1、Comments, suggestions, or questions on this document should be addressed to: Commander, Naval Sea Systems Command, ATTN: SEA 05M2, 1333 Isaac Hull Avenue, SE, Stop 5160, Washington Navy Yard DC 20376-5160 or emailed to CommandStandardsnavy.mil, with the subject line “Document Comment”. Since contact
2、 information can change, you may want to verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil. AMSC N/A FSC 4820 INCH-POUND MIL-PRF-32307 11 September 2008 PERFORMANCE SPECIFICATION VALVE, QUARTER TURN, TRIPLE-OFFSET, TORQUE SEATED, SHIPBOARD
3、USE This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers triple-offset torque seated (TOTS), quarter turn valves for fuel oil, aviation fuel, lubricating oil, seawater, auxiliary seawater, freshwater, chill
4、ed water, and potable water piping system services. The associated hydraulic or electric gear operators/actuators are not covered by this specification. 1.2 Classification. 1.2.1 Types. TOTS valves are classified into two types based on materials of manufacture (see table I): a. Type I Non-ferrous b
5、. Type II Ferrous 1.2.2 Body styles. The following TOTS valve body styles are covered by this specification. There are two styles (wafer and lug) and two thicknesses for each (short and long), totaling four style options. Short is equivalent to the face-to-face dimension equivalent of a MIL-V-22133
6、rubber-lined butterfly valve. Long is equivalent to the face-to-face dimension of a MIL-V-24624 high performance butterfly valve. a. A Short wafer b. B Long wafer c. C Short lugged wafer d. D Long lugged wafer 1.2.3 Seat style. Seating may be integral to the valve body or of removable design. a. I I
7、ntegral b. R Removable 1.2.4 Sizes. TOTS valve sizes conform to the following nominal pipe sizes (NPS) in inches. The sizes listed in bold are most common and suggested for use whenever practicable: Size (inches) Size (inches) Size (inches) 2* 4 8 3 5 10 3* 6 12 * - Less common valve sizes, use of w
8、hich should be minimized for standardization and cost considerations. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32307 2 1.2.5 Flange styles. TOTS valves are to be designed for installation between the following flange styles: a. ASME B1
9、6.5 b. NAVSHIPS Drawing 810-1385892 1.3 Part or identifying number (PIN). PINs to be used for TOTS valves acquired to this specification are created as follows: M XX406 _ # X X # X Prefix for Military Specification Specification Number Type (see 1.2.1 Ni-Cu-Al and Flexible Graphite3/ASTM A182/A182M
10、Type F316 ASTM A351/A351M Grade CF8M Composite: 316SS and Flexible Graphite3/Disc ASTM B148 C95800 Ni-Al-Brz ASTM A182/A182M Type F316 ASTM A351/A351M Grade CF8M Stainless steel Stem and stem-to-disc fasteners ASTM B865 N05500 Ni-Cu-Al4/ASTM A479/A479M Type XM 19 Stainless steel Wetted fasteners AST
11、M F468/467 Alloy 400/500 Ni-Cu or Ni-Cu-Al4/ISO 3506-1 Grade A4 Stainless steel ASTM B148 C95800 Ni-Al-Brz ASTM A351/A351M Grade CF8M Stainless steel ASTM B150/B150M C63000 Ni-Al-Brz ASTM A182/A182M Type F316 ASTM A351/A351M Grade CF8M 316SS Other wetted and moving parts ASTM B865 N05500 Ni-Cu-Al4/A
12、STM A182/A182M Type F316 ASTM A351/A351M Grade CF8M Stainless steel Stem seals MIL-P-24396 Braided PTFE Braided Graphite and Graphite MIL-B-24480 ASTM B148 C95800 Ni-Al-Brz ASTM A182/A182M Type F316 ASTM A351/A351M Grade CF8M Stainless steel Brackets and adapters Nickel-Copper QQ-N-281 Ni-Cu NOTES:
13、1/Other materials may be substituted, but the burden of evidence and proof of equivalency or better must be provided by the supplier. 2/Seawater service requires Ni-Cu-Al material. 3/Other seal ring materials or designs may be used if shown to be equal or better and is acceptable to Naval Sea System
14、s Command. Burden of evidence shall be upon the supplier to provide evaluation criteria for compatibility with intended fluids, temperature and pressure. 4/Ni-Cu in accordance with QQ-N-281 or ASTM F468/467 may be substituted where Ni-Cu-Al tensile strength is not required. Provided by IHSNot for Re
15、saleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32307 7 3.2.1 Detrimental materials. Detrimental materials shall not exceed the maximum concentrations as specified in Table II. TABLE II. Detrimental materials. Material Maximum concentration permitted (ppm) Asbestos N
16、one permitted Halogens (total of chloride, fluoride and bromide) 1/1,000 Lead 30Cadmium plating None permitted Mercury and compounds (none intentionally added) 2/10 Sulfur 10,000NOTES: 1/Materials containing more than 1,000 parts per million (ppm) total halogens are acceptable provided only fluorine
17、 exceeds 250 ppm and total leachable halides do not exceed 250 ppm. 2/During manufacture, fabrication, handling, packaging, and packing, TOTS valve materials shall not come in contact with mercury or mercury compounds. 3.2.2 Toxins, carcinogens, reproductive hazards. The material shall have no adver
