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  2. Mechanism of diving regulators - Wikipedia

    en.wikipedia.org/wiki/Mechanism_of_diving_regulators

    A 1964 scuba cylinder valve with reserve, commonly known as a "type J" valve. The inlet is threaded 3/4"-14 NPSM and the outlet is a standard CGA 850 yoke type. The first-stage of the scuba regulator may be connected to the cylinder valve by one of two standard types of fittings.

  3. Toyota NR engine - Wikipedia

    en.wikipedia.org/wiki/Toyota_NR_engine

    The valve mechanism is equipped with 4-Valves per cylinder, DOHC, and implemented Toyota's Dual VVT-i and VVT-iW. It also uses multi-point or direct fuel injection . The 1NR, 2NR, 3NR, 4NR, 5NR, 6NR, and 7NR engines have Dual VVT-i standard and the 8NR engine has VVT-iW , enabling it to operate in the Otto cycle as well as a modified- Atkinson ...

  4. List of valves - Wikipedia

    en.wikipedia.org/wiki/List_of_valves

    Diaphragm valve or membrane valve, controls flow by movement of a diaphragm. Used in pharmaceutical applications; Gate valve, mainly for on–off control, with low pressure drop; Globe valve, good for regulating flow. Uses a cylinder movement over a seat; Knife valve, similar to a gate valve, but usually more compact. Often used for slurries or ...

  5. Toyota GR engine - Wikipedia

    en.wikipedia.org/wiki/Toyota_GR_engine

    The Toyota GR engine family is a gasoline, open-deck, piston V6 engine series. The GR series has a 60° die-cast aluminium block and aluminium DOHC cylinder heads.This engine series also features 4 valves per cylinder, forged steel connecting rods and crankshaft, one-piece cast camshafts, a timing chain, [1] and a cast aluminium lower intake manifold.

  6. Multi-valve - Wikipedia

    en.wikipedia.org/wiki/Multi-valve

    A cylinder head of a four valve Nissan VQ engine engine. A multi-valve or multivalve engine is one where each cylinder has more than two valves (an intake, and an exhaust).A multi-valve engine has better breathing, and with more smaller valves (having less mass in motion) may be able to operate at higher revolutions per minute (RPM) than a two-valve engine, delivering more power.

  7. Cylinder valve - Wikipedia

    en.wikipedia.org/wiki/Cylinder_valve

    an inlet or exhaust valve in a piston engine or compressor; a direct coupled valve to control the flow of gas into or out of a gas storage cylinder. a scuba cylinder valve to control the flow of gas into or out of the diving cylinders of a scuba set; a valve to control flow of the actuating fluid into or out of a hydraulic or pneumatic cylinder

  8. Scuba cylinder valve - Wikipedia

    en.wikipedia.org/wiki/Scuba_cylinder_valve

    A rubber O-ring forms a seal between the metal of the cylinder valve and the metal of the diving regulator. Fluoroelastomer (e.g. viton) O-rings may be used with cylinders filled with oxygen-rich breathing gas mixtures to reduce the risk of fire. [18] There are two basic types of cylinder valve to regulator connection in general use for scuba ...

  9. Poppet valve - Wikipedia

    en.wikipedia.org/wiki/Poppet_valve

    Although this provides better heat transfer, it requires steel valve seat inserts to be used; in older cast iron cylinder heads, the valve seats are often part of the cylinder head. A gap of 0.4–0.6 mm (0.016–0.024 in) is present around the valve stem, therefore a valve stem oil seal is used to prevent oil being drawn into the intake ...

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