1、Comments, suggestions, or questions on this document should be addressed to Commander, Naval Air Systems Command, Fuels and Lubricants Division (AIR 4.4.5), Building 2360, 22229 Elmer Road, Patuxent River, MD 20670-1534 or emailed to Douglas.Mearnsnavy.mil. Since contact information can change, you
2、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 4330 MIL-PRF-32148(NAVY) 25 July 2005 SUPERSEDING MIL-PRF-15618G(IN PART) 7 January 2002 PERFORMANCE SPECIFICATION FILTER SEPARATOR ELEMENTS, FLUID, PRESSURE, AVIAT
3、ION AND DISTILLATE FUEL, NAVAL SHIPBOARD This specification is approved for use by the Department of the Navy and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. The specification covers filter-separator elements for aviation and distillate fuel
4、 for use in shipboard systems in conjunction with MIL-PRF-15618 (see 6.7). The filter-separator elements described in this specification are intended for use onboard Naval ships to remove solids and water from fuel systems. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section ar
5、e 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 additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautione
6、d that they must meet all specified requirements of documents cited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications and standards. The following specifications and standards form a part of this document to the extent specified
7、 herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. INCH-POUNDProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32148(NAVY) 2 DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-DTL-5624 - Tu
8、rbine Fuel, Aviation, Grades JP-4 and JP-5 MIL-PRF-16884 - Fuel, Naval Distillate MIL-PRF-25017 - Inhibitor, Corrosion/Lubricity Improver, Fuel Soluble MIL-DTL-85470 - Inhibitor, Icing, Fuel System, High Flash, NATO Code Number S-1745 (Copies of these documents are available online at http:/assist.d
9、aps.dla.mil/quicksearch/ or http:/assist.daps.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise
10、 specified, the issues of these documents are those cited in the solicitation or contract. AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) INTERNATIONAL ASTM-D910 - Aviation Gasolines, Standard Specification for. (DoD Adopted) ASTM-D1331 - Surface and Interfacial Tension of Solutions of Surface-Ac
11、tive Agents, Standard Test Methods for. ASTM-D1655 - Aviation Turbine Fuels, Standard Specification for. (DoD Adopted) ASTM-D2276 - Particulate Contaminant in Aviation Fuel by Line Sampling, Standard Test Method for. (DoD Adopted) ASTM-D3240 - Undissolved Water in Aviation Turbine Fuels, Standard Te
12、st Method for. (DoD Adopted) ASTM-D3948 - Determining Water Separation Characteristics of Aviation Turbine Fuels by Portable Separometer, Standard Test Method for. (DoD Adopted) ASTM-D5006 - Measurement of Fuel System Icing Inhibitors (Ether Type) in Aviation Fuels, Standard Test Method for. (DoD Ad
13、opted) (Copies of these documents are available from the American Society for Testing and Materials International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959; (610) 832-9500; or through their website at http:/www.astm.org.) 2.4 Order of precedence. In the event of a conflict between the
14、 text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. Provided by IHSNot for ResaleNo reproduction or networking permitted withou
15、t license from IHS-,-,-MIL-PRF-32148(NAVY) 3 3. REQUIREMENTS 3.1 Qualification. Elements furnished under this specification shall be products that are authorized by the qualifying activity for listing on the qualified products list before contract award (see 4.2 and 6.3). 3.1.1 Retention of qualific
16、ation. Elements authorized for listing on QPL-32148 shall be qualified for a maximum period of five years from date of approval. When the 5-year qualification period has expired, requalification of the elements to the requirements of this specification is required or the elements shall be deleted fr
17、om QPL-32148 (see 6.3.1). 3.2 Materials. Coalescer elements and separator elements (see 6.4.2 and 6.4.5) shall be manufactured from commercial type materials. Paper is prohibited in the construction of separator elements. 3.3. Compatibility. Materials used in shipboard coalescer elements and separat
18、or elements shall not be adversely affected by and shall have no effect on fuels and inhibitors conforming to MIL-DTL-5624, MIL-PRF-16884, MIL-DTL-85470, ASTM-D910, and ASTM-D1655. Compatibility with additional fuels and inhibitors shall be as specified in the contract (see 6.2). 3.4 Standardized el
