1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirelyvoluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefro
2、m, is the sole responsibility of the user.”SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions.Copyright 2006 SAE InternationalAll rights reserved. No part of this publication may be
3、reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE.TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada)Tel: 724-776-4970 (outside USA)Fax: 724
4、-776-0790Email: CustomerServicesae.orgSAE WEB ADDRESS: http:/www.sae.orgAEROSPACE STANDARDAS27166Issued 1998-02Reaffirmed 2006-11Valve, Pressure Equalizing, Gaseous ProductsRATIONALEThis document has been reaffirmed to comply with the SAE 5-year Review policy.NOTICEThis document has been taken direc
5、tly from U.S. Military Specification MIL-V-27166D and contains only minor editorial and format changes required to bring it into conformance with the publishing requirements of SAE technical standards. The initial release of this document is intended to replace MIL-V-27166D. Any part numbers establi
6、shed by the original specification remain unchanged.The original Military Specification was adopted as an SAE standard under the provisions of the SAE Technical Standards Board (TSB) Rules and Regulations (TSB 001) pertaining to accelerated adoption of government specifications and standards. TSB ru
7、les provide for (a) the publication of portions of unrevised government specifications and standards without consensus voting at the SAE Committee level, and (b) the use of the existing government specification or standard format.Any material relating to qualified product lists has not been adopted
8、by SAE. This material was part of the original military specification and is reprinted here for historic reference only.SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AS27166 SAE AS27166 - 2 -1. SCOPE AND CLASSIFICATION:1.1 Sco
9、pe:This specification covers low pressure equalizing, gaseous product valves for use in shipping containers.1.2 Classification:Unless otherwise specified, relief valves shall be of the following types and reseal pressures (see 6.2).Type I - Vacuum Relief.Reseal Pressure 1/2 psi (3.4 kPa)Reseal Press
10、ure 1 psi (6.9 kPa)Reseal Pressure 2 psi (13.8 kPa)Reseal Pressure 3 psi (20.7 kPa)Type II - Pressure Relief.Reseal Pressure 1/4 psi (1.7 kPa)Reseal Pressure 1/2 psi (3.4 kPa)Reseal Pressure 1 psi (6.9 kPa)Reseal Pressure 2 psi (13.8 kPa)Reseal Pressure 3 psi (20.7 kPa)Reseal Pressure 5 psi (34.5 kP
11、a)Type III - Pressure and Vacuum Relief.Reseal Pressures 1/2 psi (3.4 kPa) Pressure, 1/2 psi(3.4 kPa) VacuumReseal Pressures 1 psi (6.9 kPa) Pressure, 1/2 psi(3.4 kPa) VacuumReseal Pressures 1 psi (6.9 kPa) Pressure, 1 psi(6.9 kPa) VacuumReseal Pressures 1 1/2 psi (10.4 kPa) Pressure, 1 1/2 psi(10.4
12、 kPa) VacuumReseal Pressures 2 psi (13.8 kPa) Pressure, 1 psi(6.9 kPa) VacuumReseal Pressures 2 psi (13.8 kPa) Pressure, 2 psi(13.8 kPa) VacuumReseal Pressures 3 psi (20.7 kPa) Pressure, 2 psi(13.8 kPa) VacuumReseal Pressures 5 psi (34.5 kPa) Pressure, 2 psi(13.8 kPa) VacuumSAE AS27166 - 3 -2. APPLI
13、CABLE DOCUMENTS:2.1 Government documents:2.1.1. Specifications and standards: The following specifications and standards form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense I
14、ndex of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2).SPECIFICATIONSFederalZZ-R-765 Rubber, SiliconeMilitaryMIL-T-31000 Technical Data Packages, General Specification forSTANDARDSFederalFED-STD-H28 Screw-Thread Standards for Federal ServicesFED-STD
15、-101 Test Procedures for Packaging MaterialsMilitaryMIL-STD-105 Sampling Procedures and Tables for Inspection by AttributesMIL-STD-129 Marking for Shipment and StorageMIL-STD-130 Identification Marking of U.S. Military PropertyMIL-STD-810 Environmental Test Methods and Engineering GuidelinesMIL-STD-
16、831 Test Reports, Preparation ofMIL-STD-889 Dissimilar MetalsMIL-STD-970 Standards and Specifications, Order of Preference for the Selection ofMIL-STD-2073-1 DoD Materiel Procedures for Development and Application of Packaging RequirementsMIL-STD-45662 Calibration Systems Requirements(Unless otherwi
17、se indicated, copies of federal and military specifications, standards and handbooks are available from the Standardization Documents Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.)SAE AS27166 - 4 -2.2 Non-Government publications:The following documents form a part of this
18、 document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DOD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issues of the documents
19、cited in the solicitation (see 6.2).AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)ANSI Y14.5M Dimensioning and Tolerancing for Engineering Drawing(Application for copies of ANSI Y14.5M should be addressed to American National Standards Institute, 11 West 42nd Street, New York, NY 10036.)ASTMD 3951 Sta
20、ndard Practice for Commercial Packaging(Application for copies should be addressed to ASTM, 1916 Race Street, Philadelphia, PA19103-1137.)(Non-Government standards and other publications are normally available from the organizations that prepare or distribute the documents. These documents also may
