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2. Automated pool cleaner - Wikipedia

   en.wikipedia.org/wiki/Automated_pool_cleaner

   All vacuum pumps shall be equipped with hair and lint strainers. Recirculation or separate vacuum pumps shall not be used for vacuuming purposes when above 3 horsepower. When the system is plumbed in, the vacuum fittings shall be located to allow cleaning the pool with a 50-foot maximum length of hose.

3. Swimming pool sanitation - Wikipedia

   en.wikipedia.org/wiki/Swimming_pool_sanitation

   The sieve baskets are easily removed daily for cleaning as is the sand unit, which should be back-washed at least once a week. A perfectly maintained consecutive dilution system drastically reduces the build-up of chloramines and other DBP's. The water returned to the pool should have been cleared of all organic waste above 10 microns in size.

4. Reduced pressure zone device - Wikipedia

   en.wikipedia.org/wiki/Reduced_pressure_zone_device

   A reduced pressure zone device is tested with a device called a differential gauge. This gauge uses hoses attached to the various test cocks of the RPZD and checks to be certain that the check valve springs as well as the relief valve spring are not fouled and are working properly.

5. 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]

6. 8 Refreshing Pool Cleaning Tips You Need to Try This Summer

   www.aol.com/8-refreshing-pool-cleaning-tips...

   Thankfully, there are numerous time- and money-saving pool cleaning tips out there to keep your pool looking as good as new. Photo: The Good Brigade / DigitalVision / Getty Images

7. 'This is our house': Mom and son fought off Palisades fire ...

   www.aol.com/news/house-mom-son-fought-off...

   So Andrew pulled the heavy metal pump over to the edge of the pool and affixed a green hose that snaked down into the ash- and debris-muddied water to one opening and a long blue fire hose to another.