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2. Watts Water Technologies - Wikipedia

   en.wikipedia.org/wiki/Watts_Water_Technologies

   Watts was previously based in Lawrence, MA. [3] [4] Watts created a type of safety valve known as the temperature and pressure valve (T&P valve), which was used for safely venting hot-water supply tank systems, reducing the risk of explosion. [5] By the time of World War II, the U.S. Army required Watts T&P valves on all army hot-water supply ...

3. Duplex strainers - Wikipedia

   en.wikipedia.org/wiki/Duplex_strainers

   Duplex strainer [1] or twin basket strainer is a type of filter built into a fuel, oil or water piping system and it is used to remove large particles of dirt and debris. The duplex features a design that makes strainer basket servicing a no-hassle operation. The duplex strainer system usually consists of two separate strainer baskets housings.

4. Plumbing fixture - Wikipedia

   en.wikipedia.org/wiki/Plumbing_fixture

   The most common plumbing fixtures are: Bathtubs; Bidets; Channel drains; Drinking fountains; Showers; Sinks; Tap (connections for water hoses) . Tapware - an industry term for that sub-category of plumbing fixtures consisting of tap valves, also called water taps (British English) or faucets (American English), and their accessories, such as water spouts and shower heads.

5. Sieve - Wikipedia

   en.wikipedia.org/wiki/Sieve

   Metal laboratory sieves An ami shakushi, a Japanese ladle or scoop that may be used to remove small drops of batter during the frying of tempura ancient sieve. A sieve (/ ˈ s ɪ v /), fine mesh strainer, or sift is a tool used for separating wanted elements from unwanted material or for controlling the particle size distribution of a sample, using a screen such as a woven mesh or net or ...

6. Glossary of firefighting equipment - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_firefighting...

   Type of control valve for sprinkler systems that is mounted to an outside wall and indicates "open" or "shut" in an indicator window on the valve body. Water curtain nozzle A nozzle designed to throw a fan of water droplets to form a "curtain" in an attempt to reduce the risk of radiated heat igniting a nearby exposure. Also known as Water Wall.

7. Mathematics of three-phase electric power - Wikipedia

   en.wikipedia.org/wiki/Mathematics_of_three-phase...

   A three-phase system may be arranged in delta (∆) or star (Y) (also denoted as wye in some areas, as symbolically it is similar to the letter 'Y'). A wye system allows the use of two different voltages from all three phases , such as a 230/400 V system which provides 230 V between the neutral (centre hub) and any one of the phases, and 400 V ...