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  2. Water heat recycling - Wikipedia

    en.wikipedia.org/wiki/Water_heat_recycling

    Installation of a double-walled copper-on-copper heat exchanger in a vertical section of the master drain line in a Canadian home (2007) Water heat recycling (also known as drain water heat recovery, waste water heat recovery, greywater heat recovery, [citation needed] or sometimes shower water heat recovery [citation needed]) is the use of a heat exchanger to recover energy and reuse heat ...

  3. Automatic bleeding valve - Wikipedia

    en.wikipedia.org/wiki/Automatic_bleeding_valve

    The top has a small outlet, usually hidden beneath a plastic dust cap. Internally there is a large hollow body, normally filled with water, and containing a float valve. The valve must always be installed vertically, usually at the top of a short vertical pipe. If the valve body is filled with water, the float moves upwards and closes the valve.

  4. Galvanic corrosion - Wikipedia

    en.wikipedia.org/wiki/Galvanic_corrosion

    Ensure there is no contact with an electrolyte. This can be done by using water-repellent compounds such as greases, or by coating the metals with an impermeable protective layer, such as a suitable paint, varnish, or plastic. If it is not possible to coat both, the coating should be applied to the more noble, the material with higher potential.

  5. So You Inherited Grandma's Cast-Iron Skillet—Now What? - AOL

    www.aol.com/inherited-grandmas-cast-iron-skillet...

    For hard-to-remove spots, make a paste of water and baking soda, and use a stiff brush or steel wool—the firmer the better when it comes to removing rust, which is why Lodge also makes a "rust ...

  6. The 7 Biggest Renovation Regrets, According to the Experts ...

    www.aol.com/7-biggest-renovation-regrets...

    Design professionals have hear about their fair share of renovation regrets, so we asked contractors and interior designers to tell us about some of the most common design issues they’re called ...

  7. Corrosion inhibitor - Wikipedia

    en.wikipedia.org/wiki/Corrosion_inhibitor

    A corrosion inhibitor or anti-corrosive is a chemical compound added to a liquid or gas to decrease the corrosion rate of a metal that comes into contact with the fluid. [1] The effectiveness of a corrosion inhibitor depends on fluid composition and dynamics.

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