitable for use in aircraft hydraulic systems at pressures up to 35 000 kPa (5 000 psi). These requirements include: — design requirements; — test requirements. Primary and secondary function motors (see Clause 4) are covered in this document; however, actuators with internal rotation angle limits and low-speed motors are not covered. This document is intended to be used in conjunction with the detail specification that is particular to each application.

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This document defines the requirements of ethylene propylene elastomer (EPM/EPDM) for seal elements for use as static seals in hydraulic systems using phosphate ester fluids, hardness 80 IRHD (International Rubber Hardness Degree) for long term application for aerospace application.
Unless otherwise specified in the drawing, order or inspection schedule, this document shall be used in conjunction with the referenced documents.
Applicable temperature range:
- Continuous service: −55 °C to 107 °C
- Intermittent service: −55 °C to 120 °C

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This document specifies the dimensions, tolerances and required characteristics of protective plugs,
non-metallic, for NAS1760 fitting ends and AS33649 boss ports to seal fluid ports during transportation
and storage in order to prevent
 contamination by moisture, fluids, chemicals and particles,
 spillage inside package or aircraft section,
 port and pipe end damages and
 port and pipe clogging due to plug ingestion.
Because of the cleanliness requirements, parts shall only be used once.

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This document specifies the dimensions, tolerances and required characteristics of protective caps, non metallic, for EN 6123 fitting ends to seal fluid ports during transportation and storage in order to prevent:
- contamination by moisture, fluids, chemicals and particles;
- spillage inside package or aircraft section;
- port and pipe end damages;
- port and pipe clogging due to plug ingestion.
Because of the cleanliness requirements, parts shall only be used once.

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This document specifies the dimensions, tolerances and required characteristics of protective plugs, non metallic, for EN 6123 fitting ends to seal fluid ports during transportation and storage in order to prevent:
- contamination by moisture, fluids, chemicals and particles;
- spillage inside package or aircraft section;
- port and pipe end damages;
- port and pipe clogging due to plug ingestion.
Because of the cleanliness requirements, parts shall only be used once.

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This document specifies the dimensions of connections for starting aircraft engines by air, which are necessary to ensure international interchangeability of connectors with adaptors. lt also gives the minimum clearances required on the aircraft to provide adequate access for the ground adaptor.

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This document specifies characteristics of hose assemblies with corrosion‑resistant metallic braid and convoluted polytetrafluoroethylene (PTFE) inner tube for use in aircraft fluid systems at temperatures between ‑55 °C and +200 °C and at nominal pressures, depending on bore size, up to 6,8 MPa. Special approval from the proper national authority can be required if these hoses are to be part of a pressurized gas storage system. Two types of hose assembly are covered in this document: — Type 1: Non‑conductive inner tube; and — Type 2: Conductive inner tube.

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This document establishes the general requirements for a linear hydraulic utility actuator, herein referred to as a "utility actuator", for use in flight vehicle hydraulic systems at pressures up to 35 000 kPa (5 000 psi). These requirements include: — design requirements; — test requirements. This document is intended to be used in conjunction with the detail specification that is particular to each application. NOTE Although Brake pistons and Landing Gear Bogie (Truck) Pitch Trimmers are utility actuators, they are outside the scope of this document. This is because these devices are considered to be specialist actuator devices due to their specific duty cycles requiring a separate set of tailored requirements.

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This European standard specifies the designation method for hose assemblies within 15 digits.

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This European standard specifies the designation method for hose assemblies within 15 digits.

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This European standard specifies the required characteristics, inspection and test methods, quality
assurance and procurement requirements for metric series 8°30’ dynamic beam seal pipe couplings, for
temperature ranges type II and III according to ISO 6771 and nominal pressure up to 28 000 kPa.

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This European standard specifies the required characteristics, inspection and test methods, quality
assurance and procurement requirements for metric series 8°30’ dynamic beam seal pipe couplings, for
temperature ranges type II and III according to ISO 6771 and nominal pressure up to 28 000 kPa.

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This document establishes the general requirements for constant displacement hydraulic motors, suitable for use in aircraft hydraulic systems at pressures up to 35 000 kPa (5 000 psi). Primary and secondary function motors (see Clause 4) are covered in this document; however, actuators with internal rotation angle limits and low-speed motors are not covered. This document is to be used in conjunction with the detail specification that is particular to each application.

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This European Standard defines the requirements for moulded elastomer seal elements for use in hydraulic systems using phosphate ester fluids for aerospace application. It shall be applied in conjunction with relevant material standards unless otherwise specified on the drawing, order, inspection schedule or contractual document.

