NAVY MIL-DTL-19772 B-1996 VALVES TEMPERATURE REGULATING AUTOMATIC NAVAL SHIPBOARD《海军军舰上用自动温度调解阀门》.pdf

1、DETAIL MIL-DTL-l9772B(SH) O9 February 1996 SUPERSEDING 3 September 1968 (See 6.12) MIL-V-9772A(SHIPS) SPECIFICATION VALVES, TEMPERATURE REGULATING, AUTOMATIC, NAVAL SHIPBOARD This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, and is available for use by

2、all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 ScoDe. This specification covers automatic temperature regulating valves for steam, water, and other fluid service where accurate temperature control of fluid is required. These valves are of the self-operated type requiring no

3、external power supply such as oil, water, steam, electricity, or compressed gas for their operation. However, when the fail safe mode is required (see 6.2) , it can be externally powered. 1.2 Classification. Automatic temperature regulating valves are of the following types, classes, and series as s

4、pecified (see 6.2) : Type I - Direct operated 3-way valves - series 100, 150. Type II - Direct operated 2-way valves. Class 1 - Direct acting (heating service) - series 100, 150. Class 2 - Reverse acting (cooling service) - series 100, 150, 250, 700. Type III - Pilot operated 2-way valves. Class 1 -

5、 Direct acting (heating service) - series 100, 150, Class 2 - Reverse acting (cooling service) - series 100, 150, 400, 600. 400, 600. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, N

6、aval Sea Systems Command, SEA 03R42, Department of the Navy, 2531 Jefferson Davis Highway, Arlington, VA 22242-5160 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 482( DISTRIBUTION STATEMENT A.

7、 Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-19772B m 9999906 2033655 907 m . MIL-DTL-19772B (SH) Type IV - Pilot operated, 2-way, combined temperature and pressure (heating service)

8、 - series 100, 150, 400, 600 - 4:l ratio and 1:l ratio. 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 cited in other sections of this specification or recommended for addition

9、al information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements documents cited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government documents. 2.

10、2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks 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 Index of Specificatio

11、ns and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6.2) . SPECIFICATIONS FEDERAL QQ-N-281 - Nickel-Copper Alloy Bar, Rod, Plate, Sheet, Strip, Wire, Forgings, and Structural and Special Shaped Sections. MILITARY MIL-S-901 - MIL-F-1183 - MIL-R-2765 - MS16142 - MIL-R-1713

12、1 - MIL-V-17848 - MIL-F-20042 - MIL-C-24707 - MIL-C-24707/1 - Shock Tests, H.I. (High Impact) Shipboard Machinery, Equipment, and Systems, Requirements for. Fittings, Pipe, Cast Bronze, Silver Brazing, General Specification for. Rubber Sheet, Strip, Extruded, and Molded Shapes, Synthetic, Oil Resist

13、ant. Boss, Gasket Seal Straight Thread Tube Fitting, Standard Dimensions for. Rods and Powders, Welding, Surfacing. Valves, Pressure-Reducing, Steam Service. Flanges, Pipe and Bulkhead, Bronze (Silver Castings, Ferrous, General Specification for. Castings, Ferrous, for Machinery and Brazing) . Struc

14、tural Applications. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-19772B (SHI STANDARDS FEDERAL FED-STD-H28 - Screw-Thread Standards for Federal Services. MILITARY MIL-STD-167-1 - Mechanical Vibrations of Shipboard Equipment (Type I - Env

15、ironmental and Type II - Internally Excited) . for. Control, Material Control and Identification and Hi-Shock Test Requirements for Piping System Components for Naval Shipboard Use. MIL-STD-271 - Testing Methods, Nondestructive, Requirement MIL-STD-798 - Nondestructive Testing, Welding, Quality (Unl

16、ess otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from the Standardization Documents Order Desk, BLDG. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawinqs, and Dublications. The following other

