CAP. 102]
[r. 10 cont.}
Waterworks.
tap or other means of drawing off water (other than a screwed plug with a removable key for emptying the system for cleansing or repairs) shall be connected to any part of the hot water system below the top of the hot water cylinder in such a way that the level of the water in the cylinder can be lowered. Every cylinder shall have an expansion pipe which shall be carried up and bent over the cold water cistern so that the open end of the pipe shall be above the surface G.N.A. 75/51. of the water when the cistern is charged. All hot water boiler and storage cylinders shall have stop cocks on the inlet and outlet pipes.
(21) Hot water apparatus generally shall conform to the standards laid down for the time being by the British Waterworks Association.
Flushing apparatus.
(The following standards apply only in cases where permission has been granted under regulation 17 to use water supplied from the waterworks for flushing water closets, latrines and urinals.)
(22) Every water closet, latrine and urinal shall be provided with a flushing cistern made of cast iron or other suitable approved material.
(23) Flushing cisterns for water closets shall be capable of giving a flush of not less than 2 gallons nor more than 3 gallons of water.
(24) The tail pipe and flush pipe of flushing cisterns for water closets shall have an internal diameter of not less than one and one quarter inches.
(25) Every flushing cistern shall have an overflow which shall terminate in a conspicuous position.
(26) Every flushing cistern shall have a ball cock of such design as to allow the cistern to fill rapidly but shall shut off the supply when the water level reaches a level one inch below the overflow. The nose or outlet of the ball cock shall be above the surface of the water when the cistern is charged. A stop cock shall be fixed behind the ball cock.
(27) Every flushing cistern shall have an efficient waste-preventing device of the valveless type.
166
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CAP. 102]
[r. 10 cont.}
Waterworks.
tap or other means of drawing off water (other than a screwed plug with a removable key for emptying the system for cleansing or repairs) shall be connected to any part of the hot water system below the top of the hot water cylinder in such a way that the level of the water in the cylinder can be lowered. Every cylinder shall have an expansion pipe which shall be carried up and bent over the cold water cistern so that the open end of the pipe shall be above the surface G.N.A. 75/51. of the water when the cistern is charged. All hot water boiler and storage cylinders shall have stop cocks on the inlet and outlet pipes.
(21) Hot water apparatus generally shall conform to the standards laid down for the time being by the British Waterworks Association.
Flushing apparatus.
(The following standards apply only in cases where permission has been granted under regulation 17 to use water supplied from the waterworks for flushing water closels, latrines and urinals.)
(22) Every water closet, latrine and urinal shall be provided with a flushing cistern made of cast iron or other suitable approved material.
(23) Flushing cisterns for water closets shall be capable of giving a flush of not less than 2 gallons nor more than 3 gallons of water.
(24) The tail pipe and flush pipe of flushing cisterns for water closets shall have an internal diameter of not less than one and one quarter inches.
(25) Every flushing cistern shall have an overflow which shall terminate in a conspicuous position.
(26) Every flushing cistern shall have a bail cock of such design as to allow the cistern to fill rapidly but shall shut off the supply when the water level reaches a level one inch below the overflow. The nose or outlet of the ball cock shall be above the surface of the water when the cistern is charged. A stop cock shall be fixed behind the ball cock.
(27) Every flushing cistern shall have an efficient waste- preventing device of the valveless type.
166
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