1、MILITARY SPECIFICATION DOD-V-24657(SH) 22 July 1985 VALVE ACTUATOR, DIRECT COUPLED, GEAR DRIVEN ELECTRICALLY POWERED FOR NAVAL SHIPBOARD PROPULSION AND AUXILIARY SYSTEMS (METRIC) This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, and is available for use
2、 by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification describes an electrically powered, directly coupled, gear driven valve actuator primarily for valves in main propulsion, auxiliary and cargo systems of Naval ships. 1.2 Classification. Actuators sha
3、ll be characterized by the following types, classes, and services, as specified (see 6.2.1): Type I - Actuator for gate and globe valves Type II - Actuator for quarter turn valves (90 degrees) Class I - Material for general application Class II - Material for non-magnetic and corrosive environment C
4、lass III - Material for light weight application Service I - Submersible Service II - Explosion proof Service III - Submersible and explosion proof Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to
5、: Commander, Naval Sea Systems Command, SEA 5523, Department of the Navy, Washington, DC 20362-5101 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. FSC 4810 DISTRIBUTION STATEMENT A Approved for public relea
6、cp: distribution unlimited THIS DOCUMENT CONTAINS /x PAGES . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. Unless otherwise specified, the follow- ing specificati
7、ons and standards of the issue listed in that issue of the Depart- ment of Defense Index of Specifications and Standards (DoDISS) specified in the solicitation form a part of this specification to the extent specified herein. SPECIFICATIONS FEDERAL QQ-C-46 5 QQ-N-286 TT-P-1757 MILITARY MIL-S-90 1 MI
8、L-E-9 17 MIL-S-1222 MIL-E-2036 MIL-C-2212 MIL-G-3787 MIL-S-8660 MIL-P-15024 - Copper-Aluminum Alloys (Aluminum Bronze) (Copper Alloy Numbers 606, 614, 630, 632M, and 642); Rod, Flat Products With Finished Edges (Flat Wire, Strip, and Bar), Shapes, and Forgings. - Nickel-Copper-Aluminum Alloy, Wrough
9、t. - Primer Coating, Zinc Chromate, Low-Moisture- Sensitivity. - Shock Tests, H.I. (High-Impact); Shipboard Machin- - Electric Power Equipment, Basic Requirements - Studs, Bolts, Hex Cap Screws, and Nuts. - Enclosures for Electric and Electronic Equipment, - Controllers, Electric Motor A.C. or D.C.,
10、 and - Glass, Laminated, Flat; (Except Aircraft). - Silicone Compound, NATO Code Number S-736. - Plates, Tags and Bands for Identification of ery, Equipment and Systems, Requirements for. (Naval Shipboard Use). Naval Shipoard. Associated Switching Devices. Equipment . MIL-P-15024/5 - Plates, Identif
11、ication. MIL-E-15090 MIL-E-16298 MIL-M-17059 MIL-M-17060 MIL-L-17331 MIL-S-22473 MIL-L-24131 MIL-L-24478 MIL-L-24479 MIL-B-24480 - Enamel, Equipment, Light-Gray (Formula No. 111). - Electric Machines Having Rotating Parts and - Motors, 60-Cycle, Alternating-Current, Fractional - Motors, 60-Hertz, Al
12、ternating-Current, Integral- - Lubricating Oil, Steam Turbine and Gear, Moderate - Sealing, Locking, and Retaining Compounds: - Lubricant, Colloidal Graphite In Isopropanol. - Lubricant, Molybdenum Disulfide in Isopropanol. - Lubricant, Red Lead and Graphite in Mineral Oil. - Bronze, Nickel-Aluminum
13、 Castings, for Seawater Associated Repair Parts: Packaging of. H.P. (Shipboard Use). Horsepower, Shipboard Use. Service. (Single-Component ) Service. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILITARY (Continued) DOD-G-24508 - MIL-P-2 4 5 48
14、- MIL-S-45 180 - STANDARDS FEDERAL FED-STD-HZ8 - MILITARY MIL-STD-108 - MIL-STD-167-1 - MIL-STD-202 - MIL-STD-271 - MIL-STD-461 - MIL-STD-462 - MIL-STD-740 DOD-STD-1399, - Section 300 (Copies of specifications tion with specific acquisition activity or as directed by the 2.2 Other publications. Grea
15、se, High Performance, Multi-Purpose (Metric). Penetrating Fluid. Sealing Compound, Gasket, Hydrocarbon Fluid and Water Resistant. Screw-Thread Standards for Federal Services. Definitions of and Basic Requirements for Mechanical Vibrations of Shipboard Equipment Enclosures-for Electric and Electronic
16、 Equipment. (Type I - Environmental and Type II - Internally Excited) . Component Parts. Test Methods for Electronic and Electrical Nondestructive Testing Requirements for Metals. Electromagnetic Emission and Susceptibility Requirements for the Control of Electromagnetic Interference. Measurement of
17、. and Acceptance Criteria of Shipboard Equipment. Electric Power, Alternating Current (Metric). Electromagnetic Interference Characteristics, Airborne and Structureborne Noise Measurements Interface Standard for Shipboard Systems and standards required by contractors in connec- functions should be o
