EN 2608:2005 – Aerospace series – Installation and removal requirements for 8° 30′ adaptors, threaded, with lockring
1 Scope
This standard specifies the installation and removal requirements for adaptors, threaded, with lockring for pipe couplings 8°30′ according to EN 2603.
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 8°30′ interface according to EN 2604.
This procedure is used for adaptors 8°30′, for nominal pressure up to 28 000 kPa to install the adapters according to EN 3248, EN 3270 and EN 3566.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document
(including any amendments) applies.
ISO 5855-1, Aerospace — MJ threads — Part 1: General requirements
ISO 5855-3, Aerospace — MJ threads — Part 3: Limit dimensions for fluid systems
EN 2435-01, Aerospace series — Paints and varnishes — Corrosion resistant chromated two component cold curing primer — Part 01: Minimum requirements
EN 2602, Aerospace series — Ports for adaptors, threaded, with lockring — Geometric configuration
EN 2603, Aerospace series — Port ends for adaptors, threaded, with lockring — Geometric configuration
EN 2604, Aerospace series — 8°30′ interface for adaptors, threaded, with lockring — Geometric configuration
EN 2645, Aerospace series — Lockrings for adaptors, threaded, with lockring — Dimensions
EN 3248, Aerospace series — Pipe coupling 8°30′ in titanium alloy — Adaptors, reduced pipe end, with lockring
EN 3270, Aerospace series — Pipe coupling 8°30′ in titanium alloy — Blanking plugs with lockring
EN 3566, Aerospace series — Pipe coupling 8°30′ in titanium alloy — Adaptors with lockring
EN 3663, Aerospace series — Pipe coupling — O-rings in rubber NBR, 75 IRHD — Temperature range: − 55 °C to +135 °C
MIL-H-5606, Hydraulic fluid, petroleum base; aircraft, missile and ordnance 1)
MIL-H-83282, Hydraulic fluid, fire resistant, synthetic hydrocarbon base, metric, NATO number H-537 1)
MIL-H-87257, Hydraulic fluid, fire resistant, low temperature, synthetic hydrocarbon base, aircraft and missile 1)
3 Installation instructions
3.1 Engineering information
3.2 Port preparation
The manufacturing sequence of port preparation is for information only.
Qualification of the assembly is required for each manufacturing sequence and type of tool for a given port material installation method and nominal pressure.
The hole shall conform to EN 2602, using the applicable tools for
tap drilling
port machining
serration broaching
thread cutting
NOTE The design office may specify a hole without serration pre-broaching, when low resistance material is used.
EN 2608:2005 – Aerospace series – Installation and removal requirements for 8° 30′ adaptors, threaded, with lockring