MIL-DTL-5513D
4.7.14 Burst pressure (see 3.4.13). Swivels when subjected to burst pressure shall meet the
requirements of 3.4.13. The following details shall apply:
a. Hydrostatic pressure shall be applied at a rate not greater than 25,000 psi (172 MPa) per minute
until the burst pressure specified in table III is reached.
b. The swivel joint shall be serviced with test fluid maintained at elevated temperature as specified
in table VIII for the respective swivel joint types.
c. Rupture of the assembly at any pressure below the specified burst pressure, see table III, shall
be cause for rejection.
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the
contract or order (see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor
personnel, these personnel need to contact the responsible packaging activity to ascertain packaging
requirements. Packaging requirements are maintained by the Inventory Control Point's packaging activity
within the Military Service or Defense Agency, or within the Military Service's System Commands.
Packaging data retrieval is available from the managing Military Department's or Defense Agency's
automated packaging files, CD-ROM products, or by contacting the responsible packaging activity.
6. NOTES
6.1 Intended use. The swivel joints covered by this specification are intended for use in hydraulic
systems conforming to SAE-AS5440 (types I II, and IV), or MIL-H-8891 (type III) to provide a connection
between fluid carrying lines and a hydraulic unit where swiveling action of the lines with respect to the unit
or other lines may occur. These swivels are military unique because they must be able to withstand
20 g's of shock and temperatures of -65°F to +450°F (-55°C to +232°C) commercial swivels are not
designed to withstand these harsh conditions.
6.2 Ordering data. Procurement documents should specify the following:
a.
Title, number, and date of this specification.
b.
PIN
c.
d.
Lot records if required (see 4.4.1).
e.
Name and address of the first article inspection test facility to which first article samples, if
required, are to be forwarded (see 4.5.6) and the name and address of the Government activity
responsible for conducting the first article inspection program (see 6.3).
g. Required torque values for 4000 and 5000 psi swivel joints (see table IV).
i. Special cleanliness levels if required (see 6.4).
j. Packaging requirements (see 5.1).
6.3 First article. The contracting officer should include specific instructions in acquisition documents
regarding arrangements for examinations, approval of first article test results, and disposition of first
article samples. Invitations for bids should provide that the Government reserves the right to waive the
requirement for samples for first article inspection to those bidders offering a product which has been
previously acquired or tested by the Government, and that bidders offering such products, who wish to
rely on such production or test, must furnish evidence with the bid that prior Government approval is
presently appropriate for the pending contract.
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