18、se effect on the health of personnel when used for its intended purpose. The material shall be assessed by the Navy and Marine Corps Public Health Center using the administrative Health Hazard Assessment (HHA). A flowchart for this process can be found in BUMEDINST 6270.8. The HHA is a review of the
19、 material based on information submitted by the manufacturer to assess health hazards associated with the handling, application, use, and removal of the product. The material shall not cause any environmental problems during waste disposal. 3.2.3 Recycled, recovered, or environmentally preferable ma
20、terials. Recycled, recovered, or environmentally preferable materials 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 Design and construction. TOTS va
21、lves shall be of the types, body styles, seat styles, and sizes specified (see 1.2 and 6.2). The stem, disc, and seat shall have a double offset design. The third offset shall be achieved by inclining the seat and seal cone centerline with respect to the pipe and valve centerline in order to elimina
22、te rubbing during 90 degrees of operation. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32307 8 3.3.1 Valve body. The dimensions of Type I and Type II valve bodies shall be in accordance with the requirements specified in ASME B16.34 for C
23、lass 150 valves. The minimum wall thicknesses for Type I and Type II valves shall be calculated in accordance with the basis equations for minimum wall thickness table of ASME B16.34 for Class 150 valves. Note that the design criteria specified in ASME B16.34 applies only to ferrous materials and mu
24、st be modified to consider the stress limits for non-ferrous materials prior to use in the design of Type I (non-ferrous) valves. Valves shall be designed for installation between flanges in accordance with ASME B16.5 Class 150 for ferrous (Type II) valves and Drawing 810-1385892 for non-ferrous (Ty
25、pe I) valves. Wafer and lugged valves shall be manufactured with face-to-face dimensions in accordance with table III. TABLE III. Valve face-to-face dimensions. NPS (inches) High performance butterfly equivalent MIL-V-24624 replacements (0.0625 inches) Rubber-lined butterfly equivalent MIL-V-22133 r
26、eplacements (0.0625 inches) 2.5 1.875 1.625 3 1.87 1.623.5 2.0 1.75 4 2.125 1.875 5 2.25 2.0 6 2.25 2.8 2.5 2.375 10 2.8125 2.563 12 3.1875 2.875 3.3.2 Actuator mounting bracket. The valve body shall have an integral provision for mounting the manual operator or motor actuator. An adaptive mounting
27、bracket may be utilized to attach the actuator, provided it is approved by Naval Sea Systems Command and the entire assembly, valve, mounting bracket, and actuator, is successfully shock tested and vibration tested as specified (see 3.5.4 and 3.5.5). Acquisition documentation for valve assemblies (s
28、ee 6.2) shall identify requirements for mounting actuators including bolting size and pattern. 3.3.3 Valve seats. The valve seat shall be integral to, or removable from the valve body. 3.3.4 Disc. The seal ring assembly on the disc shall be replaceable without removing the stem and disc assembly. 3.
29、3.5 Stem. The stem shall be of one-piece construction. The shaft shall be designed so that the failure of the shaft-to-disc connection or internal failure of the shaft shall not permit any portion of the shaft to be ejected from the valve as a result of internal pressure. The shaft seals shall be ca
30、pable of being tightened while the valve is under pressure. The valve packing shall be made of a combination of die-formed and expanded PTFE or graphite and braided PTFE or graphite rings (see table I), or other sealing arrangement proven to be equivalent or better. Burden of proof of equivalency sh
31、all fall on the contractor and be submitted to Naval Sea Systems Command for approval (see 6.2). 3.3.6 Position indication. The indication of the position of the disc shall be integral with the valve shaft. The design shall ensure that the valve (and/or operator) cannot be assembled to falsely indic
32、ate the valves open and closed position. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32307 9 3.3.7 Actuators. Enclosed worm gear type manual actuators shall be available for all size valves. The maximum allowable tangential force, based o
33、n hand-wheel size, is provided in table IV. This force applied to the manual actuator shall meet or exceed the maximum torque required to close and open the valve. TABLE IV. Maximum tangential hand-wheel force. Hand-wheel diameter (inches) Total tangential force (rim of hand-wheel) (lbs) 2.5 30 3 30
