e ofthose little things that are always the best to make moneyout of. The water enters at A, and is discharged at B Thevalve, C, fits into its seat above, and is connected by itsstem, c, with the flexible india-rubber diaphragm, D, towhich it is secured by the screw, d. The faucet is closedby the… … pressure of the incoming water, as soon as this pressureceases, the valve falls down away from its seat, permit-ting a back flow outward, freely through the cock.This property adapts this faucet to many situations inwhich it is very valuable. For instance, a light boilerwhich is above the altitude…
