1、15 December 1997 SUPERSEDING 19 March 1986 MIL-V-4672OB(AT) PERFORMANCE SPECIFICATION VALVE, SOLENOID This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers two types of 24-volt 0, solenoid actuated, hydrauli
2、c directionat control valves with an operating pressure of 3000 pounds per square inch (psi) (20 685 kilopascals va) (see 6. i). 1.2 Classification. Valves should be of the following types, as specified (see 6.2): Type I Type II - Two position, four-way, rated flow capacity: 6 gaiions per - Two posi
3、tion, two-way, rated flow capacity: 3.5 gai/min minute (gdrnk) (0.38 liters per second (L/s). (0.22 L/s). Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: U.S. Army Tank-automotive and Armaments
4、Command, ATTN: AMSTA-TR-EBLUE, Warren, MI 48397-5000 by using the Standardization Document Improvement Proposal (DD Form 1426), appearing at the end of this document, or by letter. AMSC N/A FSC 2590 DISTRIBUTION STATEMENT A. Approved for public release, distribution is unlimited. Provided by IHSNot
5、for ResaleNo reproduction or networking permitted without license from IHS-,-,-0b 204721b 4T7 MIL-PRF-4672OC 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents in other sections of
6、 this specification or recommended for additional Somation or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet d specified requirement documents cited in sections 3 and 4 of this specification, whether or not they
7、 are listed. 2.2 Government documents. 2.2.1 Specifications. standards. and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specised herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Dep
8、artment of Defense Index of Specifications and Standards (DoDISS) and supplement thereto, cited in the solicitation (see 6.2). STANDARDS DEPARTMENT OF DEFENSE MIL-STD-462 MIL-STD-8 1 O - Measurement of Electromagnetic Interference Characteristics, Test Methods Standard for (see 4.3. i). - Environmen
9、tal Test Methods and Engineering Guidelines (see 4.3.1). (Unless otherwise indicated, copies of the above specifications and standards are available fiom the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 191 11-5094.) 2.2.2 other Government documents. drawing
10、s. and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specied herein. Unless otherwise specified. the issues are those cited in the Solicitation. NCLEAR REGULATORY COMMISSION (NRC) Code of Federal Regulations (CFR)- Title
11、 10, Parts 30 and 40. (Application for copies should be addressed to the Superintendent of Documents, U.S. Government Printing Wce, Washington, DC 20402.) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-U 0b 2047217 333 M MIL-PRF-4672OC DRAWINGS DE
12、PARTMENT OF DEFENSE 9008233 9098673 - Valve, Solenoid (Type I) (Interface). - Valve, Solenoid (Type II) (Inte&ace). (Copies of these drawings are available from the U.S. Army Tank-automotive and Armaments Command, ATTN: AMSTA-TR-EBLUE, Warren, MI 48397-5000.) 2.3 Non-Government publications. The fol
13、lowing documents form a part of this 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 DoD
14、ISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN SOCIETY FOR TESTING AND MATEWS (ASTM) ASTM B117 - Standard Practice for Operating Salt Spray (Fog) Apparatus OD Adopted). (Application for copies should be addressed to the American Society for Testing and Materials (A
15、STM), 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this specification takes precedence. Nothing in this document, however, supersedes applicable laws and re
16、gulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified (see 6.2), first article samples shall be subjected to fust article inspection in accordance with 4.1.1. 3.2 Desim. materials. and manufacturing processes. Unless otherwise specified, the desig
17、n, materiais, and mandacturing process selection shall be the prerogative of the contractor as long as all articles submitted to the Government hlly meet the operating, interface, ownership and support, and operating environment requirements specified. (Asbestos, cadmium and radioactive materials sh
18、d not be used in this item. Radioactive material is defined by Title 1 O, CFR, Parts 30 and 40, and other radioactive materials in which the specific activity is greater than 0.002 microcuries per gram or the activity per item equals or exceeds 0.01 microcuries). 3 Provided by IHSNot for ResaleNo re
19、production or networking permitted without license from IHS-,-,-MIL-PRF-4672OC 3.2.1 Metals. All metals used in valve construction, except metal which is in constant contact with the hydraulic fluid, shall be of corrosion-resisting type or shall be adequately protected to resist corrosion during the
