1、 The American Society of Mechanical Engineers AN AMERICAN NATIONAL STANDARD PLASTIC FITTINGS FOR CONNECTIN; WATER CLOSETS TO THE SANITARY DRAINAGE SYSTEM ASME A1 12.4.3-1 NNN Date of Issuance: September 30, 1999 This Standard will be revised when the Society approves the issuance of a new edition. T
2、here will be no addenda or written interpretations of the requirements of this Standard issued to this edition. ASME is the registered trademark of The American Society of Mechanical Engineers. This code or standard was developed under procedures accredited as meeting the criteria for American Natio
3、nal Standards. The Standards Committee that approved the code or standard was balanced to assure that individuals from competent and concerned interests have had an opportunity to participate. The proposed code or standard was made available for public review and comment that provides an opportunity
4、 for additional public input from industry, academia, regulatory agencies, and the public-at-large. ASME does not “approve,“ “rate,“ or “endorse“ any item, construction, proprietary device, or activity. ASME does not take any position with respect to the validity of any patent rights asserted in con
5、nection with any items mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable Letters Patent, nor assumes any such liability. Users of a code or standard are expressly advised that determination of the validity of
6、 any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility. Participation by federal agency representativek) or person(s) affiliated with industry is not to be interpreted as government or industry endorsement of this code or standard. ASME accepts res
7、ponsibilityfor only those interpretations issued in accordance with governing ASME procedures and policies which precludes the issuance of interpretations by individual volunteers. No part of this document may be reproduced in any form, in an electronic retrieval system or otherwise, without the pri
8、or written permission of the publisher. The American Society of Mechanical Engineers Three Park Avenue, New York, NY 10016-5990 Copyright 0 1999 by THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS All Rights Reserved Printed in U.S.A. The axiom “a chain is only as strong as its weakest link” can be appl
9、ied to the sanitary drainage system. Modem manufacturing practices, along with material, dimensional, and performance standards, have resulted in sanitary drainage systems that safely convey sanitary waste to the collection system. While major improvements have been made in the systems, materials, a
10、nd connections methods, however, a “weak link” still exists: the connection between the water closet and the sanitary drainage system. Historically, the connection has been made with “plumbers putty” and, in more recent years, a pre-formed wax-type mastic. The joint connection is on the sewer side o
11、f the water closet trap where the material and performance standards of the soil, waste, and vent system apply. However, no existing standard addresses the water closet to drain connection. Since any leak in this connection would allow sewer gas and micro-organisms to enter a building, and any leaki
12、ng waste would contaminate the surrounding area and damage floors and ceilings, there is a need for requirements to cover this joint connection. This Standard establishes the performance criteria necessary to insure a safe water and air-tight connection between the water closet and sanitary drainage
13、 system, consistent with present day plumbing material and performance standards. Suggestions for improvement of this Standard will be welcomed. They should be .sent to The American Society of Mechanical Engineers; Secretary, AI 12 Main Committee; Three Park Avenue; New York, NY 10016-5990. This rev
14、ision was approved as an American National Standard on January 28, 1999. . 111 ASME A112 COMMITTEE Standardization of Plumbing Materials and Equipment (The following is the roster of the Committee at the time of approval of this Standard.) OFFICERS P. J. Higgins, Chair S. A. Remedios, Vice Chair C.
