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Flushometers shall be installed in a manner to make them readily accessible for repairing. When a direct flush valve is operated, it shall complete its cycle of operation automatically, opening fully and closing positively under the service pressure. At each operation, the valve shall deliver water in sufficient volume and at a rate that will thoroughly flush the fixture and refill the fixture trap. Means shall be provided for regulating the flow in flush valves and shall be arranged with vacuum breakers and installed to conform to the provisions of Section P804 and Section P-806. Not more than one fixture shall be served by a single flush valve.
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