ASME A112.1016:2011 pdf download.Performance requirements for automatic compensating valves for individual showers and tub/shower combinations
4.4.3 Failure criteria
A maximum operating torque or force to adjust the device exceeding the requirements specified in ASME
A112.18.1/CSA B125.1 shall result in the rejection of the device.
4.5 Life cycle tests
4.5.1 Purpose
The purpose of these tests is to determine if there is any deterioration in the performance of the device
upon completion of the following cycles of operation:
(a) The operating control test shall simulate the intended operating motion of the device.
(b) The internal elements test shall simulate inlet pressure and temperature changes.
4.5.2 Procedure — Operating controls
The life cycle test for operating controls shall be conducted as follows:
(a) Set up and test the specimen in accordance with the set-up and conditions specified in Figure 2 with valves Vi and V3 and the device’s valve fully open. This test shall simulate the intended operating motion of the device without impacting the end stops, except as agreed to by the manufacturer.
(b) Prior to starting the test, the following conditions shall be established and maintained for 1 mm:
(i) 344.8 ± 34.5 kPa (50.0 ± 5.0 psi) flowing as measured at the inlets;
(ii) 40.6 ± 3.0 °C (105.0 ± 5.0°F) measured at the outlet;
(iii) A minimum flow of 4.5 1/rn (1 .2 gpm) by adjusting valve V5; and
(iv) the device’s maximum outlet temperature adjusted to 49.0 +0.0, -6.0 °C (120.0 +0.0, -10.0°F) using the device’s temperature limit stop adjustment.
(c) The temperature and volume control mechanism(s) shall be tested for 20,000 cycles of the control dial, handle, or knob, cycled at a constant rate between 5 and 20 cycles per minute, as specified in Items (i) to iv). The packing nut may be tightened once during the life cycle test to stop leakage.
(i) Single-handle mixing valves of the cycling type: the control shall be operated from full-off to the full-on cold, position through full-on mixed to the full-on hot position, through full-on mixed to the full-on cold position, and back to the off position, to complete one cycle.
A maximum operating torque or force to adjust the device exceeding the requirements specified in ASME
A112.18.1/CSA B125.1 shall result in the rejection of the device.
4.5 Life cycle tests
4.5.1 Purpose
The purpose of these tests is to determine if there is any deterioration in the performance of the device
upon completion of the following cycles of operation:
(a) The operating control test shall simulate the intended operating motion of the device.
(b) The internal elements test shall simulate inlet pressure and temperature changes.
4.5.2 Procedure — Operating controls
The life cycle test for operating controls shall be conducted as follows:
(a) Set up and test the specimen in accordance with the set-up and conditions specified in Figure 2 with valves Vi and V3 and the device’s valve fully open. This test shall simulate the intended operating motion of the device without impacting the end stops, except as agreed to by the manufacturer.
(b) Prior to starting the test, the following conditions shall be established and maintained for 1 mm:
(i) 344.8 ± 34.5 kPa (50.0 ± 5.0 psi) flowing as measured at the inlets;
(ii) 40.6 ± 3.0 °C (105.0 ± 5.0°F) measured at the outlet;
(iii) A minimum flow of 4.5 1/rn (1 .2 gpm) by adjusting valve V5; and
(iv) the device’s maximum outlet temperature adjusted to 49.0 +0.0, -6.0 °C (120.0 +0.0, -10.0°F) using the device’s temperature limit stop adjustment.
(c) The temperature and volume control mechanism(s) shall be tested for 20,000 cycles of the control dial, handle, or knob, cycled at a constant rate between 5 and 20 cycles per minute, as specified in Items (i) to iv). The packing nut may be tightened once during the life cycle test to stop leakage.
(i) Single-handle mixing valves of the cycling type: the control shall be operated from full-off to the full-on cold, position through full-on mixed to the full-on hot position, through full-on mixed to the full-on cold position, and back to the off position, to complete one cycle.
