1、*A.-. t INCH-POUND MIL-P-l7639F(SH) AMENDMENT 4 22 FEBRUARY 1996 SUPERSEDING AMENDMENT 3 25 May 1995 MILITARY SPEC1 FI CATION PUMPS, CENTRIFUGAL, MISCELLANEOUS SERVICE, NAVAL SHIPBOARD USE This amendment forms a part of MIL-P-l7639F(SH), dated 18 February 1986, and is approved for use within the Nav
2、al Sea Systems Command, Department of the Navy and is available for use by all Departments and Agencies of the Department of Defense. PAGE 2 2.1.1, under “SPECIFICATION, FEDERAL“: Delete “QQ-N-288 - Nickel-Copper Alloy And Nickel-Copper-Silicon Alloy Castings“; and add “MIL-A-907 - Antiseize Thread
3、Compound, High Temperature.“ and “MIL-G-5514 - Gland Design; Packing, Hydraulic, General Requirements for.“ and add “MIL-C-24723 Castings, Nickel-Copper Alloy.“ PAGE 2 2.1.1, under “SPECIFICATION, MILITARY (Continued)“: Delete DOD-D-1000 - Drawings, Engineering and Associated Lists; and “MIL-S-15083
4、 - Steel Castings. “ PAGE 3 2.1.1, under “SPECIFICATION, MILITARY (Continued) “: Delete the “MIL-S-16993 - Steel Castings (12-Percent Chromium). following: MIL-C-20159 - Copper- Nickel Alloy Castings (UNS No. C96200 and C96400). MIL-P-24377 - Packing Material, Asbestos, Braided, Impregnated with PTF
5、E (Polytetrafluoroethylene), Surface Lubricate. * MIL-P-25732 - Packing Preformed, Petroleum Hydraulic Fluid Resistant, Limited Service at 275OF (132OC) QQ-N-288 - Nickel-Copper Alloy and Nickel-Copper-Silicon Alloy Castings QQ-N-286 - Nickel-Copper-Aluminum QQ-C-390 - Copper Alloy Castings AMSC N/A
6、 DISTRIBUTION STATEMENT A. Approved for unlimited. Page 1 Alloy, Wrought (UNS N05500) (including Cast Bars) FSC 4330 public release; distribution of 22 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-17 639F (SH) AMENDmNT 4 PAGE 3 2.1.1, under
7、”SPECIFICATIONS, FEDERAL: Add the following: “A-A-50433 - Grease, Sea Water Wash Resistant” 2.1.1, under “SPECIFICATION, MILITARY (Continued)”: Add the following: “MIL-G-24696 - Gasket, Sheet, Non-asbestos. MIL-G-22050 - Gaskets and Packing Material, Rubber, for use with Polar Fluids, Steam and Air
8、at Moderately High Temperatures. MIL-C-24707/1 - Castings, Ferrous, For Machinery and Structural Application. MIL-C-24707/6 - Casting, Ferrous, Chromium Steel, For Pressure- Containing Parts Suitable for High-Temperature Service MIL-C-24723 - Casting, Nickel-copper Alloy. MIL-T-24747 - Technical Rep
9、air Standard (TRS) Manual; Preparation Of. MIL-P-24790 - Packing Material Braided Non-Asbestos. MIL-P-83461 - Packing, Preformed, Petroleum Hydraulic Fluid Resistant, Improved Performance at 275F (135C) MIL-R-83248 - Rubber, Fluorocarbon Elastomer, High Temperature Fluid and Compression Set Resistan
10、t (O-rings Class 1, 75 Hardness) MIL-S-8660 - Silicone Compound NATO Code Number S-736 MIL-P-17416 - Packing Material, Metallic, Flexible DOD-C-24176 - Cement Epoxy, Metal Repair and Hull Smoothing (Metric) PAGE 4 * 2.1.1, under “STANDARDS, MILITARY (Continued) : Add “MIL-STD-1388/2 - DOD Requiremen
11、ts For A Logistic Support Analysis Record”; and add “MIL-STD-2035 - Nondestructive Testing Acceptance Criteria” and delete DOD-STD-2147 - Technical Repair Standards (TRS); Hull, Mechanical and Electrical (HM and packing for lube oil and diesel fuel services shall be in accordance with MIL-P-17416 (s
12、ymbol 1430).“ “3.2.9.2. Gasket compression and tolerance shall not affect bearing bushing or wearing ring fits to an extent that will adversely affect reliability or performance. Spiral wound gaskets shall be used only where use of a sheet gasket or O-ring is impractical. Internal spiral wound gaske
