DLA A-A-59440 11-2012 VALVE SWING CHECK-VALVE STEAM.pdf
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1、 AMSC N/A FSC 4820 A-A-59440/11 5 December 2012 COMMERCIAL ITEM DESCRIPTION SPECIFICATION SHEET VALVE, SWING, CHECK-VALVE, STEAM The General Services Administration has authorized the use of this commercial item description for all federal agencies. The complete requirements for procuring the valve,
2、 swing, check-valve, steam described herein shall consist of this document and the issue in effect of A-A-59440. CLASSIFICATION/PART OR IDENTIFICATION NUMBER (PIN). This Commercial Item Description (CID) specification sheet uses a classification system which is included in the PIN as shown in the fo
3、llowing example (see NOTES). AA59440 /11 - 050 CID number Applicable Dash number CID spec sheet (see figure 1) (two digits) SALIENT CHARACTERISTICS. Interface and physical dimensions. Valve, swing, check-valve, steam supplied to this CID specification sheet shall be as specified herein (see figure 1
4、). Size. Nominal sizes of 1/4 inch through 1 inch with NPTF-1 threads. Intended application. This item is for use in steam systems where pressures do not exceed 150 psig (10.3 bar) Steam at 351 F (177.2C) and the steam is compatible with brass. Permissible variations in dimensions. Figure 1 lists th
5、e permissible variation in dimensions for each size. The external dimensions of the valve should not limit procurement unless the end item applications restrict these dimensions. Optional designs. Figure 1 is for identification purposes only and is not intended to restrict designs or shapes not dime
6、nsioned. Threads. Threads are dryseal NPTF-1 in accordance with CID A-A-59440. INCH-POUND Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59440/11 2 Materials. Preferred valve material. Preferred material is brass in accordance with ASTM B61. Bra
7、ss. Brass shall be in accordance with the following: ASTM B16/B16M ASTM B121/B121M ASTM B505/B505M SAE AMS4845 ASTM B22 ASTM B124/B124M ASTM B584 SAE AMS4855 ASTM B30 ASTM B148 ASTM B763 SAE AMS4860 ASTM B36/B36M ASTM B176 ASTM B770 SAE AMS4862 ASTM B61 ASTM B271 SAE AMS4890 ASTM B62 ASTM B369 Prote
8、ctive Coating. Brass: None. Caution: Brass with lead contents shall not be used for potable or oxygen systems. Mounting. Mounting shall be vertical with upward flow direction so as to push against the swing. Pressure. Working Pressure: 150 psi (10.3 bar). Test Pressures. Perform tests in accordance
9、with A-A-59440 using API Standard 598. a. Shell test pressure 275 psig (19.0 bar). b. Certification of testing can be used in place of testing if procuring activity accepts. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-59440/11 3 Dash number N
10、ominal pipe size A Pipe tread, NPTF-1 B Ref C Ref 050 1/4 1/4 - 18 2.25 1.75 051 3/8 3/8 - 18 2.25 1.75 052 1/2 1/2 - 14 2.50 1.75 053 3/4 3/4 - 14 3.00 2.00 054 1 1 11 1/2 3.50 2.38 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for information only. 3. Unless otherwise specifi
11、ed tolerances are .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. FIGURE 1. Valve, swing, check - valve, steam. Provided by IHSNot for ResaleNo reproduction or networking permitted
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