17、Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation. DRAWINGS NAVAL SEA SYSTEMS COMMAND (NAVSEA) NAVSHIPS 810-1385861 - Flanges, Sea Water, 700 PSI Max. (Application f

18、or copies should be addressed to the Commander, Portsmouth Naval Shipyard, Code 202.2, Portsmouth, NH 03801) (Copies of Government documents required by contractors in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting ac

19、tivity.) 2.3 Non-Government publications. The following document(s) 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 speci

20、fied, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) A 216 - Standard Specification for Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature Service. (DoD Ado

21、pted) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-19772B (SH) A 313 - Standard Specification for Stainless Steel Spring A 494 - Standard Specification for Castings, Nickel and B 61 - Standard Specification for Steam or Valve Bronze Wire

22、. (DoD adopted) Nickel Alloy. Castings . (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME) B1.12 - Class 5 Interference-Fit Thread. (DoD adopted) B16.5 - Pipe Flang

23、es and Flange Fittings. (Application for copies should be addressed to the American Society of Mechanical Engineers, 345 East 47th Street, New York, NY 10017.) (Non-Government standards and other publications are normally available from the organizations that prepare or distribute the documents. The

24、se documents also may be available in or through libraries or other informational services.) 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 document takes precedence. Nothing in this document, however, supersede

25、s applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Qualification. Automatic temperature regulating valves furnished under this specification shall be products which are authorized by the qualifying activity for listing on the applicable qualified pro

26、ducts list at the time set for contract award (see 4.2 and 6.4). 3.2 Materials. Materials shall be as specified in table I and 3.2.1 through 3.2.2. Materials shall be selected to prevent galling, seizing, or excessive wear between parts. Clearance shall be such as to prevent interference due to ther

27、mal expansion. This list of materials is not intended to be restrictive, providing it is demonstrated that proposed alternate materials are satisfactory (see 6.7). 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Name of parts Body, bonnet , and pil

28、ot body (where separate) Springs (external) MIL-DTL-19772B (SH) TABLE I. List of materials. Nonferrous (series 100 and 250) Cast bronze ASTM B61 Nonferrous (series 700) 70 Ni-30 Cu alloy per, class A or ASTM A4 94 QQ-N-281, I Carbon steel - zinc plated Ferrous (series 150, 400, and 600) Carbon steel

29、 and MIL-C-24707 MIL-C-24707/1, grade All ASTM A216, grade WCB Springs Nickel-copper alloy (UNS N04400 and N044051, (internal) chromium-nickel alloy (ASTM A3131, nickel-chromium alloy (UNS N06625 and N077501, corrosion-resisting steel (300 series) Bellows Be 1 lows (external) Brass (metallic) Phosph

30、or-bronze, nickel-copper alloy, Diaphragm (internal) Bronze, nickel-copper alloy corrosion-resistins steel (300 series) Diaphragm (nonmetallic) Gasket oil resisting MIL-R-2765 Polytetra- fluoroethylene or Fluorocarbon rubber -. 3.2.1 Internal trim. The internal trim (valve stem, seat ring and plug)

31、for ferrous valves (series 150, 400, and 600) shall be corrosion-resisting steel. Unless otherwise specified (see 6.21, the seating and flow controlling surfaces on the seat ring and disc (main valve only) shall be hardfaced (see 3.3.11). Materials used for the internal trim of nonferrous valves (se

32、ries 100 and 250) shall be as follows: For valves used in fresh water service, materials shall be bronze, corrosion-resisting steel, and nickel-copper alloy. For valves used in steam service, valve discs shall be of 400 series corrosion-resisting steel (hardened to 500 Brinell minimum) and seats sha

33、ll be hardfaced unless otherwise approved (see 6.7). Also for valves employed in steam service, plastic may be used upon 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-19772B (SH) approval (see 6.7). For valves used in sea water service, m

34、aterial shall be nickel-copper alloy. The specification for nickel-copper alloy is not intended to limit the choice to basic monel alloy, but rather is intended to permit the use of the most suitable grade of nickel-copper alloy for each particular application (for example, S-monel and K-monel would

35、 be considered to be nickel-copper alloy). The proper grades of the materials specified above, for use in both ferrous and nonferrous valves, shall be chosen to have the necessary strength, hardness, and nongalling properties to prevent distortion, galling, or excessive wear between operating parts.

