DLA A-A-59440 9 B-2012 COCK-VALVE PLUG GROUND KEY THREADED TYPE BRASS 125 PSI STEAM NPTF-1 THREADS.pdf
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1、AMSC N/A FSC 4820 A-A-59440/9B 21 May 2012 SUPERSEDING A-A-59440/9A 23 May 2005 COMMERCIAL ITEM DESCRIPTION SPECIFICATION SHEET COCK-VALVE, PLUG, GROUND KEY, THREADED TYPE, BRASS, 125 PSI, STEAM, NPTF-1 THREADS The General Services Administration has authorized the use of this commercial item descri
2、ption for all federal agencies. The complete requirements for procuring the cock-valve, plug, ground key, threaded type, brass, 125 psi, steam, NPTF-1 threads described herein shall consist of this document and the issue in effect of A-A-59440. CLASSIFICATION/PART OR IDENTIFICATION NUMBER (PIN). Thi
3、s commercial item description (CID) specification sheet uses a classification system which is included in the PIN as shown in the following example (see NOTES). SALIENT CHARACTERISTICS. Interface and physical dimensions. Cock-valves, plug, ground key, threaded type, brass, 125 psi steam, NPTF-1 thre
4、ads supplied to this CID specification sheet shall be as specified herein (see figure 1). Size. Nominal sizes of 1/8 inch through 3/8 inch with NPTF-1 threads. Intended application. This item is for use in steam systems where pressures do not exceed 125 psig (8.62 bar) at 351F (177C) and the liquid
5、is compatible with brass. Permissible variations in dimensions. Figure 1 lists the permissible variations in dimensions for each size. The external dimensions of the cock-valve should not limit procurement unless the end item applications restrict these dimensions. Optional designs. The illustration
6、 is for identification purposes only, it is not intended to restrict designs or shapes not dimensioned. INCH-POUND AA59440 /09 - 032 I I I _I_ _I_ _I_ CID number Applicable Dash number CID spec sheet (see figure 1) (two digits) Provided by IHSNot for ResaleNo reproduction or networking permitted wit
7、hout license from IHS-,-,-A-A-59440/9B 2 Threads. Threads are dryseal NPTF-1 in accordance with A-A-59440. Materials. Preferred valve material. Preferred material is brass in accordance with ASTM B61. Alternate brass. Brass shall be in accordance with the following commercial standards: ASTM B16/B16
8、M ASTM B121/B121M ASTM B369 SAE AMS4845 ASTM B22 ASTM B124/B124M ASTM B505/B505M SAE AMS4855 ASTM B30 ASTM B148 ASTM B584 SAE AMS4860 ASTM B36/B36M ASTM B176 ASTM B763 SAE AMS4862 ASTM B62 ASTM B271 ASTM B770 SAE AMS4890 Protective coating. Brass: None. Caution: Brass shall not have any lead content
9、s. Test pressures. a. Shell: 250 psig (17.2 bar). b. Seat: 125 psig (8.62 bar). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59440/9B 3 Dash Number A Pipe thread NPTF-1 B max (mm) C max (mm) D across flats .020 (0.51 mm) E diameter min (mm) F
10、max (mm) G max (mm) 036 1/8-27 1.75 (44.5) 1.94 (49.3) .56 or .75 (14.2 or 19.1) .16 (4.1) 1.38 (35.1) 0.38 (9.7) 037 1/4-18 2.12 (53.8) 2.20 (55.9) .75 or .88 (19.1 or 22.4) .16 (.41) 1.38 (35.1) 0.56 (14.2) 038 3/8-18 2.44 (62.0) 2.44 (62.0) .88 or .94 (22.4 or 23.9) .18 (4.6) 1.75 (44.5) 0.56 (14
11、.2) FIGURE 1. Cock-valve, plug, ground, threaded type. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59440/9B 4 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for information only. 3. Unless otherwise specified tolerances a
12、re .010 inch (0.25 mm). 4. Oval port having same cross sectional area is acceptable. 5. Measurements across flats of hexagonal wrench pad shall be a standard measurement under 1 inch (2.54 mm). FIGURE 1. Cock-valve, plug, ground, threaded type - Continued. NOTES. PIN. The PIN should be used for Gove
13、rnment purposes to buy commercial products to this CID specification sheet. See the classification section for PIN format example. Source of documents Commercial Item Description A-A-59440 - Cock-Valves and Valves, General Requirements for (Copies of these documents are available online at https:/as
14、sist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) Other Publications ASTM INTERNATIONAL ASTM B16/B16M - Free-Cutting Brass Rod, Bar and Shapes for Use in Screw Machines ASTM B22 - Bronze Castings for Bridges
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