1、MIL-V-2963A W 9999906 1235604 566 W ! MIL-V -2963A(S”S, 8 November 1954 PERSEDING - MIL-V-2963 4 September 1951 MILITARY SPECIFICATION VALVES, GLOBE TYPE AND ANGLE TYPE, ELECTRIC MOTOR OPERATED, HANGER AND TURRET SPRTNKLING 1. SCOPE 1.1 Scope. - This specification covers electric motor operated valv
2、es suitable for sea water 1.2 Classification, - The valves shall be of the following types as specified (see 6. 1): service. Type1 -Globe. Type I1 - Angle. 2. APPLICABLE DOCUMENTS; 2. 1 The following specification, standards invitation for bids, form a part of this specification: and drawings, of th
3、e issue in effect on date of SPECIFICATIONS FEDERAL i W-G-632 - Grease: Lubricating, Automotive ahd Industrial. PPP-B- 601 - Boxes, Wood, Cleated-Plywood. MILITARY JAN-P-100 - Packaging and Packing for Overseas Shipment - General JAN-P-106 - Packaging and Packing for Overseas Shipment - Boxes; MIL-P
4、-116 - Preservation, Methods of. JAN-B-121 - Barrier-Materials, Greaseproof. JAN-P-125 - Packaging and Packing for Overseas Shipment - Barrier- JAN-P-127 - Packaging and Packing for verseas Shipment - Tape, MIL-B-233 - Boxes, Repair Parts. MIL-N-894 - Nickel-Copper Alloy, Bars, Plates, and Other Wro
5、ught Forms MIL-B-994 - Brass, Naval, Wrought. MIL-V-1202 - Valves, Angle, Valve, Cross; Valve Globe; Bronze, MIL-C-2212 - Controllers and Master Switches, Alternating-Current MIL-F-3541 - Fittings, Lubrication (Hydraulic). MIL-1-15024 - Identification Plates, Information Plates and Marking Specifica
6、tion. Wood, Nailed. Materials, Waterproof, Flexible. Adhesive, Pressure-Sensitive, Water-Resistant. loo w. s. P. (Naval Shipboard Use). Information for Identification of Electrical, Electronic and Mechanical Equipment. FER SUP. CLASS . QW-0-MV-Y-116, Provided by IHSNot for ResaleNo reproduction or n
7、etworking permitted without license from IHS-,-,-z 1 MIL-V-2963A 9799906 1235605 4T2 _. . _. MIL 4-29 63A(sHIps) MILITARY (contd. ) . MIL-B-15071 - Books, Instruction; Preparation, Contents, and Approval. MiL-P-16298 - Preservation, Packaging, Packing and Marking of Electric . MILS-15083 - Steel; Ca
8、stings. Machines Having Rotating Parts (Includes Assxiated Repair Parts). MIL-B-16443 - Bronze, Manganese: Castings. MIL-B-16541 - Bronze, Valve: Castings. MIL-M-16576 - Metal, Gun: Castings. MIL-M-17059 - Motors, Alternating-Current, Fractional HP (Sh;pb3ard Use); MIL-F-17292 - Format for List of R
9、epair (Spare) Parts for ShipbDard Mechanical and Electrical Equipment. MiL-D-17650 - Disc, Valve, N3n-Metallic (Synthet:c Rubberj, Insert Type. MIL-P-17652 - Preparatim for Delivery of Electronc, Electrical and MIL-N-20164 - Nickel-Copper-Alby Castings. Elec tr o-Mechanical Parts. U.S. ARMY 3-182 -
10、Compound, Insulation, Ignition. NAVY DEPARTMENT General Specifications for Inspection of Material. 42B5 - Bearings, Ball. 42B10 - Bearings, Rrller. STANDARDS MILARY MIL-STD-1% - Sampling Prxedures and Tables for Inspectton by MIL-STb-129 - Marking for Shipment and Storage. Attributes. DRAWINGS EUREA
11、U OF SIpS B-64 - Handwheels for Valves, 9S-3980 - Methods (Steel) of SuppDrEng CA, Fixtures, PNL, Appliances, etc. for Steel and Aluminum Decks and BHD (Except Within Magnetic Circle). 943-5235 - Terminal Tubes, Steel, Types 51 (Machined Alternate) and 52 (Drawn)for Electric CA Entering WT Sheet Ste
12、el ENCL. 94-5355 - Fitters, Steel, Type B, fw Terminal Tubes. (Copies of specifications, standards, drawings, and publications requfred by contractors in connection with specific procurement functions should be obtained from the procuring agency or as directed by the contracting officer. ) 2.2 Other
13、 publications. - The following dxument forms a part of this specification. Unless Dtherwise indicated the issue in effect on date of invitation for bids shall apply. CONSOLIDATED CLASSIFICATION COMMITTEE Consolidated Freight Classification Rules. (Application for copies should be addressed to the Co
14、nsolidated Classification Committee, 202 Chicago Union Station, Chicago 6, Ill. ) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- - -. MIL-V-29b3A M 999990b L235bOb 339 MIL-V-2963A(SHIPS) 3. REQUIREMENTS 3.1 Desicm eneral - The valves and operating
15、units shall be of satisfactory design and as compact ana- i t in weigh as practicable without sacrifice of strength, durability, serviceability or efficiency. The electric motor operated valves shall consist of a valve complete with a handwheel, special valve stem, electric motor, drive mechanism, l
16、imit switches, and controller with electric control stations as specified (see 6.1). commercial standard suitable for the purpose intended. Cast iron or semi-steel shall not be used. ML-M-16576 as specified (see 6.11. 3.2.2 Stem. - The valve stem shall be made of nickel-copper alloy conforming to Sp
17、ecifica- tion MIL-N-8Kd shall be of the ttrisingJ type. It shall have Acme threads which shall operate in a nut 3f cast manganese brmze or gun metal composition conform:ng to Specification MIL-B-16443 or MIL-M-16576, respectively, upon which shall be attached the main operating gear. The nut shall b
