1、Designation: F2135 01 (Reapproved 2017)1An American National StandardStandard Specification forMolded Drain, Waste, and Vent (DWV) Short-Pattern PlasticFittings1This standard is issued under the fixed designation F2135; the number immediately following the designation indicates the year oforiginal a
2、doption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1NOTEFig. X1.1 was editorially corrected in April 2017.1. Scope1.1 This specifica
3、tion covers standard fitting geometries formolded short-pattern plastic fittings intended for use in drain,waste, and vent applications.1.2 Fittings meeting the requirements of this specificationare designed for use with outside-diameter controlled pipe. Thebody inside diameter can vary significantl
4、y as the wall thick-ness and outside diameter varies, and therefore, is not suitablefor use as a fitting socket.1.3 Fittings meeting the requirements of this specificationshall be tested in accordance with the applicable requirementsof Specifications D2661 or D2665.1.4 The values stated in inch-poun
5、d units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units which are provided for informationonly and are not considered standard.1.5 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theres
6、ponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory requirements prior to use.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization establis
7、hed 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:2D2122 Test Method for Determining Dimensions of Ther-moplastic Pip
8、e and FittingsD2661 Specification for Acrylonitrile-Butadiene-Styrene(ABS) Schedule 40 Plastic Drain, Waste, and Vent Pipeand FittingsD2665 Specification for Poly(Vinyl Chloride) (PVC) PlasticDrain, Waste, and Vent Pipe and FittingsD2749 Symbols for Dimensions of Plastic Pipe FittingsF1498 Specifica
9、tion for Taper Pipe Threads 60 for Thermo-plastic Pipe and Fittings3. Requirements3.1 Short-pattern fittings shall conform to the geometries asspecified in this specification.3.2 All other dimensions shall be determined in accordancewith Test Method D2122.3.3 The exact outside shape of a short-patte
10、rn fitting isdetermined by the socket dimensions, wall thicknessrequirements, waterway, and any other critical dimensions thatmay be specified.3.4 Configurations designed as short as possible are accept-able providing that the minimum wall thickness requirementsfor the particular nominal size being
11、made is followed.3.5 All short-pattern fittings used for drainage and having a90 directional change (except vent fittings) shall have a pitchof14 in./ft or 112.3.6 All short-pattern fittings having tapered threads shallconform and be gaged in accordance with Specification F1498.3.7 45 Y-Branches:3.7
12、.1 Short-pattern 45 Y-branches shall not be pitched.3.7.1.1 When the branch of a short-pattern 45 Y is of asmaller diameter than the main body of the fitting, the internaldiameters of the fitting shall remain constant until theyintercept one another.3.8 One-Quarter Bends:3.8.1 Short-pattern one-quar
13、ter bends shall have a centerlineradius of curvature of not less than the nominal pipe size, with1This specification is under the jurisdiction of ASTM Committee F17 on PlasticPiping Systems and is the direct responsibility of Subcommittee F17.63 on DWV.Current edition approved Feb. 1, 2017. Publishe
14、d February 2017. Originallyapproved in 2001. Last previous edition approved in 2012 as F213501(2012). DOI:10.1520/F2135-01R17E01.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume informati
15、on, refer to the standards Document Summary page onthe ASTM website.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 principles on standardization e
16、stablished 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.1the exception of traps. The centerline radius of curvature shallbe measured in accordance with Sectio
17、n 4.3.9 Sanitary Tees:3.9.1 Short-pattern sanitary tees and reducing tees shallhave a centerline radius of curvature on the side branch of notless than its nominal size, when measured in accordance withSection 4. The alignment of the side branch shall be so locatedthat the smallest inside radius of
18、the side branch of the sanitarytee shall meet tangentially with, or within 5 % of, the mainbore (see Fig. 1), when measured in accordance with 4.4.5.NOTE 1Refer to Appendix X1 for geometric configurations of someof the fittings being produced. Consult the individual manufacturer forlaying lengths.4.
