1、AMSC N/A FSC 4210 MILDTL52404C 5 October 2010 SUPERSEDING MILC52404B 17 August 1977 DETAIL SPECIFICATION CONNECTIONS: HOSE, FIRE AND WATER This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers hose and pipe
2、connections for use in firefighting and water supply systems. 1.2 Classification. The connections will be of the following types, classes, and sizes as specified (see 6.2): Type XIII Siamese connection, pipetohose (Drawing 13218E0469) Size :11/2 inch external (NPT) by 11/2 by 11/2 inch internal (NPS
3、H) Type XIV Siamese connection, fire hose (Drawing 13218E0469) Class A Plain Size :21/2 inch internal (NH) by 21/2 by 21/2 inch external (NH) Class B Gated internal to 2outlet external Size: 21/2 inch internal (NH) by 11/2 by 11/2 inch external (NH) 21/2 inch internal (NH) by 11/2 by 11/2 inch exter
4、nal (NPSH) 21/2 inch internal (NH) by 21/2 by 21/2 inch external (NH) 41/2 inch internal (NH) by 21/2 by 21/2 inch external (NH) Class D Gated internal swivel to 3outlet external Size: 21/2 inch internal swivel (NH) by 11/2 by 11/2 by l1/2 inch external (NH) Class E Gated External to 2outlet interna
5、l swivel Size: 21/2 inch external (NH) by 21/2 by 21/2 inch internal swivel (NH) Comments, suggestions, or questions on this document should be addressed to Defense Supply Center Philadelphia, ATTN: DSCPNASA, 700 Robbins Avenue, Philadelphia, PA 191115096 or email to dscpg with Bolts and SyntheticRu
6、bbers for GroovedEnd Pipe MILITARY SPECIFICATIONS MILA8625 Anodic Coatings, for Aluminum and Aluminum Alloys (Copies of these documents are available online at https:/assist.daps.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 191115094.) 2.
7、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. CEC
8、OM LR CENTER Drawing 13218E0469 Siamese Connections Drawing 13218E0470 Reducer, Hose Drawing 13218E0472 Elbow, Hose Drawing 13218E0473 Nipple, Hose Drawing 13218E0479 Adapter, Straight, Pipe to Hose (Copies of these drawings are available from the CECOM LR Center, 10115 Gridley Rd, Suite 228, Fort B
9、elvoir, VA 22060.) 2.3 NonGovernment publications. The following documents form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. AMERICAN SOCIETY FOR QUALITY (ASQ) ASQ Z1.4 Sampling
10、 Procedures and Tables for Inspection by Attributes Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILDTL52404C 5 (Copies of this document are available from www.asq.org or the American Society for Quality, 611 East Wisconsin Avenue, Milwaukee, WI 5
11、3202.) ASTM INTERNATIONAL ASTM A47/47M Standard Specification for Ferritic Malleable Iron Castings ASTM B16/B16M Standard Specification for FreeCutting Brass Rod, Bar, and Shapes for Use in Screw Machines ASTM B26/B26M Standard Specification for Aluminum Alloy Sand Castings ASTM B124/B124M Standard
12、Specification for Copper and CopperAlloy Forging Rod, Bar, and Shapes ASTM B584 Standard Specification for Copper Alloy Sand Castings for General Applications (Copies of this document are available from www.astm.org or ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 194
13、282959.) NATIONAL FIRE PROTECTION ASSOCIATION (NFPA) NFPA 1963 Standard for Fire Hose Connections (Copies of this document are available from www.nfpa.org or the National Fine Protection Association, 1 Battery March Park, Quincy, MA 022699101.) SAE SAEAMSQQP416 Plating, Cadmium (Electrodeposited) (C
14、opies of this document are available from www.sae.org or from SAE International, 400 Commonwealth Drive), Warrendale, PA 150960001.) UNDERWRITERS LABORATORIES , INC. Fire Protection Equipment List (Copies of this document are available from or the Underwriters Laboratories Inc., 333 Pfingsten Road,
15、 Northbrook, IL 600622096.) 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, the text of this document takes precedence. Nothing in this document, however, supersedes applicable la
16、ws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Description. The connections shall be of heavy cast or forged construction and shall be fabricated of aluminum, brass, or malleable iron, as specified (see 6.2). The waterway openings shall be not less than 90 perc
17、ent of the nominal hose or pipe ID. Lugs shall be of the rocker type and shall fit spanner wrenches conforming to GGGW665, Type IV. The swivels shall be permanently connected to the body in a manner to permit free rotation of the swivel and to prevent leakage. Retaining rings or similar components s
18、hall be of noncorrosive, wearresistant metal. The connections shall withstand a working pressure of 250 psig without permanent deformation or damage. 3.2 First article (preproduction model). The contractor shall furnish one or more connections for examination and testing within the time frame specif
19、ied (see 6.2), to prove prior to starting production that his production methods and choice of design detail will produce connections that comply with the Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILDTL52404C 6 requirements of this specificati
20、on. Examination and tests shall be as specified in Section 4 and shall be subject to surveillance and approval by the Government (see 6.3). 3.3 Material. Material shall be as specified herein. When specified (see 6.2), items which are listed in the current Fire Protection Equipment List of the Under
21、writers Laboratories, Inc. shall be considered as meeting the material requirements of this specification. Materials not specified shall be selected by the contractor and shall be subject to all provisions of this specification (see 6.8). It is encouraged that recycled material be used when practica
22、l as long as it meets the requirements of this specification. 3.3.1 Malleable cast iron. Malleable iron castings shall conform to ASTM A47/A47M, grade optional. 3.3.2 Cast aluminum. Aluminum castings shall conform to ASTM B26/B26M, Alloy 355.0, Condition T6 or Alloy 356.0, Condition T6 or Alloy 535.
