MIL-DTL-23953D(SH)
MIL-STD-798
-
Nondestructive Testing, Welding, Quality Control, Material Control, and
Identification and HI-Shock Test Requirements for Piping System
Components for Naval Shipboard Use
MIL-STD-1308
-
Material Application and Processing Requirements
(Copies of these documents are available online at https://quicksearch.dla.mil/.)
2.2.2 Other Government documents, drawings, and publications. The following other Government documents,
drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified,
the issues of these documents are those cited in the solicitation or contract.
NAVAL SEA SYSTEMS COMMAND (NAVSEA) DRAWINGS
803-1385884
-
Unions, Fittings, and Adapters Butt and Socket Welding, 6,000 PSI,
WOG, and OXY IPS
803-8436621
-
Valve, Assembly and Details, 2.00 & 2.50 EMBT Vent-Check
(Copies of these documents are available from the applicable repositories listed in S0005-AE-PRO-010/EDM.
Copies of S0005-AE-PRO-010/EDM are available online at https://nll2.ahf.nmci.navy.mil.)
NAVAL SEA SYSTEMS COMMAND (NAVSEA) PUBLICATIONS
0948-LP-045-7010
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Material Control Standard
S9074-AR-GIB-010/278
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Requirements for Fabrication Welding and Inspection, and Casting
Inspection and Repair for Machinery, Piping, and Pressure Vessels
T9074-AS-GIB-010/271
-
Requirements for Nondestructive Testing Methods
(Copies of these documents are available online at https://nll2.ahf.nmci.navy.mil. These publications can be located
by searching the Navy Publications Index for the TMIN without the suffix.)
2.3 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, 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 Qualification. Valves furnished under this specification shall be products that are authorized by the
qualifying activity for listing on the applicable Qualified Products List (QPL) before contract award (see 4.2 and
3.2 Valve description. Valves shall be spring-loaded check valves installed to prevent seawater backflow into
submarine MBT high-pressure air blow lines. A vent shall be incorporated to automatically open when the check
poppet closes and thus eliminate residual upstream pressure and assure maximum seating differential across the
check poppet. The vent shall close against upstream pressures as high as 4,500 pounds per square inch gage (psig)
when the check poppet is open. Detailed valve description is provided in 803-8436621.
3.3 Service and ambient conditions. Service and ambient conditions shall be as follows:
Fluid: Outlet air and seawater, inlet air
a.
b.
Maximum working pressure (inlet and outlet): 4,500 psig
c.
Working temperature: -100 to +160 °F
d.
Salt spray: external exposure to atmosphere containing salt-laden moisture
e.
Vibration: environmental vibration in accordance with Class 1 of MIL-STD-167-1 (see 3.6.8 and 4.4.20)
f.
g.
h.
3.4 Materials. Materials shall be as specified in 803-8436621.
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