Jual Orifice flange
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Product Description
Orifice Flanges or ORF are used with orifice flow meter that is why it called orifice flanges. The purpose of orifice meter is to measure the flow rate of either liquids or gasses that pass through the pipe. These flanges are always used in a set of two. Two flanges, Orifice Plate, Gaskets, Pressure taps and Jack screw hole with two jack screws.
Orifice flanges are available from Class #300 to Class #2500. Class #300 flanges are available in threaded, slip-on and weld neck end types. Whereas, Class# 600 and above flanges are available in only weld neck type end connection. Dimensions of these flanges are covered in ASME B16.36. Orifice plate is a specially designed plate with a hole at center that creates a pressure drop to measure the flow rate. Please note that orifice plate is not interchangeable. It means you cannot use orifice plate of water line into the hydrocarbon line. Size of the hole and the angle, are specifically designed for the service.
There are only two types of flange faces are available in orifice flange. Raised face and RTJ face. Therefore, only spiral wound and RTJ gaskets are used that too in the set of two for each side of the orifice. These jack screws are drilled on the flange circle centerline at 90 degrees to the tapped hole and used to facilitate separating the flanges for inspection or replacement of the Orifice Plate and gaskets.
Tap holes are either tapped NPT or NPS socket connection. A one tap hole from each flange is used to connect instruments with the help of tube that allows liquid or gas to reach the instrument. The other one hole is sealed with a plug. Orifice flanges are installed in a straight run of pipe in order to avoid turbulence at the plate. As a rule of thumb, an orifice flange has ten diameters of straight pipe upstream and five diameters of straight pipe downstream. In general pressure taps kept at the same elevation to each other.
Standard: ANSI B16.5
Pressure: CLASS 150, 300, 600, 900, 1500, 2500
Size: 1/2-48
Standard: AMSE B16.47 SER.B(API605)
Pressure: CLASS 75,150,300,600,900
Size: 26-60
Standard: AMSE B16.47
Pressure: CLASS 150,300,600,900
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