AIR FORCE MIL-DTL-7560D-1997 VALVE ASSEMBLY OXYGEN CYLINDER BAILOUT《紧急跳伞用氧气瓶用阀门组件》.pdf

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1、INCH-POUNDMIL-DTL-7560D20 June 1997SUPERSEDINGMIL-C-7560C23 January 1991DETAIL SPECIFICATIONVALVE ASSEMBLY, OXYGEN CYLINDER, BAILOUTThis specification is approved for use by all Departments and Agencies of the Department of Defense.1. SCOPE1.1 Scope . This specification covers manually operated, oxy

2、gen cylinder bailout valve assemblies.1.2 Classification . The valve assembly is classified according to the hose length and the actuating cable asdesignated by the applicable Part or Identifying Number (PIN) of MIL-DTL-7560/1.2. APPLICABLE DOCUMENTS2.1 General . The documents listed in this section

3、 are needed to meet the requirements specified in sections 3,4, and 5 of this specification. This section does not include documents cited in other sections of this specificationor recommended for additional information or as examples. While every effort has been made to ensure thecompleteness of th

4、is list, document users are cautioned that they must meet all specified requirements documentscited in sections 3, 4, and 5 of this specification, whether or not they are listed.2.2 Government documents .2.2.1 Specifications, and standards . The following specifications and standards form a part of

5、this documentto the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issueof the Department of Defense Index for Specifications and Standards (DODISS) and supplement thereto, cited inthe solicitation (see 6.2).SPECIFICATIONSDEPARTMENT OF DEFE

6、NSEMIL-DTL-7560/1 Valve Assembly, Oxygen Cylinder, BailoutMIL-O-27210 Oxygen, Aviators Breathing, Liquid and GasMIL-G-27617 Grease, Aircraft And Instrument, Fuel And Oxi dizer ResistantMIL-T-27730 Tape, Antiseize, Polytetrafluoroethylene, with DispenserAMSC N/A FSC 1660DISTRIBUTION STATEMENT A : App

7、roved for public release; distribution is unlimited.Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use inimproving this document should be addressed to: Technology & Industrial Services Division, OC-ALC/TICLA,Tinker AFB, OK 73145-3037 by using the

8、Standardization Document Improvement Proposal (DD Form 1426)appearing at the end of this document or by letter.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-7560D2STANDARDSDEPARTMENT OF DEFENSEMIL-STD-130 Identification Marking Of US Milita

9、ry PropertyMIL-STD-1359 Cleaning Methods And Procedures For Breathing Oxygen EquipmentMS26545 Cylinder, Steel, Compressed Gas, Non-Shatterable Seemless, 1800 And 2000PSI(Unless otherwise indicated, copies of federal and military specifications, and standa rds are available from theStandardization Do

10、cuments Order Desk, Building 4D, 700 Robbins Ave, Philadelphia, PA 19111-5094)2.3 Order of precedence . In the event of a conflict between the text of this document and the references citedherein, (except for related associated detail specifications, specification sheets, or MS standards), the text

11、of thisdocument takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unlessa specific exemption has been obtained.3. REQUIREMENTS3.1 Specification sheet . The individual item requirements shall be as specified herein and in accordance withthe specification

12、sheet. In the event of any conflict between the requirements of this specification and thespecification sheet, the latter shall govern.3.2 Qualification . The valve assemblies, flow controller, and break-off nipple furnished under thisspecification shall be products which are authorized by the quali

13、fying activity for listing on the applicableQualified Products list at the time of award of contract (see 4.2 and 6.3).3.3 Materials . Materials shall conform to applicable specifications and shall be as specified herein and onapplicable drawings. Materials which are not covered by specifications, o

14、r which are not specifically describedherein, shall be of the best quality, of the lightest practicable weight, and suitable for the purpose intended.Reclaimed materials shall be utilized to the maximum extent possible within the quality limits required by thisdocument.3.3.1 Age . Elastomer componen

15、ts, other than components made from silicone, shall not be more than 12months old from the date of delivery of the valve to any Government service, or to an airframe or accessorymanufacturer.3.3.2 Protective treatment . When materials are used in the construction of the valves that are subject todet

16、erioration when exposed to environmental conditions likely to occur during service usage, they shall beprotected against such deterioration in a manner that will in no way prevent compliance with the performancerequirements of this specification. Protective coating which might crack, chip, or scale

17、during normal service lifeor under extremes of environmental conditions shall not be used.3.4 Design and construction . The valve assembly shall be designed and constructed in accordance with theapplicable dash number of MIL-DTL-7560/1.3.4.1 Flow controller . The flow controller shall be designed an