18、btained from the contracting contracting officer.) The following documents form a part of this - specification to the extent specified herein. The issues of the documents which are indicated as DoD adopted shall be the issue listed in the current DoDISS and the supplement thereto, if applicable. AME
19、RICAN NATIONAL STANDARDS INSTITUTE (ANSI) B1.1 - Unified Inch Screw Threads (UN and UNR Thread Form). (DoD adopted) (Application for copies should be addressed to the American National Standards Institute, 1430 Broadway, New York, NY 10018.) AMERICAN PETROLEUM INSTITUTE (API) STD 607 - Fire Test for
20、 Soft-Seated Ball Valves. (Application for copies should be addressed to the American Petroleum Institute, 2101 L Street, W, Washington, DC 20037.) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-(Industry association specifications and standards a
21、re generally available for reference from libraries. They are also distributed among technical groups and using Federal agencies.) 2.3 Order of precedence. In the event of a conflict between the text of this specification and the references cited herein, the text of this specifica- tion shall take p
22、recedence. 3. REQUIREMENTS 3.1 First article. When specified (see 6.2.1), a sample shall be sub- jected to first article inspection (see 4.3 and 6.3). 3.2 Materials. 3.2.1 Actuator housing. Actuator housing material shall be in accordance with table I. Actuator housing class shall be as specified (s
23、ee 6.2.1). TABLE I. Actuator housing material. Class Application Material Class I General Ductile iron, nodular iron, steel, titanium, bronze MIL-B-24480 or QQ-C-465, alloy 632M Class II Non-magnetic and Titanium, bronze corrosive environment MIL-B-24480 or QQ-C-465, alloy 632M Class III Light weigh
24、t Titanium 3.2.2 Drive assembly. The actuator valve stem drive assembly materials shall be compatible with the valve stem to preclude galling and limit wear. 3.2.3 Painting. External surfaces, except threads and nuts, constructed of non-corrosion resistant material shall be cleaned and painted in ac
25、cordance with TT-P-1757 and MIL-E-15090, type II, class II materials. Mechanical contact surfaces of supports, items requiring adjustments, internal surfaces and surfaces prepared for welding shall not be painted. 3.2.4 Prohibited materials. 3.2.4.1 The following materials and forms of materials sha
26、ll not be used: (a) Magnesium. (b) Cadmium. (c) Cast iron. (d) Gravity fed aluminum castings. (e) Zinc castings. (f) Zinc plating. D Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-O 3.2.4.2 The actuators shall not contain metallic mercury or mercury
27、 compounds, and shall be free from mercury contamination during manufacturing, testing, and inspection. 3.2.4.3 Any material emitting toxic gases or liquids during high tempera- ture operation or during fire shall not be used. 3.2.5 Recovered materials. Unless otherwise specified herein, all equip-
28、ment, material, and articles incorporated in the products covered by this specification shall be new and may be fabricated using materials produced from recovered materials to the maximum extent practicable without jeopardizing the intended use. The term “recovered materials“ means materials which h
29、ave been collected or recovered from solid waste and reprocessed to become a source of raw materials, as opposed to virgin raw materials. None of the above shall be interpreted to mean that the use of used or rebuilt products is allowed under this specification unless otherwise specifically specifie
30、d. . 3.2.6 Lubricants and compounds. Lubricants and compounds identified as shown below shall be specified for shipboard maintenance. This requirement only applies to applications where forces afloat may have to maintain or assemble and disassemble the valve on board ship. This requirement does not
31、apply to lubri- cants and compounds used only in the manufacturing process such as cutting oils. (a) Lubricants (1) Lubricating oil in accordance with MIL-L-17331 (Military (2) Grease in accordance with DOD-G-24508. symbol 2190 TEP). (b) Anti-galling compounds (1) Graphite in isopropanol in accordan
32、ce with MIL-L-24131 (2) Molybdenum disulfide in isopropanol in accordance with (3) Red lead and graphite in mineral oil in accordance with (Military symbol CGI). MIL-L-24478. MIL-L-24479. (c) Sealing compound in accordance with MIL-S-45180, type II. (d) Silicone compound in accordance with MIL-S-866
33、0. (e) Locking compound in accordance with MIL-S-22473, grade AV. (f) Penetrating fluid in accordance with MIL-P-24548. 3.3 Mechanical requirements. The actuator shall consist of the mechanical and electrical components in an enclosure and shall be mounted upon the valve or shall be attached to the
