ASME A112.18.1 pdf download.Plumbing supply fittings.
(a) automatic compensating valves for individual wall-mounted showering systems;
(b) bath and shower supply fittings;
(c) bidet supply fittings;
(d) clothes washer supply fittings;
(e) drinking fountain supply fittings;
(I) humidifier supply stops;
(g) kitchen, sink, and lavatory supply fittings;
(Ii) laundry tub supply fittings;
(i) lawn and sediment faucets;
(j) metering and self-closing supply fittings;
(k) shower heads, hand-held showers, and body sprays; and
(1) supply stops.
1.2
This Standard does not cover
(a) plumbing waste fittings, which are covered by ASME All 21 8.2/CSA Bi 252;
(b) other devices (e.g.. temperature-actuated in-line mixing valves), which are covered by CSA Bl 25.3 or other plumbing product Standards; and
(C) flexible water connectors under continuous pressure, which are covered by ASME Al 12.18.6/ CSA B125.6.
1.3
Except for push-fit fittings, this Standard does not cover pipes and tubes or pipe and tube fittings.
In this Standard, “shall’ is used to express a requirement, i.e., a provision that the user is obliged to satisty in order to comply with the standard; “should” is used to express a recommendation or that which is advised but not required; “may” is used to express an option or that which is permissible within the limits of the standard; and “can” is used to express possibility or capability.
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 (non-mandatory) to define their application.
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.
4.7 Backflow prevention
Fittings shall be designed to protect the potable water supply from contamination due to backilow by a means that meets the applicable requirements of CIduse 5.9.
Diverting and anti-siphoning devices incorporated into a fitting shall be removable for cleaning, repair. and replacement.
4.8 Cover plates and escutcheons
4.8.1
The cover plates of deck-mounted lavatory arid sink supply fittings shall have the dimensions indicated in Figure 1, except as specified in Clause 4.8.2.
4.8.2
Concealed and deck-mounted supply fitting bodies or their escutcheons shall be capable of concealing a circular area with a diameter of not less than 44 mm (1.73 in).
4.9 Toxicity and lead content
4.9.1
Fittings covered by this Standard shall comply with the applicable requirements of NSF/ANSI 61.
4.9.2
Solders and fluxes in contact with potable water shall not exceed, by mass, 0.2% lead content. Metal allays in contact with potable water shall not exceed 8% lead content.
4.9.3
Fittings intended to convey or dispense water for human consumption through drinking or cooking shall not contain a weighted average lead content in excess of 0.25% when evaluated in accordance with the test method specified in NSF/ANSI 372.
4.10 Frost-proof faucets and hydrants
Frost-proof faucets and hydrants shall comply with the performance requirements of this Standard.
Devices with integral backflow protection shall comply with CAN/CSA-B64 Series or ASSE 1019.
4.11 Shower heads, body sprays, and hand-held showers
4.11.1 General
When used as a component part of a shower head, body Splay, or hand-held shower assembly, the flow-restricting inserts shall be mechanically retained at the point of manufacture. For the purpose of this requirement, the term mechanically retained” shall mean that a force of 36 N (8.0 lbf) or more is required to remove the flow-restncting insert. This requirement shall not apply to shower heads that would cause water to leak significantly from areas other than the spray face it the flow-restricting insert were removed.
4.11.2 High-efficiency shower heads and hand-held showers.
ASME A112.18.1 pdf download
