Fig. 111.—Fixed Sprays.
Another type is manufactured by Messrs. Ham, Baker and Co. This is shown in [Fig. 112], from which it will be seen that it can be adapted to any existing installation, and to standard spigot pipes. Each jet being in the form of a stop-valve, any individual spray may be put out of action when necessary.
Messrs. W. E. Farrer, Ltd., manufacture a type shown in [Fig. 113]. The special feature of this is a loose disc inside the nozzle, which oscillates as the sewage passes through, and so tends to clear away any flocculent matter which may accumulate in the orifice of the nozzle. The sewage itself is delivered from the nozzle in the form of a very fine film, and it is claimed that by this means any nuisance from smell is reduced to the minimum.
Fig. 112.—Fixed Spray Nozzle.