20、 normal service life of the valve and shall meet the requirements of salt spray 3.6.4. 3.2.1.1 Dissimilar metals. Dissimilar metals shall be protected from galvanic corrosion. 3 2.2 Recycled. recovered. or environmentally preferable materials. Recycled, recovered, or environmentally preferable mater
21、ials should be used to the maximum extent possible provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. 3.3 ODerating requirements. The valve shall meet the following performance requirements. 3.3.1 Operati
22、ng time. 3.3.1.1 Type I. The valve shall operate (change port interconnection) in not more than 0.05 second (s), with 18 V irect current (dc) applied. 3.3.1.2 Type II. The valve shall operate (change port interconnection) in not more than 0.07 s, with 18 Vdc applied. 3.3.2 Operating pressure. The va
23、lve shall operate with any pressure fiom 250 psi (1 724 Ba) applied to any port except return, and shall operate at any pressure within a pressure differential range, between the pressure port and rem port, from 250 psi to 3000 psi (1724 kPa to 20 685 kPa) (retuni port applicable to type I only) whi
24、le Using a conforming hydraulic fluid (see 6.3). 3.3.3 Operab voltwe. The valve shall operate at any voltage within a range of 18 to 30 Vdc, with operating pressure applied. 3.3.4 Operating current. The valve shall require no more than 1 .O ampere (A) at 24 Vdc to operate. 3.3.5 Rated flow and messu
25、re drop. 3.3.5.1 Type I. The rated flow capacity of the valve using hydrauiic fluid (see 6.3) shall be 6 gdmin (0.38 Us), through any interconnected ports, with a pressure drop across the valve to be not more than 150 psi (1 034 a). 4 Provided by IHSNot for ResaleNo reproduction or networking permit
26、ted without license from IHS-,-,-MIL-PRF-4672OC 3.3.5.2 Type II. The rated flow capacity of the valve using hydraulic fluid (see 6.3) shall be 3.5 gdmin (0.22 L/s) with a pressure drop across the valve to be not more than 60 psi (413.7 Ha). 3.3.6 Proof pressure. 3.3.6.1 Type I. The valve shall withs
27、tand a proof pressure of 4500 psi (31 026 a), except the return port shall withstand a proof pressure of 1500 psi (10 342 a), without leakage or damage. 3.3.6.2 Type II. The valves shall withstand a proof pressure of 4500 psi (3 1 026 Da) without external leakage or damage. 3.3.7 Burst pressure. 3.3
28、.7.1 Tvpe I. The valve ports shd withstand hydraulic pressure of 7500 psi (5 1 710 Ha), except the return port shall withstand pressure of 2500 psi (17 237 kPa) without bursting. 3.3.7.2 Type II. The valve shall withstand hydraulic pressure of 7500 psi (51 710 Wa) without bursting. 3.3.8 Leakage. 3.
29、3.8.1 Pressure Dort. 3.3.8.1.1 Type I. The valve, in the de-energized position, shall withstand hydraulic pressures up to and including 3000 psi (20 685 kPa) applied at the pressure port. Resultant combined internal leakage from cylinder number 2 port and return port shall be not greater than 0.0035
30、 cubic feet per minute (ft3/min) (10 cubic centimeters per minute (cm3/min), with no externai leakage. 3.3.8.1.2 Type II. The valve, in the energized position, shall withstand hydraulic- pressures up to and including 3000 psi (20 685 kPa), applied at one port, with resultant internal leakage from th
31、e other port not in excess of 0.0018 ft3/min (5 cm3/min). 3.3.8.2 Return port jme I onlv). The valve, in the de-energized position, shall withstand application of hydraulic pressure of 10 psi (69 kea) at the return port and cylinder number 2 port without external leakage. 5 Provided by IHSNot for Re
32、saleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-4672OC 3.3.9 Solenoid temperature rise. The valve solenoid shall not exceed a temperature rise greater than 39 degrees Fahrenheit (OF) (3.9 degrees Celsius (OC) per minute of continuous operation, when used with voltage
33、s specified herein. 3.3.10 Dielectric strength. The solenoid shall withstand application of 1000 V root mean square (rms), (60 hertz (Hz) potential, between terminals and ground, without flashover. Insulation shall evidence no loosening, cracking, charring, burning, smoking, rupture, or other darnag
34、e resulting in a reduction in dielectric strength, 3.4 Interface requirements. 3.4.1 Overall envelope and interfaces. The valve shall fit into the hydraulic system with the loader-transporter, guided missile (Hawk Loader) in accordance with the envelope dimensions and the electrical and mechanical i