36、 3.2.2 External thermal bulb. The material for the external thermal bulb shall be copper for fresh water, copper or carbon steel for lube oil service, carbon steel or corrosion-resisting steel for fuel oil service, and nickel-copper alloy for sea water service. 3.2.3 Recovered materials. Unless othe

37、rwise specified herein, all equipment, 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 m

38、aterials“ means materials which have 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 unles

39、s otherwise specifically specified. 3.3 Construction. Valve construction shall be as specified in 3.3.1 through 3.3.20 (see 6.3) . 3.3.1 Pressure-temperature ratinss. The pressure-temperature ratings shall be as specified in table II. TABLE II. Pressure-temDerature ratinss. Series 100 250 150 400 60

40、0 700 Body material Bronze Bronze Steel Steel Steel 70 Ni-30 Cu Maximum allowable pressure (lb/in2 gauge) 100 250 150 400 600 700 Maximum allowable temperature (OF) 425 150 500 775 775 150 3.3.2 End connections. End connections shall be integral with the body and as specified in table III. Union end

41、 valves shall be furnished complete with union nuts, tailpieces, retaining ring and seal ring. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-19772B (SHI TABLE III. End connections. Flanged end L/ I Union end Series Reference documents 100

42、 “ 810-1385861, Type P 700 -“- ASME B16.5 600 -“- ASME B16.5 400 “ ASME B16.5 150 MIL-F-1183 MIL-F-20042 250 MIL-F-1183 MIL-F-20042 - 1/ Flange bolting shall straddle the vertical center line. When an odd number of bolts is used, the vertical center line at the top of the flange shall be straddled.

43、3.3.2.1 Type II and type III series 100 valves and type II series 250 valves in sizes up to and including 2 inches shall be union end. Type I valves in sizes up to and including 2 inches may be union end or flanged (see 6.2). Other valves shall be flanged. The 1/4 and 3/8 inch type II valves shall b

44、e furnished with 1/2 inch end connections. 3.3.3 Accessibility. With the exception of type I valves, valves shall be accessible for adjustment, repair, or replacement of internal trim, including the thermal element, without requiring removal of the valve from the line (see 6.8) . 3.3.4 CaDillarv tub

45、inq. The capillary tubing shall be covered throughout the entire length with a flexible bronze, brass, or corrosion-resisting steel armor constructed so the armored tubing can be coiled to 6 inch diameter without plastic deformation. At the point where the tubing joins the bulb and the valve, the tu

46、bing shall be reinforced with an additional layer of armor for a distance not less than.5 inches, constructed so this section can be bent to not less than 7 inch diameter to prevent kinking or mechanical failure at this point. Once bent or coiled, the armored tubing shall hold it shape without mecha

47、nical restraint. The armor shall be smoothly finished and free from all mechanical defects. Unless otherwise specified in the contract or order, the length of the capillary tubing between the bulb and the valve body shall be 10 feet. 3.3.5 Thermal media. The media employed in the thermal element sha

48、ll have no detrimental effect on the material with which it comes in contact, and shall have no detrimental effect to personnel who may be exposed to it upon leakage or failure of the element. 3.3.6 Bellows. Bellows, where employed, shall be of a seamless type. Connections shall be hermetically seal

49、ed by interlocking and soldering, 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. d NIL-DTL-Lq772B m 9999706 20L3bbL 700 m MIL-DTL-19772B (SH) welding, or brazing. Bellows may be either single or double ply (laminated construction) . 3.3.7 Bulb. The bulb shall be either of one piece construction or shall be joined together by welding or silver brazing so that the joint is comparable