13、ts shall be completely enclosed at both the inner diameter and the outer diameter of the spiral elements to prevent the gasket from unwinding and entering the fluid being pumped. “ “3.2.9.3. O-ring gland design shall be in accordance with MIL-G-5514. 0- ring shall be referred to by the standard part
14、 numbers specified in AS-568 and the O-ring military specification cited below.“ 3.2.9.4. For pumps in systems to which detrimental material requirements do not apply (see 6.2.1) and pump temperatures do not exceed 275 degrees Fahrenheit (OF) of normal fluid temperature and 300F intermittent fluid t
15、emperature, O-rings shall be made of fluorocarbon rubber in accordance with MIL-R-83248. For pumps with a design temperature above 275F normal fluid temperature, the O-ring material shall be justified to the design review activity. For pumps handling seawater, the O-ring groove shall be packed with
16、grease in accordance with A-A-50433. “3.2.9.5. For pumps in systems to which detrimental material requirements apply (see 6.2.l.(mm) and the pump temperatures does not exceed 270F normal fluid temperature and 300F intermittent fluid temperatures, o- rings shall be ethylene propylene in accordance wi
17、th MIL-G-22050, grade 3 and shall be lubricated as necessary with silicon compound in accordance with MIL- S-8660. For pumps operating with higher fluid temperatures, the type of joint and, if an O-ring joint, O-ring material shall be justified to the design review activity. I PAGE 15 3.3.1.1.2: Del
18、ete “Pumps shall have constantly rising head capacity characteristic curves.“ Substitute “Pumps shall have head versus capacity characteristics wherein for all capacities from shutoff to free delivery the pump head decreases as capacity increases.“ PAGE 16 3.3.1.1.5: Delete and substitute: “3.3.1.1.
19、5 Pump casing joints shall be made up using compressed sheet gaskets, in accordance with MIL-G-24696, except circular joints which shall be sealed by O-rings as specified (see 6.2.1). O-rings may be used to seal casing joints in other applications when approved by the design review activity. 3.3.1.2
20、.1 Delete: “Pumps shall be capable of parallel operation and shall have constantly rising head capacity characteristic curves.“ Substitute “Pumps shall be capable of parallel operation and shall have head versus 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license f
21、rom IHS-,-,-MIL-P-l7639F(SH) AMENDMENT 4 capacity characteristics wherein for all capacities from shutoff to free delivery the pump head decreases as capacity increases.“ 3.3.1.2.5: Delete and substitute: “3.3.1.2.5 Pump casing joints shall be made up using compressed sheet gaskets, in accordance wi
22、th MIL-G-24696 except circular joints which shall be sealed by O-rings as specified (see 6.2.1). O-rings may be used to seal casing joints in other applications when approved by the design review activity. “ PAGE 17 3.3.3.11: Delete the word “asbestos“ in the 1st sentence. PAGE 18 Insert new Paragra
23、ph 3.3.3.15: 3.3.3.15. Ceramic Filled Polymeric Compounds. Casing volutes for fresh and salt water pumps, not excluded by 3.3.3.17 (also see paragraph 6.2.1), that are exposed to the pumped fluid, with the exception of bearing and sealing surfaces, shall be coated with no less than 8 mils of ceramic
24、 filled polymeric compounds conforming to the requirements of Type I materials (alkali resistant) in accordance with DOD-C-24176 (SH). Table VI1 provides a partial listing of products conforming to DOD-C-24176 requirements. Insert new paragraph 3.3.3.16: 3.3.3.16. Toxicology. Ceramic filled polymeri
25、c compounds shall exhibit no adverse toxicological effects on the health of personnel when used with fresh water and/or salt water applications. Tables III, IV, V, and VI contain the prescribed levels of contaminants in the fluid exposed to these ceramic filled compounds. Testing shall be done in ac
