. The sanitary news : healthy homes and healthy living : a weekly journal of sanitary science. Fig 3-moments, the operation involving the use of notools but a simple Fig. 4 illustrates plainly the details of thevalve and its seat in a large flushing trap, fourinches in diameter, and shows how the variousparts are held firmly concentric, even whentrap is opened, as shown in Fig. 3. It will benoticed that the injurious contact of rubber withmetal is avoided, and that the ball, squeezingup and down through the enameled ring, neverfalling alike twice consecutively, must be thor-oughly wip
. The sanitary news : healthy homes and healthy living : a weekly journal of sanitary science. Fig 3-moments, the operation involving the use of notools but a simple Fig. 4 illustrates plainly the details of thevalve and its seat in a large flushing trap, fourinches in diameter, and shows how the variousparts are held firmly concentric, even whentrap is opened, as shown in Fig. 3. It will benoticed that the injurious contact of rubber withmetal is avoided, and that the ball, squeezingup and down through the enameled ring, neverfalling alike twice consecutively, must be thor-oughly wiped at each operation. Attention isalso called to the thickness of the valve shell, ofthe best gum rubber, which experiment hasshown cannot be abraded by this use or injuredby sewage contact. Any imperfection in anyjoint must be at once disclosed by need be none. In Fig. 5 is illustrated thebest possible evidence of theperfect tightness of the lockof the valve in its seat. Itwas drawn from a glass ex-hibition trap, illustrating theordinary operation of the de-vice, and showing that, uponeach operation compressedair is held between the waterand the ball un
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Keywords: ., bo, bookcentury1800, bookdecade1880, bookidsanitarynewsheal08chic