19、 Test Method for Determining Compliance of Short-Pattern14 Bends and Sanitary Tees4.1 Scope:4.1.1 This test method covers the determination of thecenterline radius of short-pattern14 bends and of the sidebranch of short-pattern sanitary tees. A method of determiningthe alignment of the side branch o
20、f short-pattern sanitary teesis also included.4.2 Significance and Use4.2.1 Determination of the centerline radius of curvature ofshort-pattern14 bends.4.2.2 Determination of the centerline radius of curvature ofthe side branch of short-pattern sanitary tees.4.2.3 Determination of the alignment of t
21、he side branch ofshort-pattern sanitary tees.4.3 Apparatus4.3.1 For accuracy, the following equipment shall be used:4.3.1.1 Lead pencil3H or harder lead 0.020 in. (0.5 mm),sharp.4.3.1.2 Set square, suitable size.4.3.1.3 Metal ruleaccurate to 0.020 in. (0.5 mm).4.3.1.4 Solid blade sawcapable of cutti
22、ng a fitting in halfsquarely along the mold parting line.4.3.1.5 Photocopy machinecapable of reproducing the cutsurface of the fitting to be tested.4.4 Procedure4.4.1 Cut a fitting in half squarely along the mold partingline using a solid blade saw.4.4.2 Place the metal rule next to the specimen to
23、bephotocopied. Make a photocopy of each half of the specimen.(Ensure that the outline is clearly defined. White correctionfluid or equivalent may be used.)4.4.3 Compare the metal rule to its photocopy. The photo-copy shall not be enlarged or reduced.4.4.4 Find the centerline radius of curvature for
24、each half ofthe fitting as follows (see Fig. 1).4.4.4.1 Locate points a, b, and c on the curved line formingthe inside of the fitting, as shown in Fig. 1. Points a and c areplaced at the extremities of the curve, while point b is placedapproximately midway between a and c.FIG. 1 Measurement for Cent
25、erline Radius of Curvature and Branch AlignmentF2135 01 (2017)124.4.4.2 Using a compass with a radius greater than12 thelength of line ab, draw two intersecting arcs with their centerat a and b, locating points d and e.4.4.4.3 Draw the bisector by passing a line through the twointersecting points of
26、 the arcs (points d and e).4.4.4.4 Using c as center, in a similar manner, bisect the linebc with a line passing through the two intersecting points of thearcs (points f and g).4.4.4.5 The point where the two bisectors intersect, at pointO, is the center point of the inner arc of the side branch.4.4
27、.4.6 Extend the inner arc at point h and the inner arc atpoint i, using point O as center.4.4.4.7 Draw a line through point O and point i crossing thetwo arcs at points i and j.4.4.4.8 Bisect the line ij in the manner described in 4.4.4.2and 4.4.4.3, finding point k. Line Ok is the centerline radius
28、 ofcurvature.4.4.4.9 Measure and record the length of line Ok.4.4.5 Determine the side branch misalignment (C/D Ratio)of a sanitary tee as follows (see Fig. 1).4.4.5.1 After finding point O using the method in 4.4.4.4using a set square, draw a line through point O at 90 to themain bore of the body,
29、forming line On.4.4.5.2 Extend the arc Oi from point i until it crosses line Onat point m.4.4.5.3 Extend the inside waterway of the main bore frompoint i until it crosses line On at point p.4.4.5.4 Measure and record the length of line mp, which isfactor C of the ratio.4.4.5.5 Measure and record the
30、 length of line np, which isfactor D of the ratio.4.5 Calculation and Interpretation of Results4.5.1 Calculate the centerline radius of curvature (the lengthof line Ok) for the short-pattern14 bend, sanitary tee orreducing sanitary tee by averaging the centerline radius ofcurvature for each half of
31、the fitting.4.5.2 Calculate the percent of misalignment of the sidebranch of a short-pattern sanitary tee by dividing the misalign-ment C (the length of line mp) by the diameter of the main boreD (the length of line np). Multiply by 100, then average theresults of both halves of the fitting.4.5.3 If
32、 the result in 4.5.2 exceeds 5 %, the measuringprocedure shall be repeated four additional times using thesame fitting sample. If any of these four results exceed 7 %, thefitting shall not be acceptable.4.6 Precision and Bias34.6.1 The percent of misalignment of the side branch (C/Dratio) of a short
33、-pattern sanitary tee is a measurement consist-ing of the average of the two values determined for the halvesof one fitting and has been found to have a potential error of62 % when using the method described in Section 4.5. Keywords5.1 DWV; fittings; plastic; Schedule 40; thermoplasticAPPENDIX(Nonma
34、ndatory Information)X1. CONFIGURATIONSX1.1 The following fittings, descriptions, and terms arecommonly used in the plastic Drain, Waste, and Vent pipingindustry. However, these illustrations may not exhibit all theconfigurations produced. Therefore, consult the individualmanufacturer as to sizes and
35、 laying-length dimensions (seeSymbols D2749).NOTE X1.1Some fitting configurations may be made with threadedhubs or spigot connections.3Supporting data have been filed at ASTM International Headquarters and maybe obtained by requesting Research Report RR:F17-1047.FIG. X1.1 BendsF2135 01 (2017)13FIG. X1.2 Single 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:/ 01 (2017)16
