1、AMSC N/A FSC 5930 INCH-POUND MIL-DTL-28788/1D 1 September 2010 SUPERSEDING MIL-DTL-28788/1C 23 June 2004 DETAIL SPECIFICATION SHEET SWITCHES, LIQUID FLOW, SINGLE POLE, DOUBLE THROW (SPDT), 3 AMPERES, OPERATING TEMPERATURE (32F to 185F) Inactive for new design after 8 March 1999 This specification is
2、 approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the switches described herein shall consist of this specification sheet and MIL-DTL-28788. FIGURE 1. Configuration and dimenisons. Provided by IHSNot for ResaleNo reproduction or networking
3、 permitted without license from IHS-,-,-MIL-DTL-28788/1D 2 TABLE I. Operating characteristics. Military Part Number Port size Switch role rates Pressure drop during flow Actuation Increasing GPM (max) at 104F 9F Deactuation decreasing GPM (min) at 104F 9F PSIG (max) Rated flow GPM Inlet Outlet M2878
4、8/1-1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 -6 -6 -6 -6 -8 -6 -6 -6 -8 -8 -8 -8 -8 -6 -6 -6 -6 -8 -6 -6 -6 -8 -8 -8 -8 -8 .85 .42 .60 .65 3.70 1.30 1.80 2.30 2.70 3.70 4.50 5.40 .85 .60 .27 .40 .45 2.90 1.00 1.50 2.00 2.40 3.20 4.00 4.00 .75 5 5 4.5 5 5 5 5 5 5 7 7 7 5 1.00 .50 .66 .75 4.00 1.50 2
5、.00 2.50 3.00 4.00 5.00 6.00 1.00 REQUIREMENTS: Mounting: See figure 1. Termination: Connector MS33678-10SL-3P. Weight: 1.6 pounds (725.76 grams) approximate. Calibration: See table I. Media: Water. Ports: See table I. Proof flow: 225 percent of rated flow. Differential pressure: See table I. Workin
6、g pressure: 25 to 75 PSIG. Proof pressure: 150 PSIG. Burst pressure: 300 PSIG. Temperature range: Working: 32F to 185F. Nonworking: -65F to +200F. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-28788/1D 3 Seal: Electrical chamber only - herm
7、etic. Endurance: 20,000 cycles. Electrical rating: 3 amperes inductive at 28 volts dc. Connector torque: Applicable. Sand and dust: Applicable. Explosion: Applicable. Vibration: Grade 2. Dielectric withstanding voltage: At atmospheric pressure: 1050 test voltage. At reduced pressure: Test condition
8、C, 1 minute time duration. QUALIFICATION: Group submission: See table II. TABLE II. Extent of qualification. Switches for testing Number of sample units Examination or test Extent of approval M28788/1-2 M28788-1-9 -12 All sample units 2 each Qualification inspection of MIL-DTL-28788 Visual and mecha
9、nical examination Operating characteristics Vibration, shock, and electrical endurance All Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-28788/1D 4 Reference documents: MIL-DTL-28788 The margins of this specification are marked with vertica
10、l lines to indicate where modifications from this revision were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entir
11、e content irrespective of the marginal notations. Custodians: Preparing activity: Army - CR DLA - CC Navy - EC Air Force - 85 (Project 5930-2009-032) DLA - CC Review Activity: Air Force - 99 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 https:/assist.daps.dla.mil/ . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
