1. | Every water closet pan shall be supplied with water from a flushing cistern, pressure flushing cistern or pressure flushing valve, and shall be so made and installed that after normal use its contents can be cleared effectively by a single flush of water, or where the installation is designed to receive flushes of different volumes, by the largest of those flushes. | |
2. | No pressure flushing valve shall be installed - | |
i. | in a house, or | |
ii | in any building not being a house where a minimum flow rate of 1.2 litres per second cannot be achieved at the appliance. | |
3. | No flushing device installed for use with a WC pan shall give a single flush exceeding 6 litres. | |
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