If the size of the spray particle for example, — microns is doubled and the application volume stays the same, you have only one-eighth as many spray droplets Figure 1. Most companies identify their flat-fan nozzles with a four or five digit number Figure 2. The first numbers are the spray angle and the other numbers signify the discharge rate at rated pressure. For example, an has an 80 degree spray angle and will apply 0. Hollow-cone nozzles Figure 2F generally are used to apply insecticides or fungicides to field crops when foliage penetration and complete coverage of the leaf surface is required.
These nozzles operate in a pressure range from 40 to psi. To double the flow rate, the pressure must be increased 4 times. These nozzles are used for postemergence contact herbicides where a finely atomized spray is used for complete coverage of plants or weeds. Below, check out our top tips for choosing the best hose nozzle and learn why the below rank at the top of our recommendation list. Begin typing your search term above and press enter to search.
Press ESC to cancel. Skip to content Home Physics What is the purpose of orifice? Ben Davis November 15, What is the purpose of orifice? They give an acceptable level of uncertainties at lowest cost and long life without regular maintenance.
Concentric Bore — The most common orifice plate is the square-edged, concentric bored design. It is usually made of stainless steel. Other materials like nickel and Monel are used for a good corrosive resistant property.
This type of orifice plate has a very high accuracy. Eccentric Bore — Eccentric bore orifice plates are plates with the orifice off-center, or eccentric, as opposed to concentric. Location of the bore prevents accumulation of solid materials or foreign particles and makes it useful for measuring fluids containing suspended solid particles.
Eccentric bore orifice plates are more uncertain as compared to the concentric orifice. Segmental Bore — The segmentally bored orifice plates contain a hole that is a segment of a concentric circle.
Like the eccentric orifice plate design, the segmental hole should be offset downward in gas flow applications. Construction of an Orifice Meter It is typically made of carbon steel, and the main components of the device are: Inlet Section — a linear segment extending from the device and acts as an end connection for the fluid flowing inside. Outlet Section — also a linear segment similar to the inlet section where the pressure of the gas or fluid discharged is determined.
Orifice Plate — present between the outlet and inlet segments and used to generate a pressure drop which enables the measurement of the flow rate. Flow Conditioner — installed in the inlet section of the meter tube and is used to enhance linear flow in the inlet section of the meter tube. The liquid or gas whose flow rate is to be determined is passed through the orifice plate. This creates a pressure drop across the orifice plate which varies with the flow rate, resulting in a differential pressure between the outlet and inlet segments.
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