What is the purpose of orifice flange union?
The orifice flange union is used to measure, or meter, the amount of pressure drop through the orifice plate. The length of pipe within the piping system where orifice flanges are installed and where these measurements are recorded is known as a meter run.
What are the different types of orifice?
Types of Orifice Plates
- Concentric Orifice Plate (Hole is in the center)
- Eccentric Orifice Plate (Hole is off center)
- Segmental Orifice Plate.
- Others – such as Conical and Quadrant, and Edged Entrance types.
What is a flange union?
[′flanj ‚yün·yən] (engineering) A pair of flanges that are screwed to the ends of pipes and then bolted or welded together to hold two pipes together.
What is an orifice union?
Orifice flange unions, commonly referred to as orifice unions, are simply a pair of orifice flanges used for holding an orifice plate in a line. Orifice plates are used for measuring the flow rate of fluids. They hold the orifice plate securely in line, so that the plate can provide accuracy in measurement.
Why orifice is used in pipeline?
Orifice plates are most commonly used to measure flow rates in pipes, when the fluid is single-phase (rather than being a mixture of gases and liquids, or of liquids and solids) and well-mixed, the flow is continuous rather than pulsating, the fluid occupies the entire pipe (precluding silt or trapped gas), the flow …
Where are orifice meters used?
The orifice plate flow meter is commonly used in clean liquid, gas, and steam services. It is available for all pipe sizes but it is very cost-effective for measuring flows in larger ones (over 6″ diameter). The orifice plate is also approved by many organizations for custody transfer of liquids and gases.
What is orifice size?
The orifice size of the nozzle determines the operating pressure of your machine. As a rule of thumb, the smaller the orifice, the greater the restriction of water flowing through the machine. Choosing a nozzle with too small of an orifice will limit water flow and possibly create an excessive load on the machine.
What is the disadvantage of orifice plate?
Disadvantages of orifice meter: It requires the flow of axial velocity vectors. It causes a pressure drop in the fluid. Its accuracy is affected by the density, pressure and viscosity of the fluid. The range of measurement of viscosity limits of fluids.
What is a ground joint union?
Unions for joining steel, iron or copper pipes that incorporate a malleable ring of copper or brass at the joint, ground to form a hermetic seal when the union is tightened, are called ground joint unions. The precisely ground ring makes a more reliable and tighter seal than a rubber or plastic washer.
How does orifice reduce pressure?
When a fluid (whether liquid or gaseous) passes through the orifice, its pressure builds up slightly upstream of the orifice but as the fluid is forced to converge to pass through the hole, the velocity increases and the fluid pressure decreases.
How does the orifice of a restriction union work?
Within a restriction union is a replaceable orifice metering plate made from stainless steel. The plate slows down the flow of the process fluid, resulting in a drop in pressure from upstream to downstream.
What kind of steel does threaded orifice Union use?
Threaded Orifice Union ISO 9001 & PED Certified Canadian Registered in all provinces Material: Available in a complete range of Carbon Steels, Stainless Steels, Alloy Steels and Non -ferrous metals certified to ASTM, ASME, and Military standards.
How big is an orifice Union hole in inches?
PENNSYLVANIA MACHINE WORKS • 1-800-PENN-USA • WWW.PENNUSA.COM All dimensions are in inches • Weights are based on Carbon Steel Length of thread screwed into fitting Active Model 3D See our flow rate chart for orifice union hole sizes: http://www.pennusa.com/products/orifice_union_hole_flow_rate_chart.php
What makes a Daniel orifice flange Union reliable?
Rigorous manufacturing procedures, including correct alignment of the flange bore and plate centering, ensure every Daniel flange union meets strict AGA tolerances for reliable, long term measurement performance.