15、J. Gomez, Secretary COMMllTEE PERSONNEL R. H. Ackroyd, Consultant J. A. Bellanco, JB Engineering Order Department: 22 Law Drive, Box 2300, Fairfield, NJ 07007-2300 ASTM A 53-97, Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless ASTM A 888-96, Specification for Hub
16、less Cast Iron Soil Pipe and Fittings for Sanitary and Storm Drain, Waste, and Vent Piping Applications ASTM B 302-97, Specification for Threadless Cop- Publisher: Cast Iron Soil Pipe Institute (CISPI), 5959 Shallowford Road, Chattanooga, TN 37421 CSA B70, Cast Iron Soil Pipe, Fittings, and Means of
17、 CSA B181.1, ABS Drain, Waste, and Vent Pipe and CSA B 181.2, PVC Drain, Waste, and Vent Pipe and CSA B602, Mechanical Couplings for Drain, Waste, Joining Pipe Fittings Pjpe Fittings and Vent Pipe and Sewer Pipe Publisher: Canadian Standards Association (CSA), 178 Rexdale Boulevard, Etobicoke (Toron
18、to), Ontario, Canada MW 1R3 2 PHYSICAL REQUIREMENTS per Pipe ASTM D 1784-97, Specification for Rigid Poly(Viny1 2.1 Size Chloride) (PVC) Compounds and Chlorinated Poly The joint (connection method, device, or fitting) shall (Vinyl Chloride) (ZPVCj Compounds accommodate aii water closets that comply
19、with the I ASME A112.4.3-1999 PLASTIC FIl-fINGS FOR CONNECTING WATER CLOSETS TO THE SANITARY DRAINAGE SYSTEM dimensional requirements set forth in ASME AI 12.19.2M and the applicable dimensional require- ments and manufacturing tolerances of the following pipe materials in weight, grade, or schedule
20、s in 3- and 4-inch nominal pipe sizes: (a) Extra heavy, service weight, and hubless cast iron soil pipe and fittings shall comply with CSA B70, ASTM A 888, or CISPI 310. (6) Schedule 40 PVC plastic pipe shall be in accord- ance with ASTM D 1785 or CSA B 181.2. (c) Schedule 40 ABS Plastic Pipe shall
21、be in accord- (d) 3.25-inch outside diameter PVC plastic drain pipe waste and vent pipe shall comply with ASTM D 2949. (e) Schedule 40 galvanized steel pipe shall comply cf) Copper tubing shall comply with ASTM B 302. ance with ASTM D 3965 or CSA B181 .I. with ASTM A 53. 2.2 Materials 2.2.1 General.
22、 The materials used in manufacturing of the joint (connection method, device, or fitting) shall be compatible with the materials with which it physically contacts and shall demonstrate, by compliance with related recognized standards or tests, its ability to function in its installed environment. 2.
23、2.2 Free From Defects. The joint (connection method, device, or fitting) shall be free from defects or features that cause leaks or cause interference with fluid or solid flows. 2.2.3 Component Material. Component material shall comply with one of the following materials. 2.2.3.1 Rigid Acrylonitrile
24、-Butadiene-Styrene (ABS) shall conform to the requirements of ASTM D 3965 cell classifications 0-0-3-2-3, 2-1-2- 1-2, or 1-0- 2-2-3. 2.2.3.2 Polyvinyl Chloride (PVC) shall conform to the requirements of PVC 1-2-4-5-4-B, 1-2-4-5-4-C, 1-1-4-4-3-B, or 1-4-3-3-3-D, as described in ASTM D 1784. 2.2.3.3 E
25、lastomeric compounds shall conform to the chemical and physical requirements specified for elastomers in ASTM D 5926 or CSA B602. 3 PERFORMANCE REQUIREMENTS 3.1 Test Setup and Preparation 3.1.1 New joints (connection method, device, or fitting) shall be used for each test. 3.1.2 Tests shall be condu
26、cted to demonstrate the ability of the connection device to seal against the intended sealing surface(s) and the dimensional toler- ances of the piping material or fitting. A joint that is designed to seal against the inside diameter of the pipe shall be tested with pipe samples that reflect the sma
27、llest inside dimensional tolerance and the largest inside dimensional tolerance allowed in the relevant material standard(s). A joint that is designed to seal against the outside diameter of the pipe shall be tested with pipe samples that reflect the smallest outside dimensional tolerance and larges
