When.com Web Search

Search results

1. Results From The WOW.Com Content Network

2. Backflow prevention device - Wikipedia

   en.wikipedia.org/wiki/Backflow_prevention_device

   Backflow means the undesirable reversal of flow of a liquid, gas, or suspended solid into the potable water supply; a backflow preventer is designed to keep this from happening. Points at which a potable water system connects with a non-potable water system are called cross connections .

3. Reduced pressure zone device - Wikipedia

   en.wikipedia.org/wiki/Reduced_pressure_zone_device

   A reduced pressure zone device (RPZD, RPZ, or RPZ valve) is a type of backflow prevention device used to protect water supplies from contamination. RPZDs may also be known as reduced pressure principle (RP), reduced pressure principle backflow prevention devices, [1] [2] reduced pressure zone assemblies (RPZA), [3] or reduced pressure principle ...

4. Coppell, Texas - Wikipedia

   en.wikipedia.org/wiki/Coppell,_Texas

   George Coppell. The Coppell area was settled by German and French immigrants in the 1840s. Members of the Peters Colony also settled here in the 1840s. [8] Originally named Gibbs Station, after Barnett Gibbs (one of Texas's first lieutenant governors), the town was renamed in 1892 for George Coppell, a New York banker, who was born in Liverpool, England and probably moved to the United States ...

5. Air gap (plumbing) - Wikipedia

   en.wikipedia.org/wiki/Air_gap_(plumbing)

   This arrangement prevents any contaminants in the sink from entering into the potable water system by siphonage; this is the simplest form of backflow prevention. A common use of the term "air gap" in domestic plumbing refers to a specialized fixture that provides backflow prevention for an installed dishwasher. This "air gap" is visible above ...

6. Backwater valve - Wikipedia

   en.wikipedia.org/wiki/Backwater_valve

   Backwater valves commonly activate when a city's sewer lines are unable to handle a large amount of falling precipitation; this puts homes that are tied into the storm lines at risk of having water back flow into them. [citation needed] There is a big difference between backwater valves and backflow preventers: [citation needed]

7. Coppell - Wikipedia

   en.wikipedia.org/wiki/Coppell

   Coppell may refer to: Coppell, Ontario; Coppell, Texas. Coppell High School; Harry Coppell (born 1996), English pole vaulter; Steve Coppell (born 1955), English ...