Specification

ASME A112.18.1-2018/CSA B125.1-18 Plumbing supply fittings
July 2018 © 2018 Canadian Standards Association
46
5.6.3.1.2
For single-control mixing valves or mixing valves with separate volume and temperature controls, the
apparatus shall be adjusted to operate the valve as follows:
a) For
the volume cycle, the volume control shall be moved from the fully closed position to
80%
(minimum)
of the fully open position, without making contact with the end stops, and back to
the
fully
closed position.
b) For
the temperature cycle, the temperature control shall be moved a minimum of 80% of the
range
between
the full hot position to the full cold position, and back to the full hot position,
without
making
contact with the end stops, except as agreed to by the manufacturer.
c) The
total number of cycles specified in Table 3 shall be calculated by adding together the
following:
i) the
total volume control cycles (open-closed-open) in the hot position;
ii) the
total volume control cycles (open-closed-open) in the cold position; and
iii) the
total number of temperature control cycles (full open hot position to full open
cold
position
and back to full open hot position).
The sequence shall be seven open-closed-open cycles in the hot position, then a switch to the cold
position, then seven open-closed-open cycles in the cold position, and then a switch back from the cold
position to the hot position, for a total of 15 cycles.
For single-control mixing valves, hot and cold water shall be supplied alternately to both supplies and
then switched every 1000 cycles.
5.6.3.1.3
For single-handle cycling mixing valves of the cycling type, the apparatus shall be adjusted to operate
the specimen from closed to 80% (minimum) of the range between the cold position and the hot
position, and back to closed, without making contact with the end stops, except as agreed to by the
manufacturer.
5.6.3.1.4
For two-handle mixing valves, the hot and cold water valves shall be opened and closed simultaneously.
5.6.3.2 Metering and self-closing faucets
5.6.3.2.1
Metering faucets shall close before reactivation of the next cycle. Adjustable metering faucets shall be
set to run for approximately 5 s after actuation. Non-adjustable metering faucets shall be operated at
their maximum run duration.
5.6.3.2.2
Self-closing faucets, not including metering, shall be opened to the applicable extent specified in
Clause 5.6.3.1.2 and allowed to close at a rate specified by the manufacturer.
5.6.3.3 Other devices
5.6.3.3.1
The following devices shall be tested at a flowing pressure of 345 ± 35 kPa (50 ± 5 psi) flowing through
the device outlet with the highest flow rate, with their standard accessories installed:
a) bidet
diverters;