28、t outside tolerance allowed in the relevant material standard(s). 3.1.3 Tests shall be performed with or without closet flanges. 3.1.4 Pipe shall be machined to obtain the dimen- sional requirements for testing in accordance with para. 2.1 within a +O.OlO in. (0.25 mm) tolerance. 3.1.5 Figure 1 illu
29、strates a test stand and Figs. 2 through 6 illustrate the test fixtures to be used in performance testing. 3.2 Joint Tightness 3.2.1 Pressure Test. The joint connections shall be hydrostatically tested at room temperature in accordance with paras. 3.2.1.1 through 3.2.5. 3.2.1.1 Test Method. The asse
30、mbly shall be filled with water, expelling all air and pressurizing to 10 psi (69 kPa). Pressure shall be maintained for 15 minutes, after which the assembly shall be checked for leaks. 3.2.1.2 Performance Requirement. No leak- age shall be permitted during any pressure test. 3.2.2 Set Up #I. A conn
31、ection shall be assembled according to manufacturers instructions, with Test Fix- ture 1 (see Fig. 2) and pipe with the minimum dimen- sional tolerance of the applicable I.D. or O.D. in a test stand (see Fig. I). 3.2.3 Set Up #2. A connection shall be assembled, according to manufacturers instructio
32、ns, with Test Fix- ture 2 (see Fig. 3) and pipe with the maximum dimen- 2 PLASTIC FITTINGS FOR CONNECTING WATER CLOSETS TO THE SANITARY DRAINAGE SYSTEM ASME A112.4.3-1999 sional tolerance of the applicable I.D. or O.D. in a test stand and pressure tested as specified in paras. 3.2.1.1 and 3.2.1.2. 3
33、.2.4 Set Up #3. A connection shall be assembled, according to manufacturers instructions, with Test Fix- ture 3 (see Fig. 4) and pipe with the minimum dimen- sional tolerance of the applicable I.D. or O.D. in a test stand and pressure tested as specified in paras. 3.2.1.1 and 3.2.1.2. 3.2.5 Set Up #
34、4. A connection shall be assembled, according to manufacturers instructions with Test Fix- ture 4 (see Fig. 5) and pipe with the maximum dimen- sional tolerance of the applicable I.D. or O.D. in a test stand and pressure tested as specified in paras. 3.2.1.1 and 3.2.1.2. 3.3 Perpendicular Misalignme
35、nt (Variation) 3.3.1 Test Method. A connection shall be assem- bled according to manufacturers instructions, with Test Fixture 5 (see Fig. 6) and a randomly selected pipe Test fixture Closet flange optional for test -, 10 in. (254 mm) approx. . sample of appropriate size. The pipe sample shall be pl
36、aced in a test stand in the nonnal installed position for a minimum of 15 minutes and then deflected to an angle of 5 deg from the horizontal plane. 3.3.2 The assembly shall be filled with water, expel- ling all air and pressure to IO psi (69 kPa). Pressure shall be maintained for 15 minutes and che
37、cked for leaks. 3.3.3 Performance Requirement. The connec- tion shall not leak when hydrostatically tested at room temperature in accordance with para. 3.3.2. 4 MARXING AND IDENTIFICATION The following information shall be provided on the (a) the manufacturers name or trademark; (b) the model number
38、; and (c) the standard designation number. product: , ge Pressure regulator . in. See (19 mm) plate for water- 4.13 in. or emery cloth (10; mml 1 GENERAL NOTE: + 0.31 in. Rcut after dimension 5.0 deg is established. - 1.00 in. (25 rnm) Detail “D“ Two Times Size FIG. 5 TEST FIXTURE 4 7 ASME A112.4.3-
39、1999 1.00 in. (25 mm) Tap for pipe THD I I I I I I I I 1 f I_ 4.38 in. - 8.75 in. (111 mm) (222 mm) PLASTIC FllTlNGS FOR CONNECTING WATER CLOSETS TO THE SANITARY DRAINAGE SYSTEM 3.6 in. (92 mm) dia. 3.50 in. (13 mm) 8.75 in. (222 rnm) (64 mm) dia. Prepare surface with (8 mm) R 90 grit sandpaper 1.13
40、 in. or emery cloth GENERAL NOTE: 0.31 in. R cut after dimension 5.0 deg is established. - 1.00 in. (25 mm) Detail “E“ Two Times Size 0.50 in. (13 mm) Air relief clear plastic 1.12 in. (28 mm) 0.50 (13 in. mm) uu 0.62 in. Attach to (16 mrn) plate for water- tight joist Detail “ E “ FIG. 6 TEST FIXTURE 5 8