26、cordance with paragraph 4.6.8. Insert new paragraph 3.3.3.17: 3.3.3.17. Exclusions: Ceramic filled polymeric compounds shall not be used on (1) pumps with detrimental material requirements, (2) pumps in any part of the saturated-steam propulsion plant, (3) pumps related to the primary propulsion sys
27、tem, steering system, potable water system, lube oil system, diesel and JP-5 fuel systems, fresh water collecting system and/or distillate water systems of surface ships. (see paragraph 6.2.1). 3.3.5.2: Delete and substitute: “3.3.5.2 Impellers shall be keyed on the shaft and securely held against m
28、ovement by locked nuts or other means approved by the design review agency (see 6.2.1). Impellers between bearings shall be restrained in a manner similar to that shown in Figure 1A. Impellers not between bearings shall be restrained in a manner similar to that shown in Figure 1B.“ 6 Provided by IHS
29、Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-17639F (SH) AMZNDMENT 4 PAGE 19 3.3.8.1: Add at the end of the second sentence, “Pumps in which the operating conditions in the seal cavity do not exceed 150 psig or 170 degrees Fahrenheit at 3600 rpm or less sh
30、all be provided with mechanical shaft seals in accordance with ASTM F1511. For pumps in which the operating conditions fall outside of the limits set by the preceding sentence, the mechanical seal design shall be recommended by the pump manufacturer and shall be approved by the design review authori
31、ty.“ PAGE 20 3.3.8.3: Third sentence, “The packing shall be .I delete “in accordance with MIL-P-24377.“ and substitute “in accordance with 3.2.9.1“. 3.3.8.5: Add the following sentence to the end of paragraph 3.3.8.5 as follows : paragraph 6.2.1) the cavity inside the mechanical seal, in sea water p
32、umps, shall be packed with grease in accordance with A-A-50433 during assembly by the manufacturer. “ “When required by the requirements of the ordering data (see 3.3.10: Add the following at the end of the paragraph; “Copper-silicon and silicon-bronze fasteners are prohibited.“ PAGE 23 TO 25 Table
33、I. Materials (1) For applications involving Casings and Diffusers Salt Water Service, for Surface Ships under the Specification column delete MIL-C-20159 UNS C964000; under the ASTM Publication column after B 369 UNS 96400 add with S1 through S7“. (2) For applications involving Casings and Diffusers
34、 Salt Water Service, for Submarines for Copner-Nickel (70-30) diffusers under the Specification column delete MIL-C-20159 UNS C964000; under the ASTM Publication column after B 369 UNS 96400 add “with S1 through S7“. Under the Applications column add, “Surface Ships Use Only c/“ (3) For applications
35、 involving Casings and Diffusers involving Fresh Water Service for Copper-Nickel (70-30) under the Specification column delete MIL-C-20159 UNS C96400; under the ASTM Publication column after B369 UNS C96400 add “with S1 through S7“. Under the Specification column for 12% Chrome Cast Steel delete MIL
36、-S-16993 and substitute MIL-C-24707/6. Under the Applications column add, “Surface Ships Use Only z/“ 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-17639F (SEI) AMENDMENT 4 (4) For application involving Impellers for Salt Water Service add
37、a new subrow under all columns. Under Application column; add “Surface Ships Only - 20/“. Under Materials Column add; “Composite material“, under ASTM Publication column, add “See Table II“ (5) For applications involving Impellers for Fresh Water Service for Nickel Copper Alloy , under the Material
