| Description | 81. Scum Cocks, Pipes and Valves. 1878, 1883, 1886, 1890. 10 items. Details of scum cocks, pipes, valves etc.
Bridgwater Water Works: Detail of scum pipe, manhole and blow out pipe - partially coloured tracing, Oct. 1878. 2 inch scum cock - partially coloured drawing, Nov. 1878.
Hunter River District Water Supply, New South Wales, Australia: 2¾ inch scum cock, Oct. 1883.
2 inch scum cock as made by John Fletcher - partially coloured drawing, Oct. 1883.
Portsmouth Sewage Outfall: Detail of 2 inch scum cock with cast iron mounting - drawing on blueprint paper, Jun. 1886.
Buenos Ayres Water Works, Argentina: Arrangement and details of scum valves, pipes and trough - partially coloured drawing, Jul. 1890.
2 inch standard scum cock - partially coloured tracing, not dated.
2 inch scum cock with cast iron mounting - coloured drawing and partially coloured tracing, not dated.
2½ inch scum valve - 2 tracings, pencil sketch of section of the valve, drawing of the tap, not dated. |