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An outdoor water-use restriction is a ban or other lesser restrictions put into effect that restricts the outdoor use of water supplies. Often called a watering ban or hosepipe ban, [1] it can affect: irrigation of lawns; car washing; recreational uses such as filling swimming pools and using water slides
Backflow prevention device. The simplest, most reliable way to provide backflow prevention is to provide an air gap.An air gap is simply an open vertical space between any device that connects to a plumbing system (like a valve or faucet) and any place where contaminated water can collect or pool.
Water and gas taps have adjustable flow: gate valves are more progressive; ball valves more coarse, typically used in on-off applications. Turning a valve knob or lever adjusts flow by varying the aperture of the control device in the valve assembly. The result when opened in any degree is a choked flow.
Valves can be categorized into the following types, based on their operating mechanism: Ball valve, for on–off control without pressure drop. Ideal for quick shut-off, since a 90° turn completely shuts off, compared to multiple 360° turns for other manual valves; Butterfly valve, for on–off flow control in large diameter pipes
The average annual flow of the Napa River is about 1,300 cubic feet per second (37 m 3 /s) through the populated center of the City of Napa. During a 100-year flood, the flow increases to an estimated 41,000 cu ft/s (1,200 m 3 /s) to 46,000 cu ft/s (1,300 m 3 /s). The Napa River-Napa Creek Flood Protection Project employs a combination of ...
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Headquartered in San Jose, California, Orchard Supply Hardware had dozens of locations throughout California, with expansions into Oregon and Florida. After starting as a non-profit cooperative in 1931, the company later turned into a for-profit corporation before it was bought and sold by a number of different corporations during the 1980s.
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