35、nterfaces locations and dimensions of drawings 9008233 or 9098673. 3.4.2 Wei&. The gross weight of the valve shall not exceed 2 pounds (lb) (0.9 kilogram (kg). 3.4.3 Solenoid. The solenoid for operating the hydraulic valve shall be compact, designed for continuous or intermittent duty, and shall be
36、provided with single coil windings. The solenoid shall be totally enclosed and shall be so designed that hydraulic fluid can at no time come in contact with the electrical windings. 3.4.4 Coils. The coils shall be evenly wound and insulated to meet the performance requirements specified herein. The
37、coils shall be completely insulated fiom all other parts of the valve. Coils shall be suitably taped and impregnated, as required, to prevent damage under prolonged exposure to environmental conditions. 3.4.5 Radio interference suppression. The valve, solenoid, shall conform to electromagnetic compa
38、tibility requirements of figures 1 and 2. 3.5 wnershiD and support requirements. 3.5.1 Endurance. The valve shall withstand 20000 cycles of operation at 3000 psi (20 685 kPa) hydraulic pressure, without damage. A cycle of operation shall consist of operation of the valve fiom the de-energized positi
39、on to the energized position, and back to the de-energized position. The valve shall subsequently meet the requirements of 3.3.2 through 3.3.6, and 3.3.8. 3.5.2 Safty. Valves shall be physically and electrically safe to operate. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted
40、without license from IHS-,-,-MIL-PW-4672OC 3.5.3 Interchangeability. Valves shall be repairable, or functionally and physically interchangeable with respect to like assemblies, sub-assemblies and replaceable parts of the same type and design, regardless of mandacturer. 3.5.4 Identification. Prominen
41、tly display the valve designator on the outer surface of the valve, and shall include as a minimum the following: a. Nomenclature “Valve, Solenoid. b. Military part number. c. When required, serial numbers shall be defined (see 6.2). d. Manufacturers CAGE code and name. e. Date of manufacture. f Con
42、tract or order number. g. Symbol “US. 3.6 Operating environment reauirements. The valve shall operate under the following environmental conditions, without degradation in performance. 3.6.1 High temperature. The valve shd withstand exposure to a high temperature of 160 2 5F (71 2 3”C), without damag
43、e, and shall conform to performance requirements of 3.3.2, 3.3.3,3.3.5, and 3.3.8 during exposure. Subsequent performance shall conform to requirements of 3.5.1. 3.6.2 Low temperature. The valve shall withstand exposure to a low temperature of -65 (+5, -0F) (-54, (+3, -OC), without damage, and shall
44、 conform to requirements of 3.3.2. 3.3.3, 3.3.5, and 3.3.8 during exposure. Subsequent performance shall conform to the requirements of 3.5.1. 3.6.3 Fungus. The valve shall withstand exposure to fungus. Subsequent performance shail conform to 3.3.2,3.3.3,3.3.5, and 3.3.8. 3.6.4 Salt sprav. The valve
45、 shall withstand exposure to salt spray, with subsequent performance conforming to 3.3.3,3.3.5, and 3.3.8. 3.6.5 Sand and dust. The valve shall withstand exposure to sand and dust, without damage. Subsequent performance shall conform to 3.3.2, 3.3.3, 3.3.5, and 3.5.1. 3.6.6 Shock. The valve shall wi
46、thstand exposure to shock, without damage or loosening of components. Subsequent conformance shall conform to 3.3.2, 3.3.3, 3.3.5, and 3.3.6. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-m 7Rb 2047222 7T0 m MIL-PRF-4672OC . 3.6.7 Vibration. The
47、valve shall withstand vibration, without loosening of components. Vibration shall be applied in the direction of each of the three major axes, without damage or loosening of components. Subsequent performance shall conform to 3.3.2,3.3.3,3.3.5, and 3.5.1. 3.6.8 Humidity. The valve shall withstand ex
48、posure to humidity in and with subsequent performance conformance in 3.3.5 and 3.3.4. 4. VERIFICATION 4.1 Classification of inspection: a. First article inspection. 1. Preproduction inspection. 2. Initiai production inspection. b. Conformance inspections. 4.1.1 First article inspection. When first a
49、rticle inspection is required (see 6.2 and 6.5), it shali be performed on preproduction or initial produotion samples as specified herein. 4.1.1.1 PreDroduction inspection. When specified (see 6.2), the preproduction sample shall consist of four valves. The preproduction inspection shall consist of the examinations and tests of table I. 4.1.1.2 Initial production inspection. When specified (see 6.2), the initial pr
