Hong Kong Regulations

GAS SAFETY (GAS SUPPLY) REGULATIONS - REGULATION 9

Pressure relief valves fitted to cylinders

The owner of a cylinder which has a water capacity of-

   (a)  not less than 40 litres, shall not use the cylinder to contain
        liquefied petroleum gas unless the cylinder is fitted with a pressure
        relief valve-

        (i)    of the spring-loaded, or equivalent, type; and

        (ii)   in contact with the vapour space of the cylinder when it is
               positioned for normal use;

   (b)  less than 40 litres, shall not, subject to paragraph (c), use the
        cylinder to contain liquefied petroleum gas if the cylinder is fitted
        with a pressure relief valve unless the cylinder has-

        (i)    been used to contain such gas before the commencement of the
               Ordinance; and

        (ii)   not been re-valved on or after that commencement; and

   (c)  less than 40 litres, shall not use the cylinder to provide-

        (i)    liquefied petroleum gas to a dim sum trolley; or

        (ii)   such gas in liquid form, unless the cylinder is fitted with a
               pressure relief valve. (Enacted 1990)