34、valve by a rigid rod transmission system, as specified (see 6.2.1). The actuator shall be motor driven with an integral manual actuator. 3.3.1 Installation, operation and maintenance space. Actuator installa- tion, operation and maintenance space shall be as specified (see 6.2.1). 5 Provided by IHSN
35、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3.3.2 External seals. External seals of the actuator and the valve drive assembly shall be constructed to prevent damage by shipboard environmental dirt, and shall be compatible with steam condensate, lubricating oil,
36、Naval distillate fuel (P-76), aviation fuel (JP-5), seawater, and mixtures of the preceding. 3.3.3 Bolting. The actuator to valve fasteners shall be in accordance with MIL-S-1222 and shall be corrosion resistant steel for class I and III housings and nickel-copper-aluminum alloy in accordance with Q
37、Q-N-286 for class II housings. Threads shall be in accordance with FED-STD-H28 or ANSI B1.1. Set screws shall not be used. 3.3.4 Gears. The actuator shall transmit power from the motor to the valve stem through worm gear, hypoid gear, planetary gear, bevel gear or spur gear systems. Gear systems tha
38、t are not self-locking shall employ ratios that will result in no change of position of the valve upon interruption of electric power to the actuator from the forces applied to the valve disc by the piping system fluid. Brakes, palls or other latching mechanisms shall not be used. The gears shall be
39、 steel, bronze or a combination of steel and bronze. 3.3.4.1 Lubrication. The gear train and stem drive assembly shall be lubricated with grease in accordance with DOD-G-24508 or shall be permanently lubricated. 3.3.4.2 Hammer blow. Type I actuators may be provided with a hammer blow device for elec
40、tric and manual actuation. 3.3.5 Manual actuation. 3.3.5.1 Handwheel. 3.3.5.1.1 The handwheel shall be nonrising. The valve shall close by a clockwise rotation of the handwheel when facing the handwheel. 3.3.5.1.2 The direction of movement for closing and opening the valve shall be indicated by arro
41、ws and “t“-OPEN/SHUT-“ shall appear on the face of the handwheel rim. 3.3.5.1.3 Handwheel diameter and maximum tangential force shall be as specified in table II. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-O m DOD-V-2Y657 L(8 W 7777906 02752Y8
42、 L W DOD-V-24657(SH) TABLE II. Handwheel diameter and tangential force. Handwhe el di ame t er millimeters (mm) (inches) 50 (2) 80 (3) 100 (4) 125 (5) 150 (6) 180 (7) 200 (8) 230 (9) 250 (10) 280 (11) 300 (12) 350 (14) 400 (16) 450 (18) 600 (24) 690 (27) 750 (30) 900 (36) 535 (21) Maximum tangential
43、 force newtons (pounds) 400 (90) 440 . (98) 470 (106) 500 (112) 530 (118) 540 (121) 550 (124) 570 (127) 580 (130) 590 ( 133) 600 (135) 615 (138) 630 (141) 640 (144) 655 (147) 670 (150) 670 (150) 670 (150) 670 (150) 3.3.5.2 The actuator shall be provided with a differential drive or with a positive e
44、ngagement, non-slipping motor priority mechanism to automatically shift from the electric to manual and the manual to electric mode of operation. Electric operation shall not cause the handwheel to turn. 3.3.5.2.1 Failure of the electrical components shall not prevent manual actuation of the valve.
45、3.3.6 Enclosure. The actuator shall comply with MIL-STD-108 and MIL-E-2036 for one of the enclosure services specified in table III (see 6.2.1). TABLE III. Actuator enclosure. Service Description Service I - Submersible, 15 meters Service II Explosion proof Service III Submersible and explosion proo
46、f, 15 meters 3.3.7 Torque and travel activated devices. Valve stem travel in both opening and shutting directions shall be stopped by means of a switch activated by stem position and by another adjustable switch activated by torque applied to the valve stem by the actuator. The position switch shall
47、 be capable of adjust- ing the valve stroke such that the valve stem will cycle between any two points within-the allowable range of stem travel as determined by valve design. Torque 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-V-24b57 48 W
48、7779906 0275249 3 W switches shall be provided with calibration markings. The travel activated device shall remain in step with the valve position during both electrical and manual actuation of the valve. The accuracy of the torque switch shall be plus or minus 5 percent of the torque setting. The a
49、ccuracy of the travel activated device shall be plus or minus 1/2 degree for rotational position and plus or minus 1.2 mm (0.05 inch) for linear position. 3.3.7.1 Indicator lights and other equipment. When specified (see 6.2.1), the travel activated device shall control indicator lights and other equipment. 3.3.7.2 Electrical contacts. Unless otherwise specified (see 6.2.1), electrical contacts of the travel and torque activated devices shall