18、d constructed in accordance with MIL-DTL-7560/1 and shall contain a filter (see 6.5) that will filter all oxygen passing through the valve.3.4.2 Break-off nipple . The break-off nipple shall be designed and constructed in accordance with MIL-DTL-7560/1.Provided by IHSNot for ResaleNo reproduction or

19、 networking permitted without license from IHS-,-,-MIL-DTL-7560D33.4.3 Antiseize . Antiseize tape conforming to MIL-T-27730 or thread compound conforming to MIL-G-27617 shall be used on all male pipe thread fittings. The tape or compound shall not be used on flared tubefittings, straight threads, co

20、upling sleeves, or on the outside of the tube flares. None of the tape or compound shallbe allowed to enter the inside of a fitting. The tape shall be applied in accordance with instructions specified inMIL-T-27730. The compound shall be applied to the first three threads and the end of the fitting

21、wiped clean.3.4.4 Cleaning . All parts of the valve assemblies or flow controller, except the hose, shall be cleaned inaccordance with MIL-STD-1359.3.5 Performance .3.5.1 Valve Assemblies .3.5.1.1 Leakage . The valve assemblies shall show no indications of leakage when tested as specified (see4.6.l.

22、1).3.5.1.2 Retaining pin removal force . The force required to remove the retaining pin shall be 15 + 5 pounds asspecified (see 4.6.1.2).3.5.1.3 Fill and operation . When the valve assemblies are tested as specified (see 4.6.1.3), the force requiredto discharge the gas shall not be less than 10 nor

23、more than 20 pounds.3.5.1.4 Actuating cable housing retainer . The actuating cable housing retainer shall not become detachedfrom the valve when subjected to the test specified (see 4.6.1.4).3.5.1.5 Actuating, cable assembly . The actuating cable assembly shall withstand a pull of 30 pounds whentest

24、ed as specified (see 4.6.1.5).3.5.1.6 Operation at high and low temperature . The valve assemblies shall pass the high temperature(160 o F) and the low temperature (-65 o F) tests specified (see 4.6.1.6).3.5.1.7 Vibration . The valve assemblies shall pass the vibration test specified (see 4.6.1.7).

25、No screws orother parts shall become loose. The tests (see 4.6.1.1 and 4.6.1.3) shall be performed after the vibration tests.3.5.1.8 Hose fitting to hose attachment . The hose fitting shall not separate from the hose at a force of lessthan 25 pounds when tested as specified (see 4.6.1.8).3.5.2 Flow

26、controller .3.5.2.1 Total flow . When the controller is tested as specified (see 4.6.2.1), a flow of gas shall be maintainedfor 10 minutes. The flow during the first minute shall be 11 + 1 liters and at least 1 liter for the tenth minute.3.5.2.2 Flow at high and low temperature . The flow controller

27、 shall pass the high (160 o F) and low (-65 o F)temperature flow test specified(see 4.6.2.2) when the gas glow is maintained for 10 minutes. The flow during thefirst minute shall be 16 liters maximum for the high temperature test and 8 liters minimum for the lowtemperature test.3.5.2.3 Vibration . T

28、he flow controller shall pass the vibration test specified (see 4.6.2.3).3.5.3 Break-off nipple .3.5.3.1 Leakage . The nipple shall pass the leakage test specified (see 4.6.3.1).Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-7560D43.5.3.2 Fr

29、acture force . When tested as specified (see 4.6.3.2), the force required to break the nipple shall notbe less than 10 nor more than 20 pounds.3.6 Identification marking . The valve assembly, flow controller, and break-off nipple shall be marked foridentification in accordance with MIL-STD-130 excep

30、t the Federal Stock number shall be omitted.3.7 Workmanship . The valve assemblies shall be uniform in quality and shall be free from irregularities ordefects which could adversely affect performance, reliability, or durability. The assemblies shall be free of oil,grease, fuel, water, dust, dirt, or

31、 any other foreign matter.3.8 Recycled and reclaimed materials . Recycled and reclaimed materials shall be encouraged to themaximum extent possible.4. VERIFICATION4.1 Classification of inspection . The inspection requirements specified herein are classified as follows:a. Qualificat ions inspections

32、(see 4.2).b. Conformance inspection (see 4.3).4.2 Qualification inspection .4.2.1 Valve assembly . Qualification inspection of the valve assembly shall consist of performing theexaminations and tests specified (see 4.5.1, 4.5.2, 4.6.1.1, 4.6.1.2, 4.6.1.3, 4.6.1.4, 4.6.1.5, 4.6.1.6, 4.6.1.7, and4.6.1

