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SAE - AS85421C

Fittings, Tube, Fluid Systems, Separable, Beam Seal, 3000/4000 psi, General Specification for

active, Most Current
Organization: SAE
Publication Date: 1 May 2021
Status: active
Page Count: 23
scope:

This specification covers the design requirements and test procedures for separable beam seal fittings which includes end fittings (see 2.3.4), fitting bodies (see 2.3.7), and boss fittings (see 2.3.2) for use in aerospace fluid systems. Design requirements are for class 3000 in corrosion resistant steel (15-5 PH, 17-4 PH CRES) only and for class 4000 in titanium alloy (Ti) and corrosion and heat-resistant steel (nickel alloy 718 CRES) only. Definition of fittings and related terms are defined in 2.3.

Classification

Fittings shall be of the following type and pressure classes of the hydraulic system as specified below:

Type

As defined in hydraulic system specifications AS5440 and AS8775.

a. Type II System: Temperature range -65 to +275 °F (-54 to +135 °C).

b. Type IV System: Temperature range -65 to + 630 °F (nickel alloy 718 fittings only).

Pressure Classes

a. Class 3000: 3000 psi (21000 kPa) nominal operating pressure where the cutout pressure at the main pressure controlling device is 3000 psig (21000 kPa) ± 15%.

b. Class 4000: 4000 psi (28000 kPa) nominal operating pressure where the cutout pressure at the main pressure controlling device is 4000 psig (28000 kPa) ± 15%.

intended Use:

The fittings covered by this specification are intended for use in aircraft hydraulic high pressure fluid systems under the conditions specified in 1.2.

Document History

AS85421C
May 1, 2021
Fittings, Tube, Fluid Systems, Separable, Beam Seal, 3000/4000 psi, General Specification for
This specification covers the design requirements and test procedures for separable beam seal fittings which includes end fittings (see 2.3.4), fitting bodies (see 2.3.7), and boss fittings (see...
July 1, 2018
(R) Fittings, Tube, Fluid Systems, Separable, Beam Seal, 3000/4000 psi, General Specification For
This specification covers the design requirements and test procedures for separable beam seal fittings which includes end fittings (see 2.3.4), fitting bodies (see 2.3.7), and boss fittings (see...
January 1, 2007
Fittings, Tube, Fluid Systems, Separable, Beam Seal, 3000/4000 psi, General Specification For (Supplement 1)
This supplement forms a part of SAE Aerospace Specification AS85421. It shall be used to identify fitting standards citing this procurement specification.
January 1, 2007
(R) Fittings, Tube, Fluid Systems, Separable, Beam Seal, 3000/4000 psi, General Specification For
This specification covers the design requirements and test procedures for separable beam seal fittings which includes end fittings (see 2.3.3), fitting bodies (see 2.3.6), and boss fittings (see...
January 1, 2007
Fittings, Tube, Fluid Systems, Separable, Beam Seal, 3000/4000 psi, General Specification For (Supplement 1)
This supplement form a part of SAE Aerospace Specification AS85421. it shall be used to identify fitting standards citing this procurement specification.
January 1, 2007
(R) Fittings, Tube, Fluid Systems, Separable, Beam Seal, 3000/4000 psi, General Specification For
This specification covers the design requirements and test procedures for separable beam seal fittings which includes end fittings (see 2.3.3), fitting bodies (see 2.3.6), and boss fittings (see...
July 1, 1998
Fittings, Tube, Fluid Systems, Separable, Beam Seal, 3000/4000 psi, General Specification for
This specification covers the design requirements and test procedures for separable beam seal fittings which includes end fittings (see 6.10.3), fitting bodies (see 6.10.6), and boss fittings (see...

References

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