Technical Drawing - Exam Papers - Ordinary - 2006 - Engineering
(a) Using the data table below make a fully dimensioned drawing of the machine part shown, showing all specifications.
Shown is a lever type relief valve.
(i) Draw a parts list, in table format, which includes the item number and name for each of the parts 1, 2, 3, 4 and 5.
(ii) Explain, with the aid of freehand sketches and with reference to the letters A, B, C, D and E, the operation of the air relief valve.
(iii) Explain, with the aid of sketches, how the valve could be regulated to operate at different air pressures.
Using large freehand sketches, explain the following engineering terms:
(i) Flanged elbow;
(ii) Rolled steel channel;
(iii) Butterfly valve.