Section 74 in The Inland Steam Vessels (Madhya Pradesh) Rules, 1962
74.
The pipe conveying the fuel to the carburettor shall be solid drawn copper and shall be provided with flexible bends, a cork or valve shall be fitted at each end of the pipe, one on the tank and the other on the carburettor or float chamber and the joints and the couplings shall readily be accessible in such a way that they can be made and kept perfectly oil-tight. Joints made of soft solder shall not be satisfactory and shall not be passed.
