1、AMSC N/A FSC 4820 MS17243E 13 June 2011 SUPERSEDING MS17243D 18 November 2004 DETAIL SPECIFICATION SHEET VALVES, ANGLE, SHUT-OFF, PACKED, RECEIVER, REFRIGERANT-12 This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the p
2、roduct described shall consist of this specification. FIGURE 1. Angle shut-off receiver valve, refrigerant-12. Inactive for new design after 6 February 1996. INCH-POUND Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS17243E 2 TABLE I. Valve dimensi
3、ons. 1/ 2/ Dash number Size inlet NPT Size outlet A max (mm) B max (mm) OD flare OD solder -1 1/4 1/4 - 3.625 (92.08) 1.625 (41.28) -2 3/8 3/8 - 4.000 (101.60) 2.000 (50.80) -3 3/8 1/2 - 4.2509 (107.98) 2.000 (50.80) -4 1/2 1/2 - 4.500 (114.30) 2.250 (57.15) -5 1/2 5/8 - 5.000 (127.00) 2.500 (63.50)
4、 -6 3/4 - 7/8 6.000 (152.40) 2.750 (69.85) -7 1/2 3/8 - 4.500 (114.30) 2.250 (57.15) 1/ Dimensions are in inches. 2/ Metrics are given for general information only. REQUIREMENTS Intended use. Valves covered in this specification are intended for use in a refrigerating system as a means of shutting o
5、ff the systems charge of refrigerant and containing it in the liquid receiver or condenser receiver. Materials. Valve body and seal cap - brass or steel. Finish brass none, steel zinc plated. Ring gasket - soft copper. Valve stem (including integral plug) - commercial bronze or steel treated to resi
6、st corrosion. Operating conditions. Maximum operating pressure: 350 psig (2.41MPa). Maximum operating temperature: 200F (93.3C). Connection ends. Inlet - Male pipe thread in accordance with SAE-J513. Outlet (all except -6) - Flare tube male thread in accordance with SAE-J513. Outlet (-6 only) - Sold
7、er tube female socket in accordance with ASME B16.22 for OD tube size 7/8 inch. Type. Angle, packed, back-seating or non-back-seating key-operated plug element, with gasketed seal cap, valve stem shank to be 3/16, 1/4, or 5/16 inch square shape. Identification of product. The PIN for the valve consi
8、sts of the MS number plus the dash number. Example: MS17243-1-B. Material, finish (see table II) Size (see table I) Drawing number Standard product. Valves delivered under this specification shall be the manufacturers standard commercial catalog product, except for any modifications and additional r
9、equirements specified herein. Design and construction. The valves shall be of the angle, packed, back-seating, or nonbackseating type with a gasketed seal cap. A wrench grip shall be provided on each valve. Threads and the seating surface of the flare connection shall be protected with plastic caps
10、or by other means to prevent damage during handling. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS17243E 3 Material. Material shall be brass or steel. TABLE II. Material, finish. Dash Number Material Finish B Brass none C Steel ASTM B633, type 6
11、 Marking. The manufacturers standard identification and other data standard with the manufacturer shall be placed on all valves. Unmarked valves will be accepted where the manufacturers standard practice does not require marking. Workmanship. All parts of the finished valves shall be clean and free
12、from pits, sprues, scale, flux or extraneous material. External surfaces shall be free from burrs and sharp edges. Passages shall be clean and free from pits, sprues, scale, flux and foreign material. Angle valve leak test. The angle valve, with the seat open and the discharge end blocked, shall be
13、submerged in water and a pressure of 350 pound-per-square-inch gage pressure of air shall be applied to the intake to check for body leakage. The pressure shall be released and the seat closed and the discharge end unblocked. The valve shall be submerged in water again and the same pressure applied.
14、 Any leakage through the body or by the seat shall be cause for failure of this test. Order of precedence. For design feature purposes, this standard takes precedence over procurement documents referenced herein. Note. The procurement specification, MIL-V-22854, was cancelled without replacement on
15、16 February 1993. Changes from previous issue. The margins of this specification are marked with vertical lines to indicate where changes from the previous issue were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations.
16、 Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous issue. Referenced documents. This document references the following: ASME B16.22 ASTM B633 SAE-J513 Provided b
17、y IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS17243E 4 CONCLUDING MATERIAL Custodians: Preparing activity: Army GL DLA - CC Navy SH Air Force 99 (Project 4820-2011-004) DLA CC Review activities: Army AT, CR4 Navy MC, SA, YD Air Force - 71 NOTE: The activit
18、ies listed above were interested in this document as of the date of this document. Since organization and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at https:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
