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  2. Ball valve - Wikipedia

    en.wikipedia.org/wiki/Ball_valve

    The maximum working pressure of high-pressure ball valves can be up to 15,000 psi (1,000 bar). High-pressure ball valves are often used in hydraulic systems, so they are also known as hydraulic ball valves. Ball valves in sizes up to 2 inches (51 mm) generally come in a single piece, two or three-piece designs.

  3. Hydrogen valve - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_valve

    High pressure ball valves up to 6000 psig (413 bar) at 250 degrees F (121 degrees C) and flow coefficients from 4.0 to 13.8. [1] Material. Valves used in industrial ...

  4. List of valves - Wikipedia

    en.wikipedia.org/wiki/List_of_valves

    The inside of an extremely large butterfly valve Duplex ball valve Three check valves in corrosion-resistant Hastelloy Stainless steel gate valve. Valves can be categorized into the following types, based on their operating mechanism: Ball valve, for on–off control without pressure drop. Ideal for quick shut-off, since a 90° turn completely ...

  5. Valve - Wikipedia

    en.wikipedia.org/wiki/Valve

    A valve ball is also used for severe duty, high-pressure, high-tolerance applications. They are typically made of stainless steel, titanium, Stellite, Hastelloy, brass, or nickel. They can also be made of different types of plastic, such as ABS, PVC, PP or PVDF.

  6. Check valve - Wikipedia

    en.wikipedia.org/wiki/Check_valve

    High-performance liquid chromatography pumps and similar high pressure applications commonly use small inlet and outlet ball check valves with balls of (artificial) ruby and seats made of sapphire [6] or both ball and seat of ruby, [7] for both hardness and chemical resistance. After prolonged use, such check valves can eventually wear out or ...

  7. 8 Common Cardiovascular Diseases for Men & How to Prevent Them

    www.aol.com/8-common-cardiovascular-diseases-men...

    High blood pressure (Learn more about How to Lower Blood Pressure.) High cholesterol. Heart disease. Diabetes. Obesity. ... Heart valve problems may be treated with medications or surgery.

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