This Standard applies to plumbing supply fittings of NPS-1 nominal size and smaller, plumbing waste fittings of NPS-2 nominal size and smaller, and master thermostatic water mixing valves of nominal size NPS-4 and smaller. These devices include, but are not limited to, the following:
(a) bath and/or shower supply fittings;
(b) bidet supply fittings;
(c) clothes washer supply fittings;
(d) drinking fountain supply fittings;
(e) laundry tub supply fittings;
(f) lavatory supply fittings;
(g) sink supply fittings;
(h) water closet tank supply fittings;
(i) automatic compensating supply valves (domestic);
(j) pressurized flushing devices (eg, flushometer valves, flushometer tanks);
(k) humidifier supply stops;
(l) sediment and lawn faucets;
(m) supply line stops;
(n) trap primers;
(o) thermal expansion relief valves;
(p) bath and shower waste fittings;
(q) continuous waste fittings;
(r) drinking fountain waste fittings;
(s) laundry tub waste fittings;
(t) lavatory waste fittings;
(u) sink waste fittings;
(v) antisiphon ballcocks; and
(w) master thermostatic water-mixing valves.
This Standard provides requirements for traps intended for use i n accessible locations only.
This Standard does not apply to conventional pipes and tubes or pipe and tube fittings that are covered by other Standards.
Values are given in SI (metric) units only, with the exception of units such as thread sizes for which there is no metric conversion. For conversions, see Appendix A.