1、Designation: F986 86 (Reapproved 2018)1An American National StandardStandard Specification forSuction Strainer Boxes1This standard is issued under the fixed designation F986; the number immediately following the designation indicates the year of originaladoption or, in the case of revision, the year
2、 of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon () indicates an editorial change since the last revision or reapproval.1NOTEThe Keywords section was added editorially in September 2018.1. Scope1.1 This specification covers the design, materials, and
3、construction of strainer boxes for use in shipsbilges and othersuch tank locations that require trash protection for suctionpipes and pumps.1.2 This specification covers pipe sizes from NPS 112through NPS 16 (see Note 1).NOTE 1The dimensionless designator NPS (nominal pipe size) hasbeen substituted
4、in this specification for such traditional terms as “nominaldiameter,” “size,” and “nominal size.”1.3 The values stated in inch-pound units are to be regardedas standard. No other units of measurement are included in thisstandard.1.4 This international standard was developed in accor-dance with inte
5、rnationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2A36/
6、A36M Specification for Carbon Structural SteelA123/A123M Specification for Zinc (Hot-Dip Galvanized)Coatings on Iron and Steel ProductsF593 Specification for Stainless Steel Bolts, Hex CapScrews, and StudsF594 Specification for Stainless Steel NutsF708 Practice for Design and Installation of Rigid P
7、ipeHangers2.2 AWS Standard:3AWS D1.3 Structural Welding CodeSheet Steel3. Classification3.1 This specification covers two types of strainer boxes.3.1.1 Type 1Strainer boxes with pipe clamp centered onthe top of the strainer box (see Fig. 1).3.1.2 Type 2Strainer boxes with the pipe clamp off centerin
8、 the top of the strainer box (see Fig. 2).4. Ordering Information4.1 Ordering information required is as follows.4.1.1 ASTM specification and year of issue.4.1.2 Type.4.1.3 Size (suction pipe NPS).4.1.4 Dimensions G and H (Type 2 only).4.1.5 Number of each type and size.5. Materials and Manufacture5
9、.1 For information on materials, see Table 1.5.2 Welding shall be in accordance with AWS D1.3.5.3 Perforated sheet metal shall have38-in. diameter holeson staggered12-in. centers, 51 % open area.6. Dimensions and Tolerances6.1 Tolerance6116 in.6.2 Strainer Box Dimensions:6.2.1 Type 1See Table 2.6.2.
10、2 Type 2See Table 3.7. Workmanship, Finish, and Appearance7.1 Strainer boxes shall be hot galvanized in accordancewith Specification A123/A123M after fabrication. The galva-nizing shall be a minimum of 2 mils thick.7.2 Strainer boxes shall be free of defects, burrs, and sharpedges.1This specificatio
11、n is under the jurisdiction of ASTM Committee F25 on Shipsand Marine Technology and is the direct responsibility of Subcommittee F25.11 onMachinery and Piping Systems.Current edition approved Sept. 1, 2018. Published October 2018. Originallyapproved in 1986. Last previous edition approved in 2014 as
12、 F986 86 (2014).DOI: 10.1520/F0986-86R18E01.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from A
13、merican Welding Society (AWS), 8669 NW 36 St., #130,Miami, FL 33166-6672, http:/www.aws.org.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized princip
14、les on standardization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.18. Installation8.1 Strainer boxes are normally installed on suction pipes inb
15、allast and bilge spaces.8.2 Minimum suction pipe or tank bottom clearances areindicated in Column “F” in Table 2 and Table 3. Dimensioncallout is based on12 the tailpipe nominal pipe size.8.3 Tank structure and sloping bottom structure may ob-scure the above clearance down to the limit of the result
16、ingperiphery clear area, being 1.5 the inside diameter of thetailpipe. Structure outside the limit of12 the pipe NPS need notbe considered as obstructing flow.9. Keywords9.1 bilge; construction; design; pumps; strainer boxes; suc-tion pipesNOTE 1Tab location to suit perforated holes.FIG. 1 Type 1Ele
17、vation Strainer BoxF986 86 (2018)12FIG. 2 Type 2Elevation Rectangular StrainerTABLE 1 Parts ListItem Number Description1 SideSheet metal, 11 gage, perforated38-in. diameter holes staggered on12-in. centers, carbon steel,Specification A36/A36M.2 TopSheet metal, 11 gage, perforated38-in. diameter hole
18、s staggered on12-in. centers, carbon steel, Specifica-tion A36/A36M.3 TabFlatbar,14 in. thick by 1 in. wide by 2 in. long, carbon steel, Specification A36/A36M or ABS Grade A.4 ScrewTapping, plain hexagon washer head14 nominal size by34 in. long, Type 316 stainless steel, SpecificationF593.5 ClampSp
19、lit cap, Practice F708 Fig. 1a, without standoff.6 BoltHexagon head, stainless steel, Type 316, Specification F593. Size in accordance with Practice F708.7 NutHexagon heavy, stainless steel, Type 316, Specification F594. Size in accordance with Practice F708.F986 86 (2018)13TABLE 2 Type 1 Strainer D
20、imensionsFlat Surface InstallationSuctionPipeNPSABC D E FAWeight,lbStrainerSideWidth,in.StrainerLength,in.StrainerHeight,in.HoleDiameter,in.TabLocation,in.PipeClearance,in.112 88611516 334 7.32886 2716 317.5212151614 8.431414 391612 14.341 6 4916 3 2 14.952020 558 3212 22.862 61116 3 3 25.5826 68111
21、6 4 4 40.210 32 32 10 101316 5 5 61.312 38 38 12 121316 6 6 83.414 42 42 14 14116 4 and 10 7 106.216 48 48 16 16116 5 and 11 8 134.8ASee 8.2 and 8.3 of this specification.TABLE 3 Type 2 Strainer DimensionsSuction Pipe(NPS)AABACDEFGBHWidth,min,in.Length,min,in.Perimeter,min, in.AHeight,in.Hole Diamet
22、er,in.Tab Location,in.PipeClearance,in.Side Width,min, in.Side Length,min, in.112 278 434 20 6 11516 334 1716 2382338 618 25 6 2716 311116 3116212 378 678 31 6 2151614 11516 37163438 734 38 6 391612 2316 3784538 938 49 6 4916 321116 411165612 101516 62 6 55812 314 5126 8 12 74 6 61116 33 68101412 99
23、 8 81116 44571410 1214 1658 123 10 101316 55618 851612 1414 1938 147 12 121316 66718 9111614 1538 2058 162 14 14116 4 and 10 7 71116 1051616 1738 2258 184 16 16116 5 and 11 8 81116 11516AMinimum dimensions A and B are independent of one another and relate only to required clearances for the clamp as
24、sembly and suction requirements. The totalminimum perimeter for the box is shown in the undesignated fourth column.BSee 8.2 and 8.3 of this specification.F986 86 (2018)14ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin
25、 this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and mus
26、t be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of the
27、responsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700
28、, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 86 (2018)15
