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[citation needed] Before the "loose key" was invented it was common for some landlords or caretakers to take off the handle of a tap, which had teeth that would meet up with the gears on the valve shaft. This tooth and cog system is still used on most modern taps. "Loose keys" may also be found outside homes to prevent passers-by from using them.
What often causes confusion is the large amount of evidence of widespread lead poisoning, particularly amongst those who would have had easy access to piped water, [21] an unfortunate result of lead being used in cookware and as an additive to processed food and drink (for example as a preservative in wine). [22]
The reason is that external faucets may be attached to hoses which may be immersed in an external body of water, such as a garden pond, swimming pool, aquarium or washing machine. In these situations the unwanted flow is not actually the result of a siphon but suction due to reduced pressure on the water supply side.
Valve leakage refers to flow through a valve which is set in the 'off' state.. The importance of valve leakage depends on what the valve is controlling. For example, a dripping tap is less significant than a leak from a six-inch pipe carrying high-pressure radioactive steam.
A zinc-carbon battery is an example of a commonly-seen leaking component; the electrolytes inside the cell sometimes leak out of the cell casing and cause damage to an electronic appliance. [1] Water leaks occur when there is damage to the water supply system or wastewater system on a property that causes a drip or flow to release.
The operators assumed that owing to bad maintenance and leaking valves, it was possible for the water to leak into the tank. [8] [74] This water entry route could not be reproduced despite strenuous efforts by motivated parties. [75] UCC claims that a "disgruntled worker" deliberately connecting a hose to a pressure gauge connection was the ...