21、be available in or through libraries or other informational services.)2.3 Order of precedence:In the event of a conflict between the text of this document and the references cited herein (except for related associated detail specifications, specification sheets, or MS standards), the text of this do
22、cument takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.3. REQUIREMENTS:3.1 First article:When specified (see 6.2), or if recovered or recycled materials are used (see 3.3), a sample shall be subjected to fi
23、rst article inspection (see 6.2) in accordance with 4.4.3.2 Selection of specifications and standards:Specifications and standards for necessary commodities and services not specified herein shall be selected in accordance with MIL-STD-970 except as specified in 3.2.1 and 3.2.2.SAE AS27166 - 5 -3.2.
24、1 Commercial parts: Commercial parts having suitable properties may be used where, on the date of invitation for bids, there are no suitable standard parts. In any case, commercial utility parts, such as screws, bolts, nuts, and cotter pins, having suitable properties may be used provided:a. They ca
25、n be replaced by the standard parts (MS or AN without alteration).b. The corresponding standard part numbers are referenced in the parts list and, if practicable, on the contractors drawings.3.2.2 AN and MS standard parts: With the exception specified in 3.2.1, AN and MS standard parts shall be used
26、 where they suit the purpose. They shall be identified on the drawings by their part numbers.3.2.3 Part numbering of interchangeable parts: All parts having the same manufacturers part number shall be functionally and dimensionally interchangeable. The item identification and part number requirement
27、s of MIL-T-31000 (see 6.2) shall govern manufacturers part numbers and changes thereto.3.3 Materials:All materials shall be as specified herein. Materials not specified shall be of the best quality used for the purpose in commercial practice. The materials shall be free from all defects or imperfect
28、ions that might affect the serviceability of the finished product. Recovered or recycled materials may be used provided the end product is capable of passing the first article tests.3.3.1 Metals: Metals shall be of the corrosion-resistant type or suitably treated to resist corrosion or atmospheric c
29、onditions likely to be met in storage or normal service. MIL-STD-889 shall be utilized to determine compatibility of metals from which the valves are fabricated.3.3.2 Protective treatment: When materials used in the construction of the valves are subject to deterioration when exposed to climatic and
30、 environmental conditions likely to occur during service usage, they shall be protected against such deterioration in a manner that will in no way prevent compliance with the performance requirements of this specification. The use of any protective coating that will crack, chip, or scale with age or
31、 extremes of climatic and environmental conditions shall be avoided. Protective treatments used shall be non-hazardous and environmentally safe.3.3.3 Non-Metals: When utilized, non-metallic parts such as packings, interior gaskets, and valve seats shall be of the oil-resistant type.3.3.4 Exterior Ga
32、skets: Exterior gaskets for sealing valves to the container shall be made of silicone rubber conforming to ZZ-R-765 class 2 or 3, grade 60. No additional sealing material shall be required.SAE AS27166 - 6 -3.4 Construction:3.4.1 Gasket seat: Unless otherwise specified, valves employing exterior gask
33、ets shall be provided with a groove to retain and seat such gaskets. The depth of the groove shall not be less than 50 percent nor more than 70 percent of the original gasket thickness.3.4.2 Castings: When used, castings shall be of high quality, clean, sound, and free of blow-holes, porosity, crack
34、s, and other defects which may adversely affect the valve performance.3.4.3 Valve body: Unless specifically approved by the procuring agency, non-metallic materials shall not be used in the construction of the valve body.3.4.4 Mounting devices: Unless otherwise specified, each valve shall be provide
35、d with a nut, washer, and gasket or other suitable device for installation purposes.3.5 Design:3.5.1 Maintenance: The design of the valve shall be such that installation and removal from containers may be accomplished with common hand tools.3.5.2 Special features: Special features, such as manual re
36、lief devices to permit equalization of pressure prior to opening the container or filters to limit the entrance of sand or dust, may be used provided they do not interfere with the other requirements of this specification.3.5.3 Lubrication: The design of the valve shall be such that lubrication shal
37、l not be required for operation during the service life.3.5.4 Screw threads: All screw threads shall be in accordance with FED-STD-H28, class 2.3.5.5 Locking of parts: All internal and external threaded parts shall be locked.3.5.6 Pipe threads: Pipe threads shall be in accordance with FED-STD-H28.3.