18、e provided with suitable ball or roller bearings conforming to Specification 42Fk or 42B10, to take radial and thrust loads of the valve stem in both directions. The arrangement of the stem, operating nut, and bearings shall be such as to prevent the valve opening due to failure of any of these part
19、s. The valve stem shall be prevented frDm rotating by positive means when the bronze nut is operated. tionMIL-D-17vezed in the metal diskand retained by the diskplate or keeper. The attachment of the disk to the stem shall be of rugged construction and ample size to amid possibility of falure at thi
20、s point. The material 3f the disk and the disk plate or keeper shall be bronze or gun metal conformng to Specification MIL-B-16541 or MIL-M-165/6, respectively, and shall be the same as the valve seat. 3. 2. 4 Valve seats. - Separable seats shall be of nickel-copper alby in accwdance with SpeAfi- ca
21、tian MIL-N-694 or MIL-N-20164. Integral seats shallbe bronze in accordance with MIL-E-16541. 3.2.5 Yoke. - The yoke shall be of galvanized class B steel conforming to Specifka- tim MIL-S-15Yokes shall be fitted to the valve body by zinc 3r cadmium plated steel bolts and skured with nuts of rolled br
22、ass conforming to Specification MIL-B-994. The number and Spacincf of the bolts or studs shall be symmetrical to permit mounting of the yoke and electric power unt in four psitions in relation to one another and to the valve. 250 pounds per square inch (p. s. i. ). The operation of the valve shall b
23、e arranged to open with the line pressure and to close by thrust against the pressure. 3.2 Materials, general. - The materials of parts n3t specified herein shall be of high grade 3.2. 1 E3 number : : inspection lot : : 2to8 :3 : Q to 15 :4 : 16 to 25 6 : 26 to 40 :6 : 41 to 65 :8 : 66 to 110 : 10 :
24、 111 to 180 : 13 : 181 to 300 : 17 : 301 to 500 : 22 : 501 and over : 28 1 1 1 1 1 1 2 2 3 3 O O O O O 1 1 2 2 . :. o. 4.3.3 Sampling for group C tests. - A sample number of assembled valves in accordance with table IV shall be selected by the Government inspector from the end of each months product
25、ion and shall be subjected to the group C tests. Table IV - Sampling for group C tests. Number of valves : : Number of valves : to be selected . i on the contract i for group c tests i : 65 and under : 1 : 66 to 300 2 : 301 to 800 3 % 4 Tests. - 4.4.1 Group A tests. - 9ach of the sample valves selec
26、ted in accordance with table TI shall be subjected to each of the tests specified herein which shall be conducted or witnessed by the Govern- ment inspector, and the results of each test compared with specification requirements. Failure to conform to the specification requirements for any group A te
27、st shall be counted as a defect and the valve shall be rejected. If the number of such nonconforming valves in any sample exceeds the acceptance number for that sample, the lot represented by the sample shall be rejected. Rejected lots may be offered again for Government inspection tests provided al
28、l valves in the lot have been retested by the contractor for test(s) causing rejection and all noncompliance corrected. . Group A tests Reference Visual and dimensional operating test (2 cycles) PDwer input . Manual operation 8 -* L1 -. 4.5.1 4.5.4 4.5.5 4.5.6 Provided by IHSNot for ResaleNo reprodu
29、ction or networking permitted without license from IHS-,-,-MIL-V-29b3A 99999Ob l1235bh2 632 MIL-V -29 63A(SRIPS) Group A tests 1 Ucking mechanism Dielectric strength Hydrostatic bests Reference 4.5.7 4.5.8 4.5.9 4.4.2 Grmp B tests. - Each of the sample valves selected in accordance with table l shal
30、l be subjected to each of the tests specified herein which shall be conducted or witnessed by the Govern- ment inspector, and the results of each test compared with specifzcation requirements. Failure to conform to the specification requirements for any grmp E test shall be counted as a defect and t
31、he valve shall be rejected. if the number of such nonconforming valves in any sample exceeds the acceptance number for that sample, the lot represented by the sample shall be rejected. Rejected lots may be Mered again for Government inspection tests provided all valves in the lot have been retested
32、by the contractor for the test(s) causing rejection and all noncompliance corrected. Group B tests Reference Heating by operation (6 cycles) Torque adjustment 4. 5.10 Submergence test 4. 5.11 4. fi. 4 4.4.3 Group C tests. - Each of the sample valves selected in accordance with tabe IV shall be subje
33、cted to each of the tests specified herein and the results of each test compared with specification requirements. In the event of any failure to conform to the specificatton requirements for any group C test the contractor shall correct the cause of failure on future productionunits and repair the d
