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2. Zone valve - Wikipedia

   en.wikipedia.org/wiki/Zone_valve

   The system can be harder to design, requiring both "SPDT" thermostats or relays and the ability of the system to withstand the fault condition whereby all zone valves are closed simultaneously. Zone valves increase the pressure drop through the system, to varying degrees. Care is required during system design to achieve proper flow rates with ...

3. Sprinkler fitting - Wikipedia

   en.wikipedia.org/wiki/Sprinkler_fitting

   Fire sprinkler control valve assembly. Sprinkler fitting is a skilled trade that consists of assembling, installing, testing, repairing, inspecting, and certifying automatic fire suppression systems and their associated piping in commercial, industrial and residential buildings. [1] [2]

4. 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 ...

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   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

6. Franklin County Sheriff's Office seeks suspect in fatal Home ...

   www.aol.com/franklin-county-sheriffs-office...

   The sheriff's office received a call at 8:56 p.m. Friday, Aug. 23, in the parking lot at the Home Depot located at 100 S. Grener Ave in Prairie Township.

7. Plumbing - Wikipedia

   en.wikipedia.org/wiki/Plumbing

   Earlier, the waste disposal system had consisted of collecting waste and dumping it on the ground or into a river. Eventually the development of separate, underground water and sewage systems eliminated open sewage ditches and cesspools. In post-classical Kilwa the wealthy enjoyed indoor plumbing in their stone homes. [16] [17]