1、Designation: F 2135 01 (Reapproved 2007)An American National StandardStandard Specification forMolded Drain, Waste, and Vent (DWV) Short-Pattern PlasticFittings1This standard is issued under the fixed designation F 2135; the number immediately following the designation indicates the year oforiginal
2、adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers standard fitting geometries formolded sho
3、rt-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 significantly as the wall thick-ness and outside diameter varies,
4、 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 D 2661 or D 2665.1.4 The values stated in inch-pound units are to be regardedas standard. The values g
5、iven 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 theresponsibility of the user of this standard to establi
6、sh appro-priate safety and health practices and determine the applica-bility of regulatory requirements prior to use.2. Referenced Documents2.1 ASTM Standards:2D 2122 Test Method for Determining Dimensions of Ther-moplastic Pipe and FittingsD 2661 Specification for Acrylonitrile-Butadiene-Styrene(AB
7、S) Schedule 40 Plastic Drain, Waste, and Vent Pipeand FittingsD 2665 Specification for Poly(Vinyl Chloride) (PVC) Plas-tic Drain, Waste, and Vent Pipe and FittingsD 2749 Symbols for Dimensions of Plastic Pipe FittingsF 1498 Specification for Taper Pipe Threads 60 for Ther-moplastic Pipe and Fittings
8、3. 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 D 2122.3.3 The exact outside shape of a short-pattern fitting isdetermined by the socket dimensions, wall thickness r
9、equire-ments, waterway, and any other critical dimensions that may bespecified.3.4 Configurations designed as short as possible are accept-able providing that the minimum wall thickness requirementsfor the particular nominal size being made is followed.3.5 All short-pattern fittings used for drainag
10、e and having a90 directional change (except vent fittings) shall have a pitchof14 in./ft or 1128.3.6 All short-pattern fittings having tapered threads shallconform and be gaged in accordance with SpecificationF 1498.3.7 45 Y-Branches:3.7.1 Short-pattern 45 Y-branches shall not be pitched.3.7.1.1 Whe
11、n 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-quarter bends shall have a centerlineradius of curvature of not les
12、s than the nominal pipe size, withthe exception of traps. The centerline radius of curvature shallbe measured in accordance with Section 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 s
13、ize, when measured in accordance withSection 4. The alignment of the side branch shall be so locatedthat the smallest inside radius of the side branch of the sanitarytee shall meet tangentially with, or within 5 % of, the mainbore (see Fig. 1), when measured in accordance with 4.4.5.1This specificat
14、ion 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 Aug. 1, 2007. Published August 2007. Originallyapproved in 2001. Last previous edition approved in 2001 as F 213501.2For referenced AST
15、M 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.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshoho
16、cken, PA 19428-2959, United States.NOTE 1Refer to Appendix X1 for geometric configurations of someof the fittings being produced. Consult the individual manufacturer forlaying lengths.4. Test Method for Determining Compliance of Short-Pattern14 Bends and Sanitary Tees4.1 Scope:4.1.1 This test method
17、 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 of short-pattern sanitary teesis also included.4.2 Significance and Use4.2.1 Determination of the centerline radius
18、 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 the side branch ofshort-pattern sanitary tees.4.3 Apparatus4.3.1 For accuracy, the following equipment shall be use
19、d: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 cutting a fitting in halfsquarely along the mold parting line.4.3.1.5 Photocopy machinecapable of reproducing the cutsu
20、rface 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 bephotocopied. Make a photocopy of each half of the specimen.(Ensure that the outline is clearly defined. White co
21、rrectionfluid 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 each half ofthe fitting as follows (see Fig. 1).4.4.4.1 Locate points a, b, and c on the curved line formingthe in
22、side 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.4.4.4.2 Using a compass with a radius greater than12 thelength of line ab, draw two intersecting arcs with their centerat a and b, locating p
23、oints d and e.4.4.4.3 Draw the bisector by passing a line through the twointersecting points of 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
24、two bisectors intersect, at pointO, is the center point of the inner arc of the side branch.4.4.4.6 Extend the inner arc at point h and the inner arc atpoint i, using point O as center.FIG. 1 Measurement for Centerline Radius of Curvature and Branch AlignmentF 2135 01 (2007)24.4.4.7 Draw a line thro
25、ugh 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 ofcurvature.4.4.4.9 Measure and record the length of line Ok.4.4.5 Determine the side branch misalignment (C/D Ra
26、tio)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, 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 insid
27、e 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 length of line np, which isfactor D of the ratio.4.5 Calculation and Interpretation of Results4.5.1 Calculate the
28、 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 the fitting.4.5.2 Calculate the percent of misalignment of the sidebranch of a short-pattern sanitary tee by divid
29、ing 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 the result in 4.5.2 exceeds 5 %, the measuringprocedure shall be repeated four additional times using thesame fit
30、ting 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-pattern sanitary tee is a measurement consist-ing of the average of the two values determined for the halvesof on
31、e 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(Nonmandatory Information)X1. CONFIGURATIONSX1.1 The following fittings, descriptions, and terms arecommonly used in the
32、 plastic Drain, Waste, and Vent pipingindustry. However, these illustrations may not exhibit all theconfigurations produced. Therefore, consult the individualmanufacturer as to sizes and laying-length dimensions (seeSymbols D 2749).NOTE X1.1Some fitting configurations may be made with threadedhubs or spigot connections.3Supporting data is available from ASTM Headquarters. Request RR:F17-1047.F 2135 01 (2007)3FIG. X1.1 BendsFIG. X1.2 Single or through the ASTM website(www.astm.org).FIG. X1.7 Cleanout TeeF 2135 01 (2007)6
