1、-1 MSI 7243D 18 November 2004 SUPERSEDING MS17243C 13 April 1978 DETAIL SPECIFICATION SHEET VALVES, ANGLE, SHUT-OFF, PACKED, RECEIVER, REFRIGERANT-I2 This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the product descri
2、bed shall consist of this specification. - SEAL C P TO HAVE HEXAGON LLY MACH11 ID EXTERNAL CONNECTION END FC ! USE WITH SQUARE JAWED OPEN E ID TYPE WRENCH OR OTHER A SUITABLE HAND TOOL, SOCKET TYPE OR BOX END WRENCH - FLARE CONNECTION FOR ALL PART r m NUMBERS EXCEPT - SOLDER CONNECTION FOR -6 OUTLET
3、 CENTER LINE FIGURE 1. Anale shut-off receiver valve, Refriaerant-12. AMSC N/A FSC 4820 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MSI 7243D TABLE I. Valve dimensions. NOTES: 1. Dimensions are in inches. 2. Metrics are given for general informat
4、ion only. REQUIREMENTS Intended use. Valves covered in this specification are intended for use in a refrigerating system as a means of shutting off the systems charge of refrigerant and containing it in the liquid receiver or condenser receiver. Materials. Valve body and seal cap - brass or steel. R
5、ing gasket - soft copper. Valve stem (including integral plug) - commercial bronze or steel treated to resist corrosion. Operating conditions. Maximum operating pressure: 350 psig. Maximum operating temperature: 200F. Connection ends. Inlet - Male pipe thread in accordance with SAE-J513. Outlet (all
6、 except -6) - Flare tube male thread in accordance with SAE-J513. Outlet (-6 only) - Solder tube female socket in accordance with ASME 816.22 for O.D. 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
7、/16, 1/4, or 5/16 inch square shape. Identification of product. The Part or Identifying Number (PIN) for the valve consists of the MS number plus the dash number. Example: MSI 7243-1. Standard product. Valves delivered under this specification shall be the manufacturers standard commercial catalog p
8、roduct, except for any modifications and additional requirements specified herein. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS17243D Design and construction. The valves shall be of the angle, packed, back-seating, or nonbackseating type with
9、 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 or by other means to prevent damage during handling. Finish. Finish shall be the manufacturers standard commercial finish. Marking. The ma
10、nufacturers 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 from pits, sprue
11、s, 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 submerged in wat
12、er 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. Any leakage thr
13、ough 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 16 February 1993
14、. Marginal notations are not used in this revision to identify changes with respect to the previous issue due to the extent of the changes. Referenced documents. This document references following: ASME 816.22 SAE-J513 CONCLUDING MATERIAL Custodians: Army - GL Navy - SH Air Force - 99 DLA - CC Revie
15、w activities: Army - AT, CR4 Navy - MC, SA, YD Air Force - 71 Preparing activity: DLA - CC (Project 4820-0863-000) NOTE: The activities 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 httrx/assist.daps.dla.mil. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
