BS ISO 19631:2015 pdf download

BS ISO 19631:2015 pdf download.Aerospace series — Tube fittings for fluid systems, 5 080 psi (35 000 kPa) — Qualification specification
1 Scope
This International Standard specifies performance and quality requirements for the qualification and manufacture of standard tube fittings to ensure reliable performance in aircraft hydraulic 5 080 psi (35 000 kPa) systems.
This International Standard specifies baseline criteria for the design and manufacture of system fittings that are qualification tested on engines.
This International Standard covers fittings from size –04 to –20 used for the following:
— separable/permanent pipe end fittings;
— permanent connection fittings;
— separable connection fittings.
This International Standard covers fittings of the temperature types and pressure classes specified in ISO 6771.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 2685, Aircraft — Environmental test procedure for airborne equipment — Resistance to fire in designated fire zones
ISO 6772, Aerospace — Fluid systems — Impulse testing of hydraulic hose, tubing and fitting assemblies
ISO 6773, Aerospace — Fluid systems — Thermal shock testing of piping and fittings
ISO 7137, Aircraft — Environmental conditions and test procedures for airborne equipment
ISO 7257, Aircraft — Hydraulic tubing joints and fittings — Rotary flexure test
ISO 10583:1993, Aerospace fluid systems — Test methods for tube/fitting assemblies
EUROCAE ED-14E/RTCA DO-160E, Section 22, Lightning Induced transient Susceptibility
3 Requirements
3.1 Qualification
Fittings claiming conformity with this International Standard shall be representative of products,which have successfully met the requirements and have passed the tests in this International Standard.
3.1.1 Manufacturer qualification
Manufacturer approval shall be granted by purchaser qualification procedure.
Outside agency procedure can be used if no specific procedure exists (see Annex A, Table A.3,Procedure 1).
3.1.2 Product qualification
Product approval shall be granted by purchaser qualification procedure.
Outside agency procedure can be used if no specific procedure exists (see Annex A, Table A.3,Procedure 1).
3.2 Materials
3.2.1 Fittings
Fitting parts shall be manufactured from materials as given in Table 1 or equivalent passing the specified tests. The various materials shall be used according to the pressure and temperature requirements of the system, as shown in Table 2.