33、.8).4.2.2 Flow controller . Qualification inspection of the flow controller shall consist of performing examinationsand tests specified (see 4.5.1, 4.5.2, 4.6.2.1, 4.6.2.2 and 4.6.2.3).4.2.3 Break-off nipple . Qualification of the break-off nipple shall consist of performing the examinations andtest

34、s specified (see 4.5.1, 4.5.2, 4.6.3.1 and 4.6.3.2).4.2.4 Qualification samples . Qualification samples shall consist of 2 valve assemblies or 2 peripheralcomponents of each specification sheet PIN for which qualification is desired, 2 flow controllers, or 12 break-offnipples or 6 connectors are req

35、uired if qualified individually. Other component parts of the valve can not bequalified unless the valve assembly is qualified (see 6.3).4.3 Conformance inspection . Quality conformance inspection shall consist of performing the examinationsand tests listed in table I for valve assemblies, table II

36、for flow controllers, or table III for break-off nipples.4.3.1 Sampling inspection .4.3.1.1 Procedure . The lot size for sampling plan inspection shall be 50 units. That is, 50 valve assemblies,50 flow controllers or 50 break-off nipples that have been manufactured under essentially the same conditi

37、onsusing the same facilities, equipment and processes shall be one lot. Continuous production is not required.Components parts and materials need not be delivered from the same batch or lot. One unit from each lot shall berandomly selected for sampling inspection. The size of the order or delivery s

38、hall not affect the samplingprocedure. Production records would be used to assure that one out of every 50 units produced is subjected tosampling inspection.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-7560D54.3.1.2 Rejection and retest .

39、If one or more items selected from a lot fail to meet the specification, acceptanceof all items in the lot shall be withheld until the extent and cause of failure have been determined. The contractorshall explain fully to the Government representative and notify the procuring activity in writing the

40、 cause offailure, the action taken to preclude recurrence, and the impact this failure might have on scheduled deliveries.After correction, all of the sampling inspection shall be repeated.4.3.1.3 Continuation of inspection . For production reasons, individual inspection or other sampling plansmay b

41、e continued pending the investigation of a sampling inspection failure. Final acceptance of the entire lot orlots produced later shall not be made until it is determined that all items meet all the requirements of thisspecification.4.3.1.4 Defects in items already accepted . The investigation of a t

42、est failure could indicate that defects mightexist in items already accepted. If so, the contractor shall fully advise the procuring activity of all defects likely tobe found and the method of correcting them.4.4 Inspection conditions . Unless otherwise specified, all inspections shall be performed

43、in accordance withthe test conditions specified in this specification.4.4.1 Gas . The gas used in performing the tests shall be oxygen conforming to type I of MIL-O-27210.4.4.2 Temperature and pressure . Unless otherwise specified, tests shall be conducted at local ambienttemperature and barometric

44、pressure. Corrections shall be made to provide agreement with the temperature andpressure calibration of the instruments. Inspection data provided by any instruments not calibrated to normaltemperature and pressure (NTP) conditions shall be corrected to determine NTP requirements. NTP conditions are

45、29.92 inches of mercury and 70 o F.4.4.3 Fixtures .4.4.3.1 Valve . Valves used in testing the flow controller and break-off nipple shall conform to MIL-DTL-7560/1 (dash number optional), except the hose need not contain the connector and shall have a minimum lengthof 1 foot.4.4.3.2 Cylinders . Cylin

46、ders used in performing the tests shall be MS26545A2X0022 cylinders.4.5 Methods of inspection .4.5.1 Examination of product . The valve assembly, flow controller, or break-off nipple, shall be examined todetermine compliance with this specification and applicable specification sheet and to determine

47、 the existence ofany defects listed in table IV.4.5.2 Examination of dimensions . The valve assembly, flow controller, or break-off nipple shall be examinedto determine if dimensions are as specified. The depth of the centerline hole of the break-off nipple is a criticaldimension and each break-off

48、nipple manufactured shall be checked. Any dimension not within tolerance shall beconsidered a defect.4.6 Test methods .4.6.1 Valve assembly .4.6.1.1 Leakage . A leakage test shall be performed on the valve assembly with the pressure gage, flowcontroller, break-off nipple, and section of hose, and th

49、e nipple bushing installed. The starting torque for thepressure gage is 40 inch-pounds with a maximum torque of 250 inch-pounds. The valve and hose assembly shallbe pressurized to a minimum gaseous pressure of 2,500 psig and submerged in water for at least 5 minutes. TheProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-7560D6entire hose and valve, except the pressure gage, shall be c