MIL-DTL-24630A(SH)
SAE-AS5782
-
Retainers (Backup Rings), Hydraulic and Pneumatic,
Polytetrafluoroethylene Resin, Solid, Un-Cut, for Use in AS4716 Glands
SAE-AS8791
-
Hydraulic and Pneumatic Retainers (Back-Up Rings),
Polytetrafluoroethylene (PTFE) Resin
(Copies of these documents are available online at www.sae.org.)
2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between
the text of this document and the references cited herein (except for related specification sheets), the text of this
document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless
a specific exemption has been obtained.
3. REQUIREMENTS
3.1 Specification sheets. The individual valve requirements shall be as specified herein and in accordance with
the applicable specification sheet. In the event of any conflict between the requirements of this specification and the
specification sheet, the latter shall govern.
3.2 Qualification. The valves furnished under this specification shall be products that are authorized by the
qualifying activity for listing on the applicable qualified products list before contract award (see 4.2 and 6.3).
3.3 Materials. Unless otherwise specifically approved prior to qualification inspection by the qualifying
activity, materials shall be limited to those specified herein and on applicable specification sheets. Metals shall be
compatible with the fluid, temperature, service, and performance requirements specified herein.
3.3.1 Corrosion-resisting steel. Corrosion-resisting steel shall conform to Class 304, 304L, 316, or 316L,
Condition A in accordance with SAE-AMS-QQ-S-763 or Type 303 in accordance with ASTM A582/A582M.
3.3.1.1 Nickel-copper alloy. Nickel-copper alloy shall conform to Class A, Form 1, hot finished or cold drawn
in accordance with QQ-N-281.
3.3.1.2 Copper-nickel alloy. Copper-nickel alloy shall conform to Composition 70-30 as specified in
MIL-C-15726 or as specified in Type I, Alloy B (70/30 Cu Ni C96400) of ASTM B369.
3.3.2 Preformed packing (O-rings). O-rings shall be fluorocarbon rubber in accordance with SAE-AMS7276.
3.3.3 Backup rings. Backup rings for new designs shall be in accordance with SAE-AS5781 or SAE-AS5782
for use in O-ring glands conforming to SAE-AS4716. Backup rings that conform to SAE-AS8791 are permitted for
use in existing valve designs that have O-ring glands conforming to MIL-G-5514.
3.3.4 Prohibited materials. The following materials shall not be used:
a.
Toxic materials.
b.
Zinc or zinc plated materials.
c.
Mercury (see 3.3.4.1).
d.
Magnesium or magnesium base alloys.
e.
Radioactive materials.
f.
Asbestos.
g.
Cadmium.
h.
Beryllium.
3.3.4.1 Mercury. Mercury, in any form, shall not be used in shipboard equipment, including materials and
parts thereof. Mercury shall not be used in manufacturing and test processes (including test equipment such as
mercury thermometers) applying to the basic valve but may be used in the manufacturing and test processes for
materials and parts provided it is used in such a way that contamination of the materials and parts themselves cannot
result.
4
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business