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  2. Orifice plate - Wikipedia

    en.wikipedia.org/wiki/Orifice_plate

    Orifice plate showing vena contracta. An orifice plate is a thin plate with a hole in it, which is usually placed in a pipe. When a fluid (whether liquid or gaseous) passes through the orifice, its pressure builds up slightly upstream of the orifice [1] but as the fluid is forced to converge to pass through the hole, the velocity increases and the fluid pressure decreases.

  3. Flow conditioning - Wikipedia

    en.wikipedia.org/wiki/Flow_conditioning

    The final installation option for orifice metering is perforated plate flow conditioners. There is a variety of perforated plates have entered the market. These devices generally are designed to rectify the drawbacks of the conventional tube bundle ( accuracy and repeatability insufficiency).

  4. Restrictive flow orifice - Wikipedia

    en.wikipedia.org/wiki/Restrictive_flow_orifice

    A restrictive flow orifice (RFO) is a type of orifice plate.They are used to limit the potential danger, damage, or wastage of an uncontrolled flow from, for example, a compressed gas cylinder [1] [2] They are generally not limiting the flow during normal operation but if a fault or failure occurs causing uncontrolled flow the orifice will present a restriction, limiting the flow.

  5. Air flow bench - Wikipedia

    en.wikipedia.org/wiki/Air_flow_bench

    An orifice with a flow coefficient of 0.59 would flow the same amount of fluid as a perfect orifice with 59% of its area or 59% of the flow of a perfect orifice with the same area (orifice plates of the type shown would have a coefficient of between 0.58 and 0.62 depending on the precise details of construction and the surrounding installation ...

  6. Piping and plumbing fitting - Wikipedia

    en.wikipedia.org/wiki/Piping_and_plumbing_fitting

    Various types of flanges are available, depending on construction. Flanges used in piping (orifice, threaded, slip-on, blind, weld neck, socket weld, lap-joint, and reducing) are available with a variety of facings, such as raised, flat, and ring-joint. Flange connections tend to be expensive because they require the precision forming of metal.

  7. Flow limiter - Wikipedia

    en.wikipedia.org/wiki/Flow_limiter

    A flow limiter or flow restrictor is a device to restrict the flow of a fluid, in general a gas or a liquid. [1] Some designs use single stage or multi-stage orifice plates to handle high and low flow rates.

  8. Flow measurement - Wikipedia

    en.wikipedia.org/wiki/Flow_measurement

    An orifice plate is a plate with a hole through it, placed perpendicular to the flow; it constricts the flow, and measuring the pressure differential across the constriction gives the flow rate. It is basically a crude form of Venturi meter, but with higher energy losses. There are three type of orifice: concentric, eccentric, and segmental. [7 ...

  9. Vena contracta - Wikipedia

    en.wikipedia.org/wiki/Vena_contracta

    The coefficient of contraction is defined as the ratio between the area of the jet at the vena contracta and the area of the orifice. C c = Area at vena contracta/Area of orifice. The typical value may be taken as 0.611 for a sharp orifice (concentric with the flow channel). [2] [3] The smaller the value, the greater the effect the vena ...