38、5.7 Dimensions: Dimensions and tolerances shall be in accordance with ANSI Y14.5M. Where dimensions and tolerances may affect interchangeability, consistent operation, or performance of the valve, they shall be limited accordingly.3.5.8 Weight and size: Weight and size of the valve shall be as small
39、 as possible consistent with the requirements specified herein and with sound engineering practices.SAE AS27166 - 7 -3.6 Performance:3.6.1 Reseal: The valve reseal pressure shall be specified by the using activity (see 6.2). The specified reseal pressure establishes a lower limit by which the valve
40、must be closed. The valve shall not leak at a rate of 0.061 cubic inch (1 cubic centimeter) of standard air per minute or more in the flow direction at the specified reseal pressure when tested as specified in 4.7.1.2. The actual reseal pressure will be equal to or greater than the specified reseal
41、pressure.3.6.1.1 Leakage: Types I and II valves shall not leak at a rate of 0.061 cubic inch (1 cubic centimeter) of standard air per minute or more in the reverse flow direction at a pressure differential of 10 psi (68.9 kPa) when tested as specified in 4.7.1.2.3.6.2 Cracking: The valve cracking pr
42、essure shall be greater than the specified reseal pressure by a value that is within the pressure offset range specified below. The valve cracking pressure offset range is determined by the specified reseal pressure.3.6.3 Minimum flow rate: The valve minimum flow rate shall be specified by the using
43、 activity (see 3.6.3.1 and 6.2). When tested as specified in 4.7.1.2, valve minimum flow rate shall be determined at a differential pressure 1.5 psi (10.3 kPa) greater than the specified reseal pressure in the flow direction.Specified ResealPressure RangeCracking PressureOffset Range0.00 - 1.00 psi(
44、0.0 - 6.9 kPa)0.00 - 0.50 psi(0.0 - 3.4 kPa)1.01 - 1.50 psi(6.9 - 10.4 kPa)0.00 - 0.75 psi(0.0 - 5.2 kPa)1.51 - 3.00 psi(10.4 - 20.7 kPa)0.00 - 1.00 psi(0.0 - 6.9 kPa)3.01 psi and greater(20.8 kPa and greater)0.00 - 1.50 psi(0.0 - 10.3 kPa)SAE AS27166 - 8 -3.6.3.1 Minimum flow rate calculations: Cal
45、culations shall be made as follows by the valve using activity, to determine the minimum flow rate required to protect the container (see 6.2):Where: Vc = Volume of container ft (m)Vm = Volume of material in container ft (m)3.6.4 Operating life: The valves shall withstand 2500 cycles, at ambient con
46、ditions, from the closed position to the open position for either or both positive and negative pressure differentials, as applicable for the type concerned.3.6.5 Environmental tests: The valves shall be capable of withstanding the following environmental conditions when tested as specified in 4.7.3
47、.3.6.5.1 Temperature: The valves shall be capable of withstanding, without degradation of performance attributes, temperatures ranging from -80F to +160F (-62C to +71C) during operation and nonoperation.3.6.5.2 Humidity: The valves shall be capable of withstanding, without degradation of performance
48、 attributes, relative humidity up to 95 percent at 160F (71C) during operation and nonoperation.3.6.5.3 Vibration: The valves shall be capable of withstanding, without degradation of performance attributes, vibration incident to service use during operation and nonoperation.3.6.5.4 Sand and dust: Th
49、e valves shall be capable of withstanding, without degradation of performance attributes, sand and dust particles encountered in desert areas during operation and nonoperation.3.6.5.5 Rough handling: The valves shall be capable of withstanding, without degradation of performance attributes, rough handling which may be encountered during shipping and service life.3.6.5.6 Salt fog: The valves shall be capable of withstanding, without degradation of performance attributes, exposure to salt atmosphere as encountered in coastal areas.3.7 Identification of produ
