CSA B125.1-12 pdf free download

CSA B125.1-12 pdf free download.Plumbing supply fittings.
5.6.3 Fittings and other control devices
5.6.3.1 Mixing valves
Notes:
(1) The tests specified in this Clause may be started in the cold position and then switched to the hot position as long as the specified sequences are maintained.
(2) The temperature cycle from the hot open to the cold open and back to the hot open position is counted as one cycle.
5.6.3.1.1
For fittings with a rotary action valve, the apparatus shall be adjusted to turn the valve and any associated handle mechanism from the fully closed position to a position between 37% and 75% of the fully open position, but not exceeding 3600. This test shall simulate the intended operating motion of the fitting without making contact with the end stops, except as agreed to by the manufacturer.
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.CSA B125.1-12 pdf free download.