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This European Standard specifies the dimensions, tolerances and the required characteristics of a fitting end, 24° cone, external thread, flareless type, size −32 for use in hydraulic and fluid systems at 220 psi, diameter D = 2 inches (D = 50,8 mm) for aerospace applications.
This is a design standard, not valid for order.
This fitting can not be used for plug in union.

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This standard specifies the dimensions, tolerances, required characteristics and the mass of an adaptor, flareless tube end EN 6123, ring locked type, for use in 35 000 kPa (5 080 psi) working pressure systems.

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This European Standard specifies the dimensions, tolerances, required characteristics and the mass of a reducer, flareless tube end EN 6123, ring locked type, for use in 35 000 kPa (5 080 psi) working pressure systems.

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This European Standard specifies the installation and removal requirements for adaptors and
reducers, threaded, with lockring for pipe couplings 24° according to EN 4833 and EN 4836.
This standard establishes an accurate procedure of adaptor installation, removal and reinstallation to
ensure the repeatability of the installation operation and to ensure the effective compliance to sealing
and locking requirements.
The adaptor shown on all Figures of this standard is given as an example for the 24° internal cone
interface according to EN 6123.
This procedure is used for adaptors 24°, for nominal pressure up to 35 000 kPa (5 080 psi).

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This standard specifies the characteristics of the pipe coupling adapter, 60° spherical sealing face manufactured in titanium alloy with locking ring, for installing in a boss for aerospace applications.
These adapters shall be installed into port connections manufactured in accordance with EN 2602 using ISO 3601-1 sealing O-rings selected sizes. O-ring material depends on the system fluid and operation conditions. The installation shall be performed in accordance with EN 2608.
Nominal working pressure: up to 28000 kPa.
Temperature range: limited by elastomeric sealing ring, −54 °C to +135 °C

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This specification establishes the requirements for ring locked fitting assemblies according to EN 4833
and EN 4836, for use in aircraft systems at nominal operating pressure of 35 000 kPa (5 080 psi)
maximum and temperature range of −54 °C to +135 °C (−65 °F to +275 °F).

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This standard specifies the dimensions, tolerances and requirements of a port for a fluid connection with ring locked fitting, for use in aircraft systems at nominal operating pressure of 35 000 kPa (5 080 psi) maximum and temperature range of −54 to +135 °C (−65 to +275 °F).

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This European Standard defines the requirements for moulded elastomer seal elements for use in hydraulic systems using phosphate ester fluids for aerospace application. It shall be applied in conjunction with relevant material standards unless otherwise specified on the drawing, order, inspection schedule or contractual document.

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This document specifies best practice for sampling hydraulic fluid from aircraft hydraulic systems and other hydraulic systems associated with aerospace purposes.

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This European Standard specifies the dimensions, tolerances and the required characteristics of a fitting end, 24° cone, external thread, flareless type, size −32 for use in hydraulic and fluid systems at 220 psi, diameter D = 2 inches (D = 50,8 mm) for aerospace applications.
This is a design standard, not valid for order.
This fitting can not be used for plug in union.

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This European Standard specifies the installation and removal requirements for adaptors and
reducers, threaded, with lockring for pipe couplings 24° according to EN 4833 and EN 4836.
This standard establishes an accurate procedure of adaptor installation, removal and reinstallation to
ensure the repeatability of the installation operation and to ensure the effective compliance to sealing
and locking requirements.
The adaptor shown on all Figures of this standard is given as an example for the 24° internal cone
interface according to EN 6123.
This procedure is used for adaptors 24°, for nominal pressure up to 35 000 kPa (5 080 psi).

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This standard specifies the dimensions, tolerances and requirements of a port for a fluid connection with ring locked fitting, for use in aircraft systems at nominal operating pressure of 35 000 kPa (5 080 psi) maximum and temperature range of −54 to +135 °C (−65 to +275 °F).

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This European Standard specifies the dimensions, tolerances, required characteristics and the mass of a reducer, flareless tube end EN 6123, ring locked type, for use in 35 000 kPa (5 080 psi) working pressure systems.

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This standard specifies the characteristics of the pipe coupling adapter, 60° spherical sealing face manufactured in titanium alloy with locking ring, for installing in a boss for aerospace applications.
These adapters shall be installed into port connections manufactured in accordance with EN 2602 using ISO 3601-1 sealing O-rings selected sizes. O-ring material depends on the system fluid and operation conditions. The installation shall be performed in accordance with EN 2608.
Nominal working pressure: up to 28000 kPa.
Temperature range: limited by elastomeric sealing ring, −54 °C to +135 °C

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This standard specifies the dimensions, tolerances, required characteristics and the mass of an adaptor, flareless tube end EN 6123, ring locked type, for use in 35 000 kPa (5 080 psi) working pressure systems.