23、0. 3.3.2.1 Extruded aluminum. Extruded aluminum shall conform to Alloy 6061T6 or 6262T6. 3.3.2.2 Forged aluminum. Forged aluminum shall conform to Alloy 6262T6. 3.3.2.3 Anodic coatings. All aluminum parts shall be protected by a hard anodic coating conforming to Type III, Class 1 of MILA8625. All su
24、rfaces normally painted shall be painted in accordance with the manufacturers standard practice. 3.3.3 Brass. 3.3.3.1 Brass bars. Brass bars shall conform to ASTM B16/B16M. 3.3.3.2 Drop forged brass. Drop forged brass shall conform to ASTM B124/B124M, Copper Alloy UNS No. C37700. 3.3.3.3 Cast brass.
25、 Brass castings shall conform to ASTM B584, Copper Alloy UNS No. C83600 or C84400. 3.4 Rubber gaskets. Gaskets conforming to NFPA 1963 shall be furnished with each connection having internal threads. 3.5 Threads. All threads shall conform to FEDSTDH28. 3.6 Performance. The connections shall show no
26、evidence of distortion or damage that will affect the serviceability of the connections when subjected to a hydrostatic test pressure of 1,000 psig. 3.7 Plating. All iron surfaces, including threaded and sliding surfaces, shall be cadmium plated in accordance with SAEAMSQQP416, Type I, Class 1. 3.7.
27、1 Unless otherwise specified, all (NH) National Hose Connection shall be chromium plated. 3.8 Identification marking, The connections shall be identified in accordance with the manufacturers standard practices. 3.9 Type XIII, Siamese connection, pipe to hose. Type XIII connection shall have one exte
28、rnal threaded end and two internal threaded swivel ends with rocker lugs and shall be similar to Drawing 13218E0469 and Figure 1. 3.10 Type XIV, Siamese connection, fire hose. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILDTL52404C 7 3.10.1 Clas
29、s A, plain. The Class A, plain Siamese connection shall have one internal threaded swivel end and two external threaded ends, and shall be similar to Drawing 13218E0469 and Figure 2. 3.10.2 Classes B, C, D, and E, gatedSiamese connections. The gatedSiamese connections shall be gated with 1/4turn, lo
30、nghandled, shutoff valves of the fullflow, ball or cylindrical, floatinggland type. The cylindrical floating gland type shall operate through bypasses in the body of the cylinder. The valves shall be operable and leakproof under a pressure of 250 psi, and shall be similar to Drawing l3218E0469 and F
31、igures 3, 5 and 6. 3.11 Type XV, reducer hose. 3.11.1 Class A, double internal. The Class A reducer shall be of the double swivel type similar to Drawing 13218E0470 and Figure 7. When specified (see 6.2), the ends shall be equipped with long handles. 3.11.2 Class B, double external. The Class B redu
32、cer shall be the doubleexternal type consisting of a center piece and two external threaded ends similar to Figure 8 and to Drawing 13218E0470. 3.11.3 Class C, internal to external. The Class C reducer shall be of onepiece construction with an internal threaded end and an external threaded end. The
33、coupling shall be similar to Figure 9 and to Drawing 13218E0470. 3.11.4 Class D, external to internal. The Class D reducer shall be of two types. The 1 inch by inch size shall be onepiece construction similar to Figure 9. The 21/2 inch by l1/2 inch and the 6 inch by 41/2 inch size shall consist of a
34、n external end and an internally threaded swivel end equipped with lugs and shall be similar to Figure 10 and to Drawing 13218E0470. When specified (see 6.2), the ends shall have long arm handles. 3.12 Type XVI, adapter, straight, pipe to hose. 3.12.1 Class A; internal to external. Unless otherwise
35、specified (see 6.2), the Type XVI, Class A adapter shall consist of an internal threaded swivel end and an external threaded end similar to figure 10. When specified (see 6.2), the Type XVI, Class A adapter shall be a rigid onepiece construction without swivel. 3.12.2 Class B, external to internal.
