ASME A112.19.7:2020 pdf download

ASME A112.19.7:2020 pdf download.Hydromassage bathtub systems
1 Scope
1.1 This Standard specifies general requirements, test methods, and markings for whirlpool and air-jetted bathtubs and suction fittings used in hydromassage bathtub systems that incorporate a bathtub and circulation pump. The circulation pump can be with or without a) a piping system; and b) induction of air (which can be achieved by integral suction or through an air pump). 1.2 This Standard does not cover a) spas and hot tubs covered in CAN/CSA-C22.2 No. 218.1 and UL 1563; b) portable hydromassage products covered in CSA Electrical Bulletin 1268 and CSA Electrical Bulletin 1270; and c) hydrotherapy bathtubs or patient bathing systems for institutional use. 1.3 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. 1.4 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.
3 Definitions and abbreviations
3.1 Definitions The following definitions shall apply in this Standard: Accessible — accessible by removing an access panel, door, or similar obstruction, using tools. Circulation system — the inlets, outlets, pumps, air induction systems, valves, piping or tubing, fittings, and other appurtenances used to circulate water from a hydromassage bathtub system. Note: The circulation system can be factory or field assembled, and it can be independent or interconnected. Disintegrate — to lose any material from a fitting, exclusive of plating or finish. Fixture — a device that receives water, waste matter, or both and directs these substances into a drainage system. Hydromassage bathtub system — a plumbing system that incorporates one or both of the following: a) water jets, with or without air introduced by integral suction. The water jets include a water recirculation system with self-draining piping and a water pump; and b) an air induction system that introduces air into the system through jets using a blower or air pump. Note: A hydromassage bathtub system can be piped or unpiped (e.g., a pipeless whirlpool bathtub). Jet — a fitting that creates a high-velocity stream of water with or without induction of air.Pipeless whirlpool bathtub — a bathtub equipped with one or more unitized jet/suction fittings to circulate water without piping and discharge the water after each use. Plumbing appurtenance — a manufactured device, prefabricated assembly, or field assembly of component parts that is an adjunct to the basic piping system and plumbing fixture. Note: An appurtenance demands no additional water supply, nor does it add any discharge load to a fixture or the drainage system. Standard liquid detergent — a mixture of 8.0% tetrapotassium pyrophosphate, 7.0% ethoxylated-alkyl- phenol, 8.0% sodiumxylenesulfonate, 1.5% butyl cellosolve, and 75.5% water, measured by volume. Note: The following commercial products are acceptable: a) tetrapotassium pyrophosphate: Monsanto TKPP; b) ethoxylated-alkyl-phenol: Monsanto Sterox NJ or Rohm & Haas Triton X-100; c) sodiumxylenesulfonate: Stepan Chemical Co. Stepan SXS; and d) butyl cellosolve: 2-butoxy ethanol. Unitized jet/suction fitting — an apparatus with a means for circulating water in a whirlpool bathtub without routing the water through the circulation system.