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  2. Butterfly valve - Wikipedia

    en.wikipedia.org/wiki/Butterfly_valve

    The butterfly valve has been in use since the late 18th century. James Watt used a butterfly valve in his steam engine prototypes. With advances in material manufacturing and technology, butterfly valves could be made smaller and withstand more-extreme temperatures.

  3. 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 ...

  4. Piping and plumbing fitting - Wikipedia

    en.wikipedia.org/wiki/Piping_and_plumbing_fitting

    Valves are available in several types, based on design and purpose: Gate, plug, or ball valves – Isolation; Globe valve – Throttling; Needle valve – Throttling, usually with high precision but low flow; Butterfly or diaphragm valves – Isolation and throttling; Check valve – Preventing reverse flow (non-return)

  5. Diaphragm valve - Wikipedia

    en.wikipedia.org/wiki/Diaphragm_valve

    Diaphragm valves (or membrane valves) consists of a valve body with two or more ports, a flexible diaphragm, and a "weir or saddle" or seat upon which the diaphragm closes the valve. The valve body may be constructed from plastic , metal or other materials depending on the intended use.

  6. List of Honda engines - Wikipedia

    en.wikipedia.org/wiki/List_of_Honda_engines

    Valve Train OHV Cam-in-block; four-valve-per-cylinder; Carburetion Twin Keihin 40.0 mm butterfly with manual choke; Ignition Triple-wound stator, low speed, high speed, and charging, transistor ignition; Starter Electric only; Honda CB500. Engine Type 499cc liquid-cooled two-cylinder "Parallel-twin" four-stroke; Bore & Stroke 73 mm × 59.5 mm

  7. Ballcock - Wikipedia

    en.wikipedia.org/wiki/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 ...