MIL-DTL-18182F
2.0 APPLICABLE DOCUMENTS
2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification.
This section does not include documents cited in other sections of this specification or recommended for
additional information or as examples. While every effort has been made to ensure the completeness of
this list, document users are cautioned that they must meet all specified requirements documents cited in
sections 3 and 4 of this specification, whether or not they are listed.
2.2 Non-Government publications. The following documents form a part of this document to the extent
specified herein. Unless otherwise specified, the issues of the documents which are DOD adopted are
those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of
documents not listed in the DODISS are the issues of the documents which are current on the date of the
solicitation (see 6.2).
AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)
ASME/ANSI B1.20.1
-
Pipe Threads, General Purpose (Inch).
ASME/ANSI B36.10M
-
Welded and Seamless Wrought Steel Pipe.
rd
(Application for copies should be addressed to the American National Standards Institute, 25 West 43
th
Street, 4 Fl., New York, NY 20036).
AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)
ASTM-A105/A105M
-
Forgings, Carbon Steel, for Piping Components.
ASTM-A153/A153M
-
Zinc Coating (Hot-Dip) on Iron and Steel Hardware.
ASTM-A181/A181M
-
Forged or Rolled Steel Pipe Flanges, Forged Fittings,
and Valves and Parts for General Service.
(Application for copies should be addressed to the American Society for Testing and Materials, 100 Barr
Harbor Drive, West Conshohocken, Pennsylvania, 19428-2959).
MANUFACTURERS STANDARDIZATION SOCIETY (MSS) OF THE VALVE AND FITTINGS
INDUSTRY
MSS SP-25 - Standard Marking System for Valves, Fittings, Flanges, and Unions.
MSS SP-83 - Class 3000 Carbon Steel Pipe Unions Socket-Welding and Threaded.
(Application for copies should be addressed to the Manufacturers Standardization Society of the Valve
and Fittings Industry Inc., 127 Park Street, N.I., Vienna, VA 22180).
(Non-Government standards and other publications are normally available from the organizations that
prepare or distribute the documents. These documents also may be available in or through libraries or
other informational services).
2.3 Order of precedence. In the event of a conflict between the text of this document and the references
cited herein (except for associated detail specifications, specification sheets or MS standards), the text of
this specification takes precedence. Nothing in this specification, however, supercedes applicable laws
and regulations unless a specific exemption has been obtained.
3.0 REQUIREMENTS
3.1 Description. The union shall consist of a thread-piece provided with a female union seat, a nut-piece
provided with a male union seat, and a union coupling nut. Union seats shall be of the ground joint type.
The style A union shall be threaded with American Standard taper pipe threads (NPT) female at both
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