19、ements. Coalescer elements and separator elements shall be of the sizes and configurations specified in table I. 3.4.1 Standardized test housings. Each type of filter separator shall meet the flow rate with the standard test housings specified in a and b. a. 24 inches long by 3.75 inches Outer Diame
20、ter (O.D.) coalescer single element test (SET) housing. The SET housing for the 24 inches long by 3.75 inches O.D. element shall be the standard Navy SET housing, Velcon Filters, Inc. part number VV1033150NVY or equivalent as approved the qualifying activity (see 6.8). The SET housing utilizes two 2
21、0 inches long by 3.75 inches O.D coalescer elements and one 24 inches long by 4.25 inches O.D. separator. The total flow rate shall be 35 gallons per minute (gal/min). The housing is available on loan from NAVAIR 4.4.5 (see 6.9). b. 20 inches long by 6 inches O.D. coalescer single element test housi
22、ng. The SET housing for the 20 inches long by 6 inches O.D. element shall be the standard Navy SET housing, Aircraft Appliances and Equipment, LTD part number 740994 or equivalent as approved the qualifying activity (see 6.8). The SET housing utilizes one 20 inches by 6 inches O.D. coalescer element
23、 and one 7.7 inches by 6 inches O.D. separator. The total flow rate shall be 45.5 gal/min. The housing is available on loan from NAVAIR 4.4.5 (see 6.9). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32148(NAVY) 4 TABLE I. Standardized eleme
24、nts. Element Type Flow Direction Length Inches (mm) O. D. (maximum) Inches (mm) I. D. (minimum) Inches (mm) JP-5 GPM Flow Rating 3/ (maximum) (LPM) 4/ Distillate GPM Flow Rating 3/ (maximum) (LPM) 4/ Coalescer In/Out 24.0 0.03 (610 0.76) 3.75 (95) 1.33 (34) 21 (80) 7 (26) Separator Out/In 24.0 0.03
25、(610 0.76) 4.25 (108) 1.33 (34) 35 (133) 12 (45) Coalescer 1/In/Out 20.0 0.06 (508 1.5) 3.75 (95) 1.33 (34) 17.5 (66) 6 (23) Separator 2/Out/In 17.5 0.03 (445 0.76) 4.25 (108) 1.33 (34) 26 (99) 9 (34) CoalescerIn/Out 20.1 0.05 (508 1.3) 6 (152) 3.5 (89) 45.5 (172) 15 (56.8) SeparatorOut/In 20.1 0.05
26、 (508 1.3) 6 (152) 3.5 (89) 133 (503) 44.3 (168) 1/ For use in qualifying and in existing filter separators only. Shall not be used in procurements of new filter separator vessels. 2/ For use in existing filter separators only. Shall not be used in procurements of new filter separator vessels. 3/ Ga
27、llons per minute 4/ Liters per minute 3.5 Marking. Each element shall be permanently marked with the following information: a. Manufacturer name and part number b. Contract or order number c. Lot number d. National Stock Number (NSN) e. Date of manufacture f. Direction of flow (inside/out, outside/i
28、n) 3.5.1 Workmanship. The elements shall be free of burrs and sharp edges. They shall be uniform in quality and shall be free from irregularities or defects that could adversely affect performance or durability. Provided by IHSNot for ResaleNo reproduction or networking permitted without license fro
29、m IHS-,-,-MIL-PRF-32148(NAVY) 5 3.6 Operating requirements. 3.6.1 Differential pressure and fiber migration. The differential pressure across the element (see 6.4.3), in combination with the separator stage, using clean dry fuel (see 6.4.1), shall not exceed 6 pounds per square inch (psi)(42 kilopas
30、cals (kPa) at 100 percent rated flow. The effluent fuel sample shall contain an average of not more than 10 fibers per liter and the number of fibers in any single sample shall be not greater than 15 fibers per liter (see 6.4.4). The method contained in Appendix B shall be used to determine the tota
31、l fibers. The element shall withstand a differential pressure across the element of not less than 75 psi (520 kPa) without structural failure, bypassing, pinhole leaks, or permanent deformation for a period of 5 minutes. 3.6.2 Contaminant removal. The element in combination with the separator stage
32、shall remove solids and water up to 3.0 percent by volume at fuel rates up to 100 percent rated flow. The average weight of solids in the effluent fuel samples shall be not greater than 0.26 milligrams per liter (mg/L), and the weight of solids in any single sample shall be not greater than 0.5 mg/L
33、 when measured in accordance with ASTM-D2276. The effluent fuel samples shall contain not more than 10 parts per million by volume (ppmv) of undissolved water when measured in accordance with ASTM-D3240. 3.6.3 Solids removal capacity. The element shall remove and retain a quantity of solids at least
34、 equal to 5.4 grams per gal/min of its rated flow capacity. The differential pressure across the element at rated flow shall be not greater than 15 psi (105 kPa) before 50 minutes, and 45 psi (315 kPa) before 75 minutes at a solids concentration in the influent test fuel of 72 mg/gal (19 mg/L). 3.7