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This specification establishes the requirements for ring locked fitting assemblies according to EN 4833
and EN 4836, for use in aircraft systems at nominal operating pressure of 35 000 kPa (5 080 psi)
maximum and temperature range of −54 °C to +135 °C (−65 °F to +275 °F).

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This document specifies the characteristics of thrust wire nuts for pipe couplings 8°30', in titanium alloy, for aerospace applications.
Nominal pressure: up to 28 000 kPa.
Temperature range: −55 °C to 135 °C.

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ISO 8625-3:2018 defines general terms relating to temperature in fluid systems used in aerospace construction.

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ISO 8625-1:2018 defines general terms relating to pressure in fluid systems used in aerospace construction.

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ISO 8625-2:2018 defines general terms relating to flow in fluid systems used in aerospace construction.

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ISO 22431:2018 specifies the dimensions of the dynamic beam seal end for welded ferrules for pipe couplings 8°30′, nominal pressure up to 28 000 kPa, for aerospace applications.

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ISO 22438:2018 specifies the characteristics of thrust wires for attaching thrust wire nuts onto tees and elbows for pipe couplings 8°30′, for aerospace applications.

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ISO 22437:2018 specifies the characteristics of nuts for welded ferrules, for pipe couplings 8°30′, in titanium alloy, for aerospace applications. Nominal pressure: up to 28 000 kPa Temperature range: −55 °C to 135 °C

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ISO 22433:2018 specifies the dimensions of the dynamic beam seal end for elbows, tees and crosses for pipe couplings 8°30′, nominal pressure up to 28 000 kPa, for aerospace applications.

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ISO 22436:2018 specifies the characteristics of the thread end for 8°30′ pipe couplings, nominal pressure up to 28 000 kPa, for aerospace applications.

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This standard specifies the characteristics of gasket seal with nickel alloy C seal on heat resisting steel, 3 holes, for pipe couplings for inch series aerospace applications.
Nominal pressure: up to 21 000 kPa; depends on the associated tube material and tube wall thickness in the assembly (see EN 4814).
Temperature range: - 55 °C to 600 °C.
NOTE   Assembly in accordance with TR 4815.
This part should not be reused after disassembling.

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This European Standard specifies the characteristics of swivel flanges, 4 holes, for pipe couplings in nickel
alloy for inch series aerospace applications.
Nominal pressure: up to 21 000 kPa; depends on the associated seal, tube material, tube diameter and tube
wall thickness in the assembly (see EN 4814).
NOTE Assembly in accordance with TR 4815.

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This European Standard specifies the characteristics of straight welded couplings in heat resisting steel for
swivel flange couplings for inch series aerospace applications.
Nominal pressure: The parts shall withstand nominal pressures given in Table 1. The nominal pressure of
the assembly depends on associated seal, tube material characteristics, tube diameter and tube wall
thickness (see EN 4814).
NOTE Assembly in accordance with TR 4815.

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This European Standard specifies the characteristics of straight welded coupling in nickel alloy for swivel
flange couplings for inch series aerospace applications.
Nominal pressure: The parts shall withstand nominal pressures given in Table 1. The nominal pressure of
the assembly depends on associated seal, tube material characteristics, tube diameter and tube wall
thickness (see EN 4814).
NOTE Assembly in accordance with TR 4815.

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This standard specifies the characteristics of gasket seal with nickel alloy C seal on heat resisting steel,
4 holes, for pipe couplings for inch series aerospace applications.
Nominal pressure: up to 21 000 kPa; depends on the associated tube material and tube wall thickness in the
assembly (see EN 4814).
Temperature range: −55 °C to 600 °C.
NOTE Assembly in accordance with TR 4815.
This part should not be reused after disassembling.

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This European Standard specifies the characteristics of gasket seal with fluorocarbon seal on aluminium
plate, 3 holes, for pipe couplings for inch series aerospace applications.
Nominal pressure: up to 21 000 kPa; depends on the associated tube material and tube wall thickness in the
assembly (see EN 4814).
Temperature range: −20 °C to 200 °C.
NOTE Assembly in accordance with TR 4815.
This part should not be reused after disassembling.

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This standard specifies the characteristics of gasket seal with fluorocarbon seal on aluminium plate, 4 holes,
for pipe couplings for inch series aerospace applications.
Nominal pressure: up to 21 000 kPa; depends on the associated tube material and tube wall thickness in the
assembly (see EN 4814).
Temperature range: −20 °C to 200 °C.
NOTE Assembly in accordance with TR 4815.
This part should not be reused after disassembling.

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