34、eficiency in any valves nrt yet shipped. Group C tests Reference Operation at extreme temperatures 4. 5. 12 4.5 Test procedures. - 4.5.1 Each sample valve shall be examined by the Government inspector to verifycmformance to-all of the requirements of this specification which do not involve tests. Th
35、e fit of parts shall be observed with particular reference to the interchangeability of such parts as are liKely to require replacement during the normal service life of the equipment. 4.5.2 Repair parts. - Each repair part shall be subjected tc a careful examination to ascertain that the materials,
36、 workmanship and finish are first class in every respect and that theycomply fully with the manufacturers approved drawings. The principal object of this inspection shall be to determine if the repair parts are exact duplicates of those used in the equipment. If the Government inspector has reason t
37、o dcnibt the ready interchangeability of the repair parts with the original equipment parts, he may require a suitable demonstration of such interchangeability. 4.5.3 Electrical equipment. - Motors, controllers and master switches shall be tested as required by Specifications MIL-M-17059 and MIL-C-2
38、212, as applicable. - 4.6.4 Operating tests. - 4.5.4.1 Each sample valve selected in accordance with 4.3.1 shall be closed and opened twice by the electrical equipment. Each sample valve selected in accordance with 4.3.2 shall be closed and 9pened six times and the temperotures of the electrical equ
39、ipmeck observed. Opening and closing time shall be Qbserved. -) - 1 9 1 * Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-*ml -V-2Q53A(Srn) 4.5.4.2 Operating te. shall be made with test Set-up as required by 4.6.9.2 and the petcock in outlet flange o
40、pen. The line pressure shall be 225 p. s. i. 4 5.5 -wer input. - The electrical pwer input shall be measured during closing and opening. 4 5.6 Manual operation. - The valve shali be operated by hand to verify conformance to 3.6.2. 4.5.7 Locking mechanism. - The valve shall be operated by hand and by
41、 electric power to verify all requirements of 3. 6. 4. 4.5.8 Dielectric strength. - The test required by Specifications MIL-M-17059 and MIL-C-2212 shall be repealed. 4.5.9 Hydrostatic tests. - 4.5.9.1 Body tests. - Each sample valve shall be tested to 375 pounds per square inch hydrostatic pressure
42、with valve open to determine that casting is soEnd. Sweating or visible deformation shall cause the valve to be rejected. 4.5.9.2 Ti htness test. - Each sample valve shall be tested to 250 pounds per square inch In conducting this tightness test, a blank flange with petcock shall be secured on outle
43、t valve. With valve closed the hydrostatic pressure shall be applied under the valve seat in the direction to open the valve and there shall be no leakage permitted. 4.5.10 Torque adjustment. - The valve shall be closed and opened with the torque adjustment 4.5.11 Submergence test. - The completely
44、assembled power unt samples shall be given a hydrostatic pressure -9-r with va ve closed to determine that the disk and seat are sound and the valve tight. set at each extreme psition to verify conformance to 3. 7.4. submergence test f9r 1 hourein water under a static head equivalent to 3 feet of wa
45、ter. The pressure may be obtained either by using some hydraulic means, such as a pressure pump, air pressure or by means of a 3 fmt head of water. After submergence the unit shall be capable of operatng as spec:fied in 4.5.4.1. 4.5.12 Extreme temperature test. - Thevalve shall be held 2 hours at ze
46、ro degrees F. and then tested as in 4.5.4. The valve shall be held 2 hours at 150F. and then tested as in 4.5.4. 4.6 InsDection procedures. - For Naval purchases, the general inspection procedures shall be in accordance with General Specifications for Inspection of Material. 5. PREPARATION FOR DELTV
47、ERY 5.1 Preservation and packaging. - 5.1.1 For d2mestic shipment - immediate use. - The valves shall he preserved and packaged in accwdance with commercial practice. 5.1.2 For domestic shipment and storage or overseas shipment. - 5.1.2.1 Valves, power unit and controls. - 5.1.2.1.1 Mechanical compo
48、nents. - External, unpainted ferrous surfaces shall be coated with preservative type P-1 of Specification MIL-P-116. Gear housings shall be flushed with preservative type P-2 of Specification MIL-P-116. All openings in the valve shall be sealed with blank flanges or w3od or plywood covers. Barrier m
49、aterial mnforming to grade A of Specification JAN-B-121 shall be inserted between the wood 3r p1ywoc-d cover and the valve body. 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- - -_ I J MIL-V-2963A 0 9999906 3235634 405 W MIL-V-29 63A(SHIFS) w 6.1.2.1.2 Pclwer-unit and controls. - All openings of the power unit and controls, integrally attached to the valve, shall be sealed with tape conforming to grade
