1、 MS28767B 8 August 2006 SUPERSEDING MS28767A 30 April 1957 DETAIL SPECIFICATION SHEET VALVE, SHUTTLE, HYDRAULIC, INTERNAL THREAD, TUBE FITTING OUTLET, 3000 PSI, TYPE II SYSTEMS This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for a
2、cquiring the product described herein shall consist of this specification sheet and MIL-DTL-19068. FIGURE 1. Valve design and mounting dimensions. AMSC N/A FSC 4820 INCH-POUND INACTIVE FOR NEW DESIGN AFTER 30 April 1999 Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
3、ense from IHS-,-,-MS28767B 2TABLE I. Valve dimensions. Dash No Tube OD Thread T MIL-S-7742 A + .031 B + .031 C Max D + .000 - .250 -4 .2500 .4375-20 UNF-3B 3.750 1.000 .938 1.000 -5 .3125 .5000-20 UNF-3B 3.750 1.000 .938 1.000 -6 .3750 .5625-18 UNF-3B 3.875 1.000 1.000 1.250 -8 .5000 .7500-16 UNF-3B
4、 4.188 1.156 1.062 1.500 -10 .6750 .8750-14 UNF-3B 4.750 1.312 1.250 1.750 TABLE I. Valve dimensions - Continued. Dash No Tube OD E + .005 F + .031 Rated flow (GPM) -4 .2500 0.875 .750 1.2 -5 .3125 0.875 .750 2.3 -6 .3750 1.125 .750 3.5 -8 .5000 1.125 .813 6.0 -10 .6750 1.375 .938 10.5 Notes. 1. Dim
5、ensions are in inches. Unless otherwise specified, tolerances for linear dimensions, 3 digits + .010, 4 digits + .0005, and angles + 0.5o. 2. All machined surfaces shall be smooth to 125 micro inches Ra in accordance with ASME-B46.1. 3. The outline drawing as shown is maximum and not restrictive to
6、the actual design, but location of ports and mounting holes must be maintained. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS28767B 3REQUIREMENTS: Materials. Corrosion resistant steel (CRES) type 300, Aluminum alloy type 7075-T73 or equivalent.
7、The materials selected shall be light-weight, compatible with hydraulic fluid, fuel and oil and shall meet the requirements specified in this specification sheet and MIL-DTL-19068. Finish: Aluminum alloy parts shall be anodized in accordance with MIL-A-8625 type I to protect from corrosion. All corr
8、osion resistant steel (CRES) parts shall be passivated in accordance with SAE-AMS 2700. Cadmium plating shall not be used. MARKING Part or Identifying Number (PIN). The valve shall have a corrosion resistant identification plate permanently attached on the valve. The plate shall include the part num
9、ber consisting of the following: The basic MS number; the material; corrosion resistant steel or aluminum, and the dash number for the selected tubing size. Example: MS28767 AL -6 Product packaging. The packaging requirement shall be as specified in MIL-DTL-19068 or as specified by the acquiring act
10、ivity. Intended use: This internally threaded valve is used for mounting with hydraulic tubing. This type II valve is intended for use with the aircraft type II hydraulic systems to provide emergency fluid due to loss of pressure in the normal pressure lines. This valve is currently used in the exis
11、ting military aircraft and is military unique because of specific design and dimensions which is not available for use in other commercial aircraft. Change from previous issue. Marginal notations are not used in this revision to identify changes with respect to the previous issue due to the extent o
12、f the changes. Tubing size e.g., -6 = .3750 Material CRES for corrosion resistant steel or AL for aluminum Basic MS number Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MS28767B 4CONCLUDING MATERIAL Custodians: Preparing activity: Army-AV Navy-AS N
13、avy-AS Air Force-99 (Project 4820-2005-004) Review activities: Army-AT Navy-SA Air Force-71 DLA- CC Industry Association: SAE-A6C NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at http:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
