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  2. Pressure switch - Wikipedia

    en.wikipedia.org/wiki/Pressure_switch

    In dust control systems (bag filter), a pressure switch is mounted on the header which will raise an alarm when air pressure in the header is less than necessary. A differential pressure switch may be installed across a filter element to sense increased pressure drop, indicating the need for filter cleaning or replacement.

  3. Automated pool cleaner - Wikipedia

    en.wikipedia.org/wiki/Automated_pool_cleaner

    The CDC was founded (in 1946), followed by the Cabinet-level Department of Health, Education and Welfare (in 1953), now the Department of Health, and Human Services and its eleven operating divisions, the National Health Service Corps (in 1977), and a variety of private and non-profit aquatic organizations such as the National Spa and Pool ...

  4. Virginia Graeme Baker Pool and Spa Safety Act - Wikipedia

    en.wikipedia.org/wiki/Virginia_Graeme_Baker_Pool...

    Sec. 1404: Top Priority for Public Pool And Spa Owners/Operators All pool/spa drain covers manufactured, distributed or entered into commerce on or after December 19, 2008, must meet ASME/ANSI A112.19.8– 2007. All public pools and spas must be retrofitted with covers that meet the ASME/ANSI A112.19.8– 2007 standard.

  5. Top 7 home renovations that can increase your property's ...

    www.aol.com/finance/best-home-renovations...

    Credit cards. For smaller, lower-cost renovation projects, a balance transfer credit card can be a convenient financing option. These low-fee cards are designed to help you pay off high-interest ...

  6. Mercury switch - Wikipedia

    en.wikipedia.org/wiki/Mercury_switch

    A mercury switch is an electrical switch that opens and closes a circuit when a small amount of the liquid metal mercury connects metal electrodes to close the circuit. There are several different basic designs (tilt, displacement, radial, etc.) but they all share the common design strength of non-eroding switch contacts.

  7. Trump Cabinet picks soften past statements under Senate ... - AOL

    www.aol.com/trump-cabinet-picks-soften-past...

    Some of President-elect Donald Trump’s most vulnerable Cabinet picks are racing to smooth out or overwrite past statements before contentious Senate confirmation fights.

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