Preface This is the fourth edition of ASME A112.18.2/CSA B125.2, Plumbing waste fittings. It supersedes the previous editions, published in 2015 and 2011. Together with ASME A112.18.1/CSA B125.1, Plumbing supply fittings, CSA B125.3, Plumbing fittings, and ASME A112.18.6/CSA B125.6, Flexible water connectors, this Standard forms a series to cover plumbing fittings. This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. This Standard was approved as an American National Standard by the American National Standards Institute on April 23, 2020.

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PDF Pages	PDF Title
3	Standards Update Service
7	Contents
10	ASME A112 Standards Committee on Plumbing Materials and Equipment
14	ASME A112.18.2 Project Team on Fixture Waste Fittings
17	CSA Technical Committee on Plumbing Fixtures
23	CSA Harmonization Task Group on Plumbing Fittings
27	Preface
29	1 Scope
30	2 Reference publications
31	3 Definitions and abbreviations 3.1 Definitions
33	3.2 Abbreviations 4 General requirements 4.1 Materials 4.1.1 General 4.1.2 All waste fittings 4.1.3 Plastic tubular waste fittings
34	4.1.4 Plastic pipe and pipe fittings 4.1.5 Copper alloys 4.1.6 Cast iron 4.1.7 Ductile iron 4.1.8 Stainless steel 4.1.9 Elastomeric fittings 4.2 Installation 4.2.1 Connection to waste system
35	4.2.2 Protection of finish 4.2.3 Fixture seal 4.3 Threads 4.3.1 DWV plastic pipe and fittings 4.3.2 Metallic pipes and fittings 4.3.3 Compression and union nuts 4.3.4 Tapped bosses 4.4 Solder connections 4.5 Replacement parts 4.5.1 Use of standard tools 4.5.2 Replacement part design
36	4.6 Dimensions 4.6.1 Outlet size 4.6.2 Slip joints 4.6.3 Wall thickness 4.6.4 Sink strainer assemblies
37	4.6.5 Traps 4.6.6 Tubing stops 4.6.7 Subdrains for built-up shower pans
38	4.6.8 Grey water diverters 4.7 Mechanical stoppers 4.8 Additional requirements for linear shower drains
39	5 Performance requirements and test procedures 5.1 General 5.1.1 Preconditioning 5.1.2 Installation for testing 5.1.3 Testing sequence 5.2 Corrosion 5.2.1 Performance requirements
40	5.2.2 Test procedure 5.3 Thermal cycling 5.3.1 Performance requirements 5.3.2 Test procedure
41	5.4 Coatings 5.5 Shower drain strainers 5.5.1 Performance requirements 5.5.2 Load test procedure 5.6 Sink strainer assemblies 5.6.1 Performance requirements 5.6.2 Hot oil exposure
42	5.6.3 Water absorption 5.6.4 Point impact 5.7 Body and clamping rings of subdrains for built-up shower pans
43	5.8 Minimum flow rate 5.8.1 Performance requirements 5.8.2 Test procedure 5.8.3 Grey water diverters 5.9 Strength 5.9.1 Thread torque strength
44	5.9.2 Hydrostatic pressure 5.10 Life cycle 5.10.1 Performance requirements 5.10.2 Test procedure 5.11 Seals leakage 5.11.1 Waste fittings for drainage flow control
45	5.11.2 Other waste fittings 5.12 Leakage test for the seam between the bonding flange and membrane 5.12.1 Performance requirements 5.12.2 Test procedures 6 Markings, packaging, and installation instructions 6.1 General
46	6.2 Packaging 6.3 Instructions for elastomeric waste fittings 6.4 Grey water diverters 6.4.1 Markings 6.4.2 Instructions
47	Figures Figure 1 Sink and lavatory waste, trap, centre outlet, and patent overflow fittings
48	Figure 2 Trap wall adapter Figure 3 Sink strainer
49	Figure 4 Sink strainer tailpiece
50	Figure 5 Tee Figure 6 Twin waste elbow
51	Figure 7 Centre outlet — Continuous waste assembly Figure 8 End outlet — Continuous waste assembly
52	Figure 9 Typical subdrain for built-up shower pans
54	Figure 10 Grey water diverter — Test of water flow through the sanitary drainage system outlet
55	Figure 11 Grey water diverter — Test of water flow through the diversion outlet
56	Figure 12 Grey water diverter — Test of water with the diversion mechanism in the diverted position and the diversion outlet blocked
57	Figure 13 Typical lavatory pop-up drain
58	Figure 14 Waste and overflow
59	Annex A (informative)Unit conversion and rounding criteria

Published By	Publication Date	Number of Pages
ASME	2020	60


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Standard Title	ASME A112.18.2/CSA B125.2 – 2020: Plumbing Waste Fittings
Published Code	ASME
Publication Date	2020
Pages Count	60

ASME A112.18.2 2020

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