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2. Ball valve - Wikipedia

   en.wikipedia.org/wiki/Ball_valve

   A ball valve is a flow control device which uses a hollow, perforated, and pivoting ball to control fluid flowing through it. It is open when the hole through the middle of the ball is in line with the flow inlet, and closed when it is pivoted 90 degrees by the valve handle, blocking the flow. [1] The handle lies flat in alignment with the flow ...

3. Molten Corporation - Wikipedia

   en.wikipedia.org/wiki/Molten_Corporation

   Molten Corporation (株式会社モルテン, Kabushiki-gaisha Moruten) is a sports equipment and automotive parts company based in Hiroshima, Japan.. Molten is mostly known for manufacturing balls for several team sports, with a range of products that includes American footballs, association footballs, basketballs, dodgeballs, handballs and volleyballs.

4. Ballcock - Wikipedia

   en.wikipedia.org/wiki/Ballcock

   Ballcock. A ballcock (also balltap or float valve) is a mechanism or machine for filling water tanks, such as those found in flush toilets, while avoiding overflow and (in the event of low water pressure) backflow. The modern ballcock was invented by José Antonio de Alzate y Ramírez, a Mexican priest and scientist, who described the device in ...

5. Artificial heart valve - Wikipedia

   en.wikipedia.org/wiki/Artificial_heart_valve

   Caged ball valve. The first artificial heart valve was the caged ball valve, a type of ball check valve, in which a ball is housed inside a cage. When the heart contracts and the blood pressure in the chamber of the heart exceeds the pressure on the outside of the chamber, the ball is pushed against the cage and allows blood to flow.

6. Mikasa Sports - Wikipedia

   en.wikipedia.org/wiki/Mikasa_Sports

   Mikasa Corporation (株式会社 ミカサ, Kabushiki Kaisha Mikasa) is a Japanese sports equipment and athletic goods company with its international corporate headquarters located in Nishi-ku, Hiroshima, Chūgoku. [2][3] Specializing in equipment for ball games, the balls manufactured by Mikasa for sports football, Korfball, basketball ...

7. Butterfly valve - Wikipedia

   en.wikipedia.org/wiki/Butterfly_valve

   A butterfly valve is from a family of valves called quarter-turn valves. In operation, the valve is fully open or closed when the disc is rotated a quarter turn. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. When the valve is fully open, the disc ...