36、The Class B adapter shall be of onepiece construction, shall consist of an external threaded end and an internal threaded end, and shall be similar to Figure 11. A hexagonalshaped wrenching feature shall be provided. 3.12.3 Class C, external to external. The Class C adapter shall be of onepiece cons
37、truction, shall have an external thread on each end, and shall be similar to Figure 12. The center portion shall be provided with a hexagonshaped wrenching feature. 3.12.4 Class D, external to external. The Class D adapter shall be of onepiece construction and shall have an external thread on each e
38、nd. The center piece shall be equipped with rockertype lugs. The adapters shall be similar to Figure 13. 3.12.5 Class E, external to internal. Unless otherwise specified (see 6.2), the Class E adapter shall consist of an external threaded end and an internal threaded swivel end equipped with lugs. W
39、hen specified (see 6.2), the external threaded end shall be provided with a cap attached to the main body by a matching metal chain. When specified (see 6.2), the adapter shall be rigid, onepiece construction without swivel. The adapters shall be similar to Figure 14. 3.12.6 Class F, external to int
40、ernal. The Class F adapter shall be of onepiece construction with one 6 inch internal threaded end equipped with lugs and one 6 inch external grooved end. The 6 inch grooved end shall conform to the dimensions and tolerances specified in AA52598. The grooved adapter shall be similar to Figure 15. Pr
41、ovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILDTL52404C 8 3.12.7 Class G, external to internal. The Class G adapter shall be of onepiece construction and shall have one external and one internal threaded end. The Internal threaded end shall be equ
42、ipped with lugs. The adapter shall be similar to Figure 16. 3.12.8 Class H, internal to external. The Class H adapter shall be of onepiece construction and shall have one internal and one external threaded end. The internal threaded end shall be equipped with lugs and shall be similar to Figure 16.
43、3.13 Type XVII, coupling, hose. The couplings shall be similar to Drawing 13218E0471 and Figures 17 and 18. 3.13.1 Class A, double internal, plain. The Class A coupling shall be of the doubleswivel type consisting of a center piece and two internal threaded swivel ends equipped with lugs. The 41/2 i
44、nch size shall have long arm handles. 3.13.2 Class B, internal to external, gated. The Class B coupling shall consist of a centerpiece in which is located a valve with a handle, an internal threaded swivel end equipped with lugs, and an external threaded end. The valve shall be of the slidinggate ty
45、pe with a fullsize waterway. The valves shall be operable and leakproof under a pressure of 250 psi. 3.14 Type XVIII, elbow, hose, 45degree swivel type, internal to external. The hose elbow connection shall consist of a 45degree elbow with one external threaded end and one internal threaded swivel e
46、nd equipped with lugs. The elbow shall be similar to Figure 19 and to Drawing 13218E0472. 3.15 Type XIX, nipple hose: double external. The hose nipple shall be of onepiece construction and shall consist of two external threaded ends on a center section equipped with lugs. The nipple shall be similar
47、 to Figure 20 and to Drawing 13218E0473. 3.16 Workmanship. All parts, components, and assemblies of the connections including castings, forgings, and machined surfaces shall be clean and free from sand, dirt, fins, pits, sprues, scale, or other harmful extraneous material. All edges shall be rounded
48、 or beveled, with no sharp, ragged, or rough edges. 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements specified herein are classified as follows: (a) Preproduction inspection (see 4.2). (b) Conformance inspection (see 4.3). 4.2 Preproduction inspection. 4.2.1 Examination
49、. The preproduction connections shall be examined as specified in 4.4.1. Presence of one or more defects shall be cause for rejection. 4.2.2 Tests. The preproduction connections shall be tested as specified in 4.4.2. Failure of any test shall be cause for rejection. 4.3 Conformance inspection. 4.3.1 Lot . F