34、 3.5 30 4 30 5 50 6 72 8 102 10 120 12 135 3.4 Physical requirements. 3.4.1 Pressure-temperature ratings. The pressure-temperature rating for TOTS Type I valves shall be calculated in accordance with the non-mandatory method for Class 150 all materials appendix of ASME B16.34. The pressure-temperatu
35、re rating for TOTS Type II valves shall be in accordance with the “Ratings for Group 2.2 Materials” table in ASME B16.34 for Class 150, Standard Class valves. Both Type I and Type II TOTS valves shall be rated at 100 F. 3.4.2 Seat tightness. TOTS valves shall meet the resilient seat leakage criteria
36、 as specified in API-STD-598 (see 4.5.9). 3.4.3 TOTS valve body marking. The following markings shall be permanently marked on the valve body: a. Manufacturer name b. Model number c. Valve size in NPS d. Valve pressure rating in psig 3.4.4 Identification plate. TOTS valves shall be provided with a p
37、ermanently attached plate containing the following data: a. Manufacturer name b. Size of valve in NPS and pressure rating in psig c. Body material d. Valve trim material: stem, disc, seat e. Contractor and Government Entity (CAGE) number f. Component identification number (if known) Provided by IHSN
38、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32307 10 3.5 Performance requirements. 3.5.1 Flow capacity. The minimum flow capacity shall be in accordance with table V. TABLE V. Minimum flow coefficient (Cv). NPS (inches) Rated Cv* 2 43 3 85 3 114 4 180 5
39、371 6 732 8 1,4710 2,480 12 3,79* - Disc side direction flow coefficient 3.5.2 Valve operation. TOTS valves shall be capable of fully opening from the fully closed position in 35 seconds, or less. TOTS valves shall also be capable of fully closing from the fully open position in 35 seconds, or less.
40、 Regardless of actuation method, TOTS valves shall operate under the pressure conditions and operating torque values listed in table VI. TABLE VI. Maximum operating torque values. NPS (inches) Running (in-lb) Pressure direction* Max allowable to close (in-lb at 275 psig P) Max allowable to open (in-
41、lb at 275 psig P) SS 677 1120 2 320 DS 677 1120SS 1049 1720 3 363 DS 1049 1720SS 1421 2320 3 400 DS 1421 2320SS 1793 2940 4 451 DS 1793 2940SS 3134 6162 5 584 DS 3134 6162SS 3492 6880 6 451 DS 3492 6880SS 4833 9534 8 885 DS 4833 9534SS 8961 17614 10 1354 DS 8961 17614SS 13023 25626 12 1850 DS 13023
42、25626 *SS: Shaft Side Flow Direction *DS: Disc Side Flow Direction 3.5.3 Fire resistance. TOTS valves, with actuators installed, shall be fire resistant and shall meet the allowable through valve and external leakage rate acceptance criteria when tested in accordance with API-STD-607 (see 4.5.3). Pr
43、ovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32307 11 3.5.4 Shock resistance. Valves and their actuators shall meet the Grade A shock acceptance requirements of MIL-S-901 when tested as specified in 4.5.4. 3.5.5 Vibration resistance. Valves
44、and their actuators shall meet the Type I vibration requirements of MIL-STD-167-1 when tested as specified in 4.5.5. 3.5.6 Service life. TOTS valves shall be designed for a minimum service life of 30 years as demonstrated by acceptable leakage rates after 20,000 cycles (see 4.5.2). 4. VERIFICATION 4
45、.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. Qualification inspection (see 4.2). b. Conformance inspection (see 4.3). 4.2 Qualification inspection. Qualification inspection shall include the examination of 4.4 and the tests of 4.5.1 thr
46、ough 4.5.10 (see table VII) of the 4-inch, 8-inch, and 12-inch TOTS valves to qualify the TOTS valve sizes listed in 1.2.4. The 4-inch, 8-inch, and 12-inch sizes shall be used in lieu of the valve sizes specified in MIL-STD-798. 4.2.1 Extension of qualification. Tests conducted on automated valves,
47、consisting of a valve and actuator combination, shall be extended to qualify the same actuator when installed on larger size valves. Successful passages of these tests for any body style wafer valve shall be extended to cover any body style lugged or wafer valve. Successful passage of these tests fo
48、r long, double flanged design shall be extended to qualify short, double flanged design. 4.3 Conformance inspection. Conformance inspection shall include the examination of 4.4 and the tests of 4.5.7, 4.5.8, and 4.5.9 (see table VII). TABLE VII. Examinations and inspections. Test requirement Require
49、ment Verification Qualification Conformance Examination 3.1 through 3.3.7,3.4.3, and 3.4.4 4.4 X X Cycle tests 3.5.2 and 3.5.6 4.5.2 X Fire test 3.5.3 4.5.3 X Shock test 3.5.4 4.5.4 X Vibration test 3.5.5 4.5.5 X Flow capacity test 3.5.1 4.5.6 X Functional check 3.5.2 4.5.7 X X Hydrostatic shell test 3.4.1 4.5.8 X X Seat tightness test 3.4.2 4.5.9 X X Detrimental materials 3.2.1 4.5.10 X 4.
