NAVY MIL-H-19387 A-1970 HEADS SPRINKLER AND WASHDOWN《洒水器和彻底冲洗冲头》.pdf
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1、, i s_:1:b :?v I u.L l-/.UJ .11 .l.C.Cc:lDC CU Dc:l.l.C j - -distribution is unlimited. I MILITARY SPECIFICATION HEADS; SPRINKLER AND WASnOOWN 1. SCOPE MIL-H-19387A(SHIPS) 20 July 1970 SUPERSEDING UT_U_ftO/eun -n-.V“.l.Cwl 9 October 1956 (See 6.4) _ J_t_ :P: _ :;:i: :_sprink1er heads for use in fire
2、 xtinguisher DiJ.Il.U.A.l.C.I. c:lU“ uc . uuOc:lUI.A.Uc:l . v DUVW,“,.I. D;tg “ 1.2 Classification. Sprinkler heads shall be of the following types and classes, as specified (see 6!): ype I - For pendant on upright installation 1fi overhead sprinkler system (see figure 1). Type II - Watercurtain or
3、barrier type for installation in fixed piping - . DD-. IIl. Class 1 - Intermediate velocity (see figures 2 and 3). Class 2 - High velocity (see figures 4 and 5). 2. APPLICABLE DOCUMENTS 2.1 The following documents of the issue in effect on date of invitation for bids or request for proposal, form a
4、part of the specification to the extent specified herein. SPECIFICATIONS FEDERAL QQ-A-59l - Aluminum Alloy Special Shaped Section. OO-C-390 - Copper Alloy Castings (Including Cast Bar). PPP-B-636 - Boxes, Fiberboard. PPP-B-640 - Boxes, Fiberboard, Corrugated, Triple-Wall. MILITARY MIL-P-116 - Preser
5、vation, Methods of. MIL-F-1183 - Fittings: Tube! cast Bronze Silver Brazing. STANDARDS MILITARY MIL-STD-105 -Spling Procedures ad Tables for Inspection by Attributes. MIL-STD-129 - Marking for Shipment and Storage. (Copies gf specifications, standards, drawings, and publications required by supplier
6、s in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) 2.2 Other publications. The following documents form a part of this specification to e extent specifed herein. Unless otherwise indicated, the issue in effec
7、t on date of invitation for bids or request for proposal shall apply. UNIFORM CLASSIFICATION COMMITTEE Uniform Frei9ht Classification Rules. (Applioation for copies should be addressed to the Uniform Classification Committee, 202 union Station, 516 West Jackson Boulevard, Chicago, Illinois 60606.) N
8、ATIONAL CLASSIFICATION BOARD Nationai Motor Freight Classification Rules (Application for copies should be addressed to the National Motor Freight Traffic Assooiation, Inc., 1616 P Street, N. W., Washington, D. C. 20036.) FSC 4510 Provided by IHSNot for ResaleNo reproduction or networking permitted
9、without license from IHS-,-,-MIL-H-19387A(SHIPS) 3. REQUIREMENTS 3.1 Sprirler heads shall meet e delivery rates and patterns shown On figures 1 through 5. 3.2 Material. Sprinkler head bodies shall be made of copper alloy conforming to OOQ-C-390, alloy G7, or aluminum alloy conforming to OO-A-591, as
10、 specified (see 6.1). De flector plates and supporting a shall be of copper alloy for bronze heads and aluminum alloy for aluminum heads. 3.3 Q! lction. 3.3.1 TYfe I sprinkler (see figure 1). Type I sprinkler heads shall have a sinole ooen or1fice directina the stream to imninae unnn a external defl
11、ector plate firmly supported and potected by-t;o-cro;-Yke-ri9idly-fi;d to or integral with the head body. The deflector plate shall be suitably designed to produce a homogeneous conical spray. Tne body shall be designed with a l/2-inch iron pipe size (i.p.s.) male thread for installation in plastic
12、or aluminum fittings or 1/2 inch shank for installation with silver brazed fit tings in accordance with MIL-F-l183 as specified (see 6.1). The size of the orifices and angle of the cone shall be as specified (see 6.1). The capacities of the heads shall meet the flow characteristics specified in tabi
13、e I. Table - Discharge capacity for Orifice size r .0 18 21 24 28 32 ., I 13 15 20 26 36 3.3.2 Type II sprinkler . Maximum 9 15 17 24 30 40 square l.nc Maximum 11 13 18 20 21 25 28 32 37 41 52 58 3.3.2.1 Class 1 (see figure 2). Clas 1 intermediate velocity sprinkler heads shall be so designed that t
14、he single open orifice directs the stream to impinge upon a deflector plate integral with 90 deqrees to the body of the head to oroduce a water curtain effect. The body shall have a l/2=inch i.p.s. male thread or 0.840 inch outside diameter-(od:) -. sh- as SPecified (see 6.1) for installation in pip
15、ing system. The size of the orifice and spread of the water curtain shall be as specified (see 6.1). Figure 3 indicates typical pattern and flow characteristics of intermediate velocity sprinkler heads. 3.3.2.2 Class 2 (f, figure 4). Class 2 high velocity sprinkler heads shall be so designed that th
16、e sl.ngIe-open Orl.f1Ce directs the stream to impinge upon a deflector plate integral with and at a suitable angle to the body of the head to produce a fan-shaped water curtain pattern. The bod shall have a 1/2-inch- i.p.s. male thread or 0.840 inch o.d. shank as specified (see 6.1) fOI installation
17、 in the piping system. The size of the orifice d spread of the water curtain shall be as specified (see 6.1). Figure 5 indicates a typical pattern and flow characteristics for high velocity sprinkler heads. 3.4 Workmanship. 3.4.1 All fittings shall be sound, smoothly cored, true to form, uniform in
18、texture, and free from cold shunts, porosity, or any other defects which may affect their service ability. They shall be thoroughly cleaned, both inside and outside, and all fins and rough ness shall be removed. 3.4.2 Castings shall not be repaired, plugged, or welded without permission from the Gov
19、ernment representative, which shall be given only when the defects are small (less than 10 percent of a size which would cause the fittings to be rejected) ad do not adversely affect the strength, use, or machinability of the castings. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspectio
20、n. Unless otherwiSe specified in the contract or purchase order, the supplIer l.S responsible for the performance of all inspection require ments as speoified herein. Except as otherwise specified in the contract or order, the 2 -Provided by IHSNot for ResaleNo reproduction or networking permitted w
21、ithout license from IHS-,-,-MIL-H-19387A(SHIPS) supplier may use his own or any other facilities suitable for ,e performance of the inspec tion requirements specified herein, unless disapproved by the Government. The Government reserves he right to perform y of the inspections set forth in e specifi
22、cation where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.2 Ouality conformance inspection. 4.2.1 Lot. All sprinkler heads of the same type, class, and orifice size offered for delivery at one time shall be considered a lot for purposes
23、of inspection. 4.2.2 Sampling for visual and dimensional examination. A random sample of sprinkler heads shal be seectfrom eacot in accordance with MIL-STD-105 at inspection level II for the examination of 4.3. The Acceptable Quality Level shall be 1.5 percent defective. Any sprinkler head in the sa
24、mple containing one or more visual or dimensional defects shall be rejected, and if e fiwnber of defective sprinkler heads in any sample exceeds the acceptance number for that sample, the lot represented by the sample shall be rejected. 4.2.3 S“pling for tests. A rdom snt; -;f- thi;-pecifition -;hil
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