35、Environmental requirements. 3.7.1 Transit drop. Each packaged element (see 5.1) shall withstand the shock of being dropped on a flat surface of solid concrete, from a height of 60 inches, by showing no evidence of cracks or deformation of the end caps, flanges, or damage to element media. 3.7.2 Temp
36、erature resistance. 3.7.2.1 High temperature. Each packaged element (see 5.1) shall show no evidence of swelling, corrosion, separation of components, dissolving of adhesives, or deformation which could cause failure during operation when stored at temperature of 160 5 F (71 3 C) (see 4.6.4.2). The
37、element also shall permit rated flow in an ambient temperature of 125 5 F (52 3 C). 3.7.2.2 Low temperature. Each packaged element (see 5.1) shall show no evidence of swelling, corrosion, separation of components, dissolving of adhesives, or deformation which could cause failure during operation whe
38、n stored at a temperature of -50 5 F (-46 3 C) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32148(NAVY) 6 (see 4.6.4.3). The element also shall permit rated flow in an ambient temperature of -25 5 F (-32 3 C). 3.7.3 Fuel and salt water imm
39、ersion. The elements, after being immersed in storage for 24 hours at both the high and low operating temperature limits specified in 3.7.2, shall be removed from their packaging and immersed in ambient fuel having a temperature of 70 10 F (21 6 C) for 100 hours. After 100 hours of fuel immersion, t
40、he elements shall be immersed in salt water at a temperature of 70 10 F (21 6 C) for 72 hours. After each immersion, the elements shall show no evidence of swelling, corrosion, separation of components, dissolving of adhesives, or deformation, which could cause failure during operation (see 4.6.4.4)
41、. 3.7.4 Post environmental testing. After the elements have met the requirements of 3.7.2.1, 3.7.2.2 and 3.7.3, the elements shall also meet the requirements of 3.6, 3.6.1, 3.6.2 and 3.6.3 when tested as specified in 4.6.4.5. 4. VERIFICATION 4.1 Classification of inspections. The inspection requirem
42、ents specified herein are classified as follows: a. Qualification inspection (see 4.2) b. Conformance inspection (see 4.3) 4.2 Qualification inspection. 4.2.1 Coalescer element qualification. Qualification of coalescer elements shall consist of all examinations and tests of this specification. 4.2.2
43、 Separator element qualification. Separator elements may be qualified separately to this specification. Qualification of the separator elements shall consist of all examinations and tests of this specification. Separator elements environmental tests 4.6.4 through 4.6.4.5 shall be conducted using a c
44、oalescer listed on QPL-32148. 4.3 Conformance inspection. Conformance inspection shall consist of the inspections and examinations specified in 4.4 and 4.6.1. 4.4 Inspections. All elements shall be checked visually and dimensionally for conformance to 3.4 and table I. Additionally, the separator-ele
45、ment screen shall be visually examined to ensure that it is completely fused and uniform, free from mud-cracks, craters, pinholes, sags, runs, heavy edges, wrinkles, beads, tears, blisters, incomplete coverage, and other surface imperfections. Mud-cracks and pinholes, which penetrate the coating thi
46、ckness or any other discontinuity visible at 32X magnification, shall be cause for rejection. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-32148(NAVY) 7 4.5 Test Conditions. 4.5.1 Equipment. Equipment used for testing shall be of laborator
47、y precision type or equivalent insofar as practicable, and shall be calibrated at intervals properly spaced to ensure laboratory accuracy. Figure 1 is a general schematic of the test system. 4.5.1.1 Water injection system. A system shall be provided to inject water into the fuel before the main pump
48、 in accordance with the volumes specified in 4.6.3.4 and 4.6.3.5. The accuracy of the water injection system shall be within five percent of the specified water addition rate. 4.5.1.2 Main circulation pump. The main circulating pump(s) shall be a centrifugal or vane pump capable of emulsifying the f
49、uel and water mixture. A minimum pump speed of 2950 revolutions per minute (rpm) shall be maintained to ensure consistent emulsification. 4.5.1.3 Solids addition system. A continuous solids addition system shall be provided to uniformly feed test dust (see 4.5.3) downstream of main circulating pump at a rate of 72 mg/gal (19 mg/L) into the fuel upstream of the test unit. 4.5.1.4 Sampling devices. Upstream-