38、column, change “copper-nickel“ to “Nickel-copper“, under the Specification column, delete “QQ-N-288 Comp E“ and substitute “MIL-C-24723 Comp M30“; under the ASTM Publication column add “A494 S22 Comp M30C with S22“. Add a new subrow under all columns. Under Application column; add “Surface Ships Onl
39、y 20/“. Under Materials Column add; “Composite material“, under ASTM Publicationcolumn, add “See Table II“ (6) For application involving Casing Wearing Rings for Salt water service, Under the Materials column, delete “Ni-Cu-Mo-Cb“ and substitute “Ni- Cr-Mo-Cb“, Under the Specification column delete
40、QQ-N-288 Composition B or D“ and substitute “MIL-C-24723 M30H M25S“; under the ASTM Publication column add A494 Comp M25S with S10 and S21 or M30H“. Under Application column; add “Surface Ships Only 20/“. Under Materials Column add; “Composite material“, under ASTM Publication column, add “See Table
41、 II“ (7) For applications involving Casing Wearing Rings for fresh water service with Nickel-Copper Alloy, Under the Specification column delete QQ-N- 288 Composition B or D“ and substitute “MIL-C-24723 M30H M25S“; under the ASTM Publication column add A494 Comp M25S with S10 and S21 or M30H“. Under
42、 the Material column delete “Gun Metal“, under the Specification column delete “QQ- C-390 Alloy C90300“. Add a new subrow across all columns and under Application column; add “Surface Ships Only 20/“. Under Materials Column add; “Composite material“, under ASTM Publicationcolumn, add “See Table II“
43、(8) For applications involving Shafts in salt water service, Under the Material Column, add a new subrow and insert “Highly Alloyed Corrosion Resisting Steel“, under the ASTM Publication column, add a new subrow and insert B473 UNS 08020“ and add a second subrow for the same service and under the co
44、lumn for Materials insert “Ni-Cr-Mo-Cb“, under the column for ASTM Publication insert “ B 446 UNS 06625“. (9) For applications involving Shaft Sleeves for Salt Water Service under the Materials column delete “Ni-Cu-Mo-Cb“ and substitute “Ni-Cr-Mo-Cb“. Add a new subrow across all columns and under Ap
45、plication column; add “Surface Ships-Only 20/“. Under Materials Column add; “Composite material“, under ASTM Publicationcolumn, add “See Table II“ (10) For applications involving Shaft Sleeves for Fresh Water Service; Add a new subrow across all columns and under Application column; add “Surface Shi
46、ps Only 20/“. Under Materials Column add; “Composite material“, under ASTM Publicationcolumn, add See Table II“ (11) For applicatinns involving Bearing Brackets and caps for sea water service, under the Materials column, delete “Gun Metal“, under the Specification column delete “QQ-C-390 Alloy C9030
47、0“, under the ASTM Publication column delete “B584 Alloy 903 or 905“. For Copper Nickel (70-30) under the Specification column, delete “MIL-C-20159 C96400“, under the ASTM publication column add “B369 C96400 S1 through S7“. 8 Provided by IHSNot for ResaleNo reproduction or networking permitted witho
48、ut license from IHS-,-,-MIL-P-17639F (SH) AMENDMENT 4 (12) For applications involving Glands and Throat Bushing for sea water service under the materials column for Copper-Nickel delete “(70-30)“, under the Specification column delete “MIL-C-20159 C96400 or C96200“, under the ASTM Publication column
49、 add B369 C96400 or C96200 both with S1 through S7“. In the Nickel Copper Alloy Row under the Specification column delete “QQ-N-288“ and substitute MIL-C-24723 M30H, M25S“, under the ASTM publication column add “A494 Comp M25S with ,510 and S21, comp M30C with S22 or Comp 30“. * (13) For applications involving Gland and Throat Bushings in Fresh Water Service, under the Material column delete “Gun Metal“, under the Specification column delete “Q-C-390 Alloy C90300“. Under t
