ASME A112.18.2:2020 pdf download

ASME A112.18.2:2020 pdf download.Plumbing waste fittings
1 Scope
1.1 This Standard covers plumbing waste fittings of sizes NPS-2 and smaller. 1.2 This Standard does not cover a) plumbing supply fittings, which are covered by ASME A112.18.1/CSA B125.1; b) other devices (e.g., temperature-actuated in-line mixing valves), which are covered by CSA B125.3 or other plumbing product standards; and c) flexible water connectors under continuous pressure, which are covered by ASME A112.18.6/ CSA B125.6. 1.3 This Standard does not cover pipes and tubes or pipe and tube fittings that are downstream of the trap. 1.4 In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; and “may” is used to express an option or that which is permissible within the limits of the standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (nonmandatory) to define their application. 1.5 SI units are the units of record in Canada. In this Standard, the inch/pound units are shown in parentheses. The values stated in each measurement system are equivalent in application; however, each system is to be used independently. Combining values from the two measurement systems can result in non- conformance with this Standard. All references to gallons are to U.S. gallons. For information on the conversion criteria used in this Standard, see Annex A.
2 Reference publications
Centre outlet — a lavatory waste fitting without an overflow opening. Continuous waste assembly — a drain assembly for multiple compartments of a fixture that is connected to a common trap. See Figures 7 and 8. Diversion tee — a fitting of a continuous waste assembly consisting of a tee fitting and an integral element that directs the flow downward to the outlet of the tee. See Figure 8. Grey water — untreated residential wastewater from bathtubs, showers, lavatories, clothes washers, and laundry tubs that has not come into contact with kitchen waste or waste from a sanitary unit. Note: Grey water does not include wastewater from kitchen sinks or dishwashers. Grey water diverter — a waste fitting that incorporates a mechanism that can be operated by a user to direct grey water for reuse or disposal. Linear shower drain — a receptacle containing a trench- or channel-shaped body and a solid cover or grate that is flush with the adjoining surface for receiving wastewater from a shower and conveying it to the drainage system. Overflow — a conduit that is integral or attached to a fixture and whose function is to remove liquid from a fixture after the fixture has been filled past the desired level. Patent overflow — a lavatory waste fitting incorporating an overflow opening. Sanitary unit — a water closet, urinal, bidet, or bedpan washer. Significant surface — an exposed surface that, if blemished, spoils the appearance or affects the performance of a fitting. Slip joint — an adjustable tubing connection that consists of a compression nut and compression washer and is designed to fit a threaded adapter fitting or a standard taper pipe thread. Standard tools — tools that are normally carried by plumbers for installing and maintaining plumbing. Note: Examples include screwdrivers, key wrenches, flat-jawed wrenches, and pliers.Strainer — a device designed to prevent debris from entering a drainage system. Strainer basket — a removable component of a sink strainer assembly, designed to collect debris. Strainer body — the fixed, exposed component of a sink strainer assembly connected to the fixture that accommodates the strainer basket. Strainer shell — the unexposed component of a sink strainer assembly that connects the strainer body to the fixture that accommodates the strainer basket.