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Henrico's water main on Staples Mill Road dates to the 1950s, and had had emergency repairs completed on it many times in the 18 months before the outage. During these repairs, officials had been able to replace leaking valves and install new valves, better allowing them to close off sections of the pipe if necessary. [23]
The valve was usually the double-poppet.". [7] As described by Somerscales (1990:283) it was 'a quick-closing valve gear using poppet valves, and a trip gear to control the cut-off ... with gravity assisted closure ... Sickels used a water-filled dashpot to decelerate the valve smoothly as it approached the end of its travel.'. [8]
A safety shutoff valve should be fail-safe, that is close upon failure of any element of the input control system (such as temperature controllers, steam pressure controllers), air pressure, fuel pressure, current from a flame detector, or current from other safety devices such as low water cutoff, and high pressure cutoff. A blowdown valve ...
Trump’s focus on California water isn’t just limited to the “valve” but even targeted one of the areas water supplies in an executive order. ... Trump said that he would cut off wildfire ...
On Thursday evening, the Idaho Department of Water Resources issued a curtailment order that could, as soon as Monday, cut off agricultural groundwater pumping in much of Idaho’s prime farmland ...
When the user inserted a coin, it triggered the levers to open a valve and pour out a small amount of holy water. Image credits: Isabella Thornton #5 Piano Especially Designed For People Who Are ...