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  2. B16 Standardization of Valves, Flanges, Fittings, and Gaskets

    en.wikipedia.org/wiki/B16_Standardization_of...

    The ASME B16 Standardization of Valves Flanges, Fittings and Gaskets Committee, which operates under ASME ’s Board on Pressure Technology Codes and Standards is responsible for standards covering valves, flanges, pipe fittings, gaskets and valve actuators for use in pressure services. The B16 Standards Committee currently meets once a year in ...

  3. 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 ...

  4. Check valve - Wikipedia

    en.wikipedia.org/wiki/Check_valve

    A swing check valve (or tilting disc check valve) is a check valve in which the disc, the movable part to block the flow, swings on a hinge or trunnion, either onto the seat to block reverse flow or off the seat to allow forward flow. The seat opening cross-section may be perpendicular to the centerline between the two ports or at an angle.

  5. Waveguide flange - Wikipedia

    en.wikipedia.org/wiki/Waveguide_flange

    A waveguide flange is a connector for joining sections of waveguide, and is essentially the same as a pipe flange —a waveguide, in the context of this article, being a hollow metal conduit for microwave energy. The connecting face of the flange is either square, circular or (particularly for large [ 1] or reduced-height rectangular waveguides ...

  6. List of EN standards - Wikipedia

    en.wikipedia.org/wiki/List_of_EN_standards

    EN 1: Flued oil stoves with vaporizing burners. EN 2: Classification of fires. EN 3: Portable fire extinguishers. EN 14: Dimensions of bed blankets. EN 19: Industrial valves – Marking of metallic valves. EN 20: Wood preservatives. EN 26: Gas-fired instantaneous water heaters for the production of domestic hot water.

  7. Wafer (electronics) - Wikipedia

    en.wikipedia.org/wiki/Wafer_(electronics)

    The size of wafers for photovoltaics is 100–200 mm square and the thickness is 100–500 μm. [10] Electronics use wafer sizes from 100 to 450 mm diameter. The largest wafers made have a diameter of 450 mm